Button dripper irrigation for avocados in Kenya.

Avocado farming for export has expanded recently in Kenya. By using button dripper irrigation for avocados in Kenya, farmers are assured of a 30% increase in the yield. A variety of avocado trees are grown in Kenya, including

Hass.
Fuerte.
Nabal.
Hayes.
Tonnage.
Ethinger.
Keitt.
Reed.
Puebla avocados.

Water used in Avocado trees in Kenya

Avocados are water-sensitive plants that require the right amount of water to develop properly. When supplied with too much water, avocados tend to develop root rots, and when given too little water, there is reduced yield or even death. Root rots cause the roots to decay and die, eventually causing the whole tree to die off. 25 mm to 30 mm of water per week is recommended for the best yield on an avocado farm. However, these figures vary greatly depending on:

The farm’s soil type – sandy soils will require more water for irrigation than clay or loamy soils.
Size of the trees – large trees need more water than small trees.
Growth stage – flowering avocado trees will need more water than those that are not.
Slope of an area – water application should be done more carefully to avoid erosion if the slope is steep.
The climate of an area – area with hot climates will need more water for avocados compared to areas with cool climates.

Many benefits arise when irrigating avocado trees; some of these benefits are:

There is an increased yield
The avocado trees mature faster, and fruit production is consistent
There is reduced water stress on the trees
The rate of flower and fruits dropping is reduced.

Using button dripper irrigation for avocados in Kenya.

Avocado trees’ roots tend to grow more horizontally than vertically. The root ends usually are located at the edge of the canopy. For an efficient irrigation system for avocados, the system must be able to properly distribute water at the right location and in the right amounts. There are a variety of irrigation methods used in avocado farms. These irrigation methods include button dripper irrigation systems, pressure compensated driplines, and micro-sprinklers.

Button dripper irrigation for avocados in Kenya.

The use of button dripper irrigation for avocados in Kenya has proven to be an effective way of supplying water, especially in the first year of the avocados. In the first year, the avocados do not have a widespread root system, and that ensures the effective use of button drippers. Drip tapes can not be used to supply water to avocado trees due to their low flow rates. Drip tapes have flow rates of about 2 liters per hour, whereas button drippers have flow rates of between 1 liter per hour to 60 liters per hour.

The operating pressures of button drippers range from 15 to 25 PSI depending on the flow rate. Button drippers come in thicknesses ranging from 1mm to 1.3 mm. Thick button drippers are used in more permanent sub-surface irrigation systems, whereas 1 mm button drippers are used in temporary systems. Button drippers come in two types; these are:

Adjustable button drippers – these types of button drippers come with a threaded crown that adjusts the amount of water flowing.
Non-adjustable button drippers – non-adjustable button drippers lack threads hence only supply water at a fixed rate.

Button drippers make use of a swirling flow path which causes turbulent flow. The main advantage of this type of flow is reduced clogging of the button drippers. When it comes to laying down button dripper irrigation for avocados in Kenya, the number of trees determines the number of button drippers needed. The farmer determines button dripper systems spacing, unlike drip lines with fixed emitter spacing.

Advantages of button dripper irrigation for avocados in Kenya

The benefits of using button dripper irrigation for avocados in Kenya are:

Irrigation system is applicable in all landscapes.
Water distributed at the root zone reduces water losses.
High efficiency in fertilizer application due to fertigation.
This system uses low energy since the water flow is by gravity.
Reduce clogging of the button emitters due to turbulent flow.
It reduced growth of weeds.
The button drippers are resistant to ultraviolet rays, chemicals, and fertilizer.

Pressure compensated driplines

Pressure compensated driplines are driplines equipped with a regulating mechanism that controls the flow out of the drip emitters. This means that even if the pressure in the drip system increases, water flow does not change. It is a suitable method to ensure equal water distribution throughout the farm, ensuring equal growth. These drip lines are also useful for irrigation on steep slopes since the water flow is constant. In irrigating avocado trees in Kenya, this system is beneficial when the trees have more than one year and large canopies.

In avocados, the root tips are located at the edge of the canopy. The use of pressure compensated driplines ensures an equal supply of water to the roots zone of the avocado trees. The pressure-compensated dripline is rolled around the tree with a circumference equal to the canopy. The number of rolls depends on the plant’s water requirements, soil type, topography, and climate of the area. By doing so, equal volumes of water are distributed to the avocado root zones.

Micro-sprinklers

Micro-sprinklers serves as water and fertilizer supplier in avocados. Due to ease in repair and maintenance, laterals on the surface are more preferred than buried laterals. Micro-sprinklers apply water to the plants’ root zone, helping inefficient water use. Where sprinklers are arranged at equal distances between the avocado trees. Such that each sprinkler distributes water to one side of two trees. Micro-sprinklers distribute water at a range of 15 liters per hour to 75 liters per hour. Most farmers start with small sprinklers when the trees are young and are switched out for larger sprinklers when the trees are large. The choice of micro-sprinkler chosen depends on the desired water pattern, water flow, water pressures, and the spacing between trees.

The types of micro-sprinklers available are:

Short radius micro-sprinklers – Come in ten sizes, with flows ranging from 26 liters per hour to 300 liters per hour.
Long radius micro-sprinklers – these types of micro-sprinklers are used to irrigate trees that have extensive root volumes. They also come in ten sizes, with flows ranging from 26 liters per hour to 300 liters per hour.
Jet micro-sprinklers – They come in five sizes, with flows ranging from 37 liters per hour to 113 liters per hour.
Pressure compensated micro-sprinklers – these micro-sprinklers have a mechanism that helps them regulate water flow out of the nozzle. This ensures equal distribution of water to the trees.
Non-pressure compensated sprinklers – these micro-sprinklers lack a pressure regulating system and can distribute water over a large diameter. They have a high-water distribution uniformity.

Avocado farming methods and practices

Avocados grow in various soils, be it acidic or alkaline soils. They do well in the warm region and can withstand low temperatures of up to – 60 C. Avocado farming methods and practices help ensure high yields and proper care for the avocado trees. Button dripper irrigation for avocados in Kenya has helped in most of these practices, making it more appropriate. Some of these farming methods and practices are:

Management of button dripper irrigation for avocados in Kenya.

It is vital to ensure efficient management of water released to the avocado farms. Avocadoes are sensitive to the amount of water they receive; hence, there is a need to manage irrigation water.

Management practices for button dripper irrigation:-

Carrying out avocado cultural management practices like pruning to avoid water wastage.
Removal of weeds which tend to compete with the avocadoes for water.
Application of mulch, which helps preserve soil moisture.
By reducing the amount of water used when irrigating on slopes. This reduces the amount of water wasted as runoff
Cutting supply of water to sick or damaged trees. This ensures there is no wastage of water by providing to unnecessary plants.
By stumping canopied trees. Water loss in plants is mainly through transpiration. Transpiration is the movement of water from the roots through the trees and to the atmosphere. By stumping out canopied trees, we reduce water loss on the farm
Thinning out crowded groves. Crowded groves mean more water needed and also lost through evapotranspiration.
By keeping low skirts on avocado trees. By keeping low skirts on avocado trees, there will be ample shade provided on the root base reducing the rate of water loss by evaporation.

Salinity control using button dripper irrigation for avocados in Kenya

Avocados are highly sensitive to salinity. High salinity hinders water absorption through the roots resulting in improper photosynthesis and root growth. Button dripper irrigation for avocados in Kenya help reduce salinity by providing enough water to leach out excess salt.

Fruit drop control in button dripper irrigation for avocados in Kenya

Fruit drop in avocados is when avocado trees drop their fruits to eliminate defective or weak seeds. As much as the plants control this process, reducing the number of fruits dropped is possible. Button dripper irrigation for avocados in Kenya helps control fruit drops. Button drippers ensure an adequate water supply to the trees, reducing water stress on the plants. This decreases fruit drops.

Fertilizer application using button dripper irrigation for avocados in Kenya

Avocados need a constant supply of nutrients throughout their growing period. The nutrients that avocados need mostly are nitrogen, zinc, potassium, and phosphorus. These nutrients are water-soluble. Thus, delivered using irrigation system. Button drippers for irrigation for avocados in Kenya are suitable for an effective supply of water and nutrients to the trees. PH measurements obtained from the soil determines when to apply fertilizer. Another way is by carrying out nutrient analysis on the avocado leaves.

Pruning

Is a process of cutting dead or living branches of a tree/crop to promote growth. Followed by these principles

For example, the avocado plant should:-

Not undergo over-pruning or under pruning.
Keep pruning tools clean.
Prune healthy and sick plats separately.

Pruning principles:-

Remove deadwood from the trees during pruning.
Cut cleanly and in line with the trunk contours.
Design a conical shape to improve on unproductive bare areas and good light interception.
Removed All V-type crotches.
Prune trees growing on slopes to a lesser height than those on flat areas.
Prune horizontal branches growing low to the ground.

Freeze protection

Avocados tend not to do well in low temperatures; hence it is vital to carry out various practices during cold conditions to protect them. Where there are mature groves, it is best to provide either orchard heaters or wind machines to prevent frost damage. If avocado trees lose their leaves due to cold conditions, it is best to apply whitewash to those areas to prevent sunburns. A blanket placed over young trees protects the young trees against cold conditions. Additionally, molding the soil protect Mature trees on the tree trunk.

Grafting

Done by connecting avocado branch onto another rootstock of a different trees. As the two grow, they fuse to form one tree. This method ensures high quantity and quality yields. And, Speed up bearing of fruits. For a high grafting success rate, the two parts should be closely related. The common grafting method used on avocadoes is the cleft grafting method. Cleft graft is used for joining scions to larger pieces of root stalks. Tools used are a knife, mallet, and sealing wax.

The first step is to drive the cleaving tool six inches deep into the rootstock using a mallet. Next, you make a long wedge about six inches at the base of the scion. Insert the scion up to the base of the wedge on the rootstock. Seal the point of union using the wax and then follow up with care.

Market regulations around avocado export.

Kenya is amongst the top avocado producers globally, with an average of 115,000 tons of avocado produced per year. The local varieties dominate the total avocado produced in the country with a 70% share. The Hass and Fuerte varieties dominate about 10% and 20% of the quantities produced in the country. Kenya is the sixth-largest exporter of avocados to Europe, with Peru being the major competitor. About 70% of the total export is from small-scale farmers who export through intermediaries.

Uses of avocadoes

Avocados are rich in proteins, fats, carbohydrates, magnesium, potassium, and vitamins E, C, and K. Aside from consumption purposes, avocados have other important uses. Some of these uses are:

Manufacturing:-

Hair products
Fabric dyes
Face masks
Anti-wrinkle eye treatments
Making soap
Treating sunburns.

Dam liners for sale in Kenya

Why choose to purchase a dam liner for sale in Kenya? In the recent years there has been rapid changes in climate especially in Africa. In the past African farmers would plan when to plant and to harvest and everything would turn out okay because the weather patterns were predictable. But, with the rapid change of environment, farmers tend to seek alternative ways of ensuring the crops can survive during the whole growing period. One of these methods is by use of dam liners and it’s what we will be showing you how?

Dam liners offer waterproofing of dams, ponds, canals, tanks and ditches preventing loss of water to the environment. Dam liners for sale in Kenya come in various thicknesses i.e., 0.3 mm, 0.5 mm, 0.75 mm and 1 mm.

The main factors to consider when choosing the type of dam liner to use are;

The nature of the dam base – a dam base having stony surface will require a thicker dam liner. Whereas a thinner dam liner i.e., 0.3 mm can be used on a base having fine soils
The expected volume of water to be held – a big reservoir will hold a lot of water. In order to support the weight of the water without tearing, a thicker dam liner will be required. A thin dam liner can be used comfortably in small ponds and tanks.
The expected life time of the dam liner – if a farmer desires a dam liner that will last for a long time then a thick dam liner is recommended. Thin dam liners have short life expectations compared to thick dam liners
The available budget – thick dam liners tend to be more costly than thin dam liners due to their high resistance to shear forces. The budget of the client should be a consideration.

Advantages of dam liners for sale in Kenya

Dam liners for sale in Kenya have a number of advantages that place them amongst the top products on the market. These advantages include;

Dam liners are very resistant to shear forces and the strength of each type depends on the thickness of the liner.
HDPE dam liners have a high resistance to ultra-violet rays.
Dam liners are very easy to clean and maintain. In case of damage, they can be easily repaired using a liner patch.
Compared to other methods of lining dams and ponds, using a dam liner is much cheaper
Dam liners are made to be chemical resistant preventing corrosion.
Dam liners are built strong enough to resist plants’ roots from tearing into them.

Use of dam liners in fish farming.

Fish farming is an up coming enterprise which involves raising of fish in tanks or enclosures for human consumption. The growth of aquaculture has resulted in an increase in dam liners for sale in Kenya. Fish production occurs mainly on the top layers of water as a result of that, when it comes to making a fish pond a depth of less than 2 meters is preferred.

Water harvesting for irrigation using dam liners for sale in Kenya

With the increased unreliability of rain water, most farmers have sought other options to get past this hurdle. Irrigation is an efficient way to ensure that the crops are able to receive the right amounts of water in order to grow. For those located where rivers flow only in specific periods or where there are no rivers at all, they have to find other ways of ensuring water supply throughout the whole crop growing season. There are different types of dam liners for sale in Kenya which help in this problem. By building a reservoir and lining it with a dam liner, a farmer can be able to store all the water that he/ she will need for the entire growing period of the crop.

How to size a water pan in relation to irrigation requirements

In order to choose the right dam liner for sale in Kenya it is important to determine the right size of liner that will be needed. The size of the dam liner is promotional to the size of the reservoir to be dug. The size of reservoir should be able to hold enough water to carry the crops through a prolonged drought period without any problems.

Size of the reservoir should also be able to accommodate both the water and sediments. This is because the reservoir built is usually open at the top.

Things considered when designing reservoir

The current and future water requirements of the crops
Water losses through evaporation and seepage
The depth of the ground water – The base of the reservoir should be at least 1 m above the ground water
The volume of irrigation return water after an irrigation event. Irrigation return water refers to water that leaves the field back to the reservoir after water application. This volume varies greatly depending on the irrigation method used.
The hydraulic retention time – It is the time taken for water to stay in a reservoir before it is used for irrigation. A longer hydraulic retention time helps in contaminant removal.
A slope ratio of 3:1 or 4:1 has been recommended for reducing the rate of bank erosion.

Eunidrip irrigation systems as a preferred dam liner supplier.

Why should you choose Eunidrip irrigation systems as your supplier of dam liners for sale in Kenya? At Eunidrip irrigation systems we care for our customers’ needs when it comes to selecting the best dam liners. The available dam liners come in thickness of 0.3 mm, 0.5mm and 1 mm. The standard dam liner we have comes with either a width of 6 m or 8 m and length of up to 100m. When your dam or pond has a width of more than 8 m it will mean two liners must joined together to reach the required width.

Dam liners for sale in Kenya advantages

There are various types of dam liners available in the market. These types include EPDM dam liners, PVC dam liners, HDPE dam liners and LLDPE dam liners. Here at Eunidrip irrigation systems we deal with HDPE dam liners which are more stable, chemical resistant, ultra violet resistant and weather resistant. Amongst the dam liners for sale in Kenya there are those that are made with recycled resin and those made from pure raw materials. Dam liners made from recycled resin get their raw materials from recycled water bottles, medical waste, plastic bags, greenhouse waste polythene etc.

Disadvantages

As much this is helping in controlling pollution by plastic wastes, the dam liners produced have many challenges. Some of these challenges are; they are not stable and they can cause harm to fish when used in fish ponds. Since they easily breakdown, they will release toxic substances to the fish pond. At Eunidrip we deal with HDPE dam liners made from pure raw materials ensuring the customers gets the best out of their money. There are a few ways to check on the quality of dam liners for sale in Kenya. These are:

Smelling the dam liner – liners made from recycled resin have a pungent smell
Checking whether the liner will float or sink when placed on water – a good quality dam liner will float in water where as a poor-quality liner will sink
Visual check – a good quality liner will have a smooth surface.

Environmental impact of collecting water using dam liners for sale in Kenya.

The use of dam liners in water storage has helped my people be able to overcome the problems associated with insufficient rainfall within the country. By using reservoirs lined with dam liners for sale in Kenya, there can be sustainable water use in the country. This is especially useful in areas where rain falls for a short period of time and in large quantities. Dam liner stores reservoirs water which is later for irrigating the farm

By using dam liners for sale in Kenya it has now become possible to practice inland fishing. This has helped remove the previous obstacles associated with inland fish farming. The increase in inland fish farming has resulted in an increase in food in the country. In the case of very large dams lined with liners, the water stored can act as a heat sink helping in controlling the temperature. Dam liners are useful when treating water in sedimentation tanks and oxidation tanks. Dam liners used for wastewater treatment should always be in the perfect condition to avoid leakages.

Water harvesting for irrigation using dam liners for sale in Kenya

With the increased unreliability of rain water, most farmers have sought other options to get past this hurdle. Irrigation is an efficient way to ensure that the crops are able to receive the right amounts of water in order to grow. For the farmers located near permanent water sources, they have a big advantage since they can always be assured of a constant supply of water. For those located where rivers flow only in specific periods or where there are no rivers at all, they have to find other ways of ensuring water supply throughout the whole crop growing season. There are different types of dam liners for sale in Kenya which help in this problem. By building a reservoir and lining it with a dam liner, a farmer can be able to store all the water that he/ she will need for the entire growing period of the crop.

How to size a water pan in relation to irrigation requirements

In order to choose the right dam liner for sale in Kenya it is important to determine the right size of liner that will be needed. The size of the dam liner will be determined by the size of the reservoir to be dug. The size of reservoir should be able to hold enough water to carry the crops through a prolonged drought period without any problems. The size of the reservoir should also be able to accommodate both the water and sediments. This is because the reservoir built is usually open at the top. Wind carrying dirt particles will deposit these particles in the water and also particles due to bank erosion will also be deposited in the reservoir. The consideration that should be taken into account when designing a reservoir are;

The current and future water requirements of the crops
Water losses through evaporation and seepage
The depth of the ground water – normally a depth of more than 3 meters is recommended but that depends on the level of ground water. The base of the reservoir should be at least 1 m above the ground water
The volume of irrigation return water after an irrigation event. Irrigation return water refers to water that leaves the field back to the reservoir after water application. This volume varies greatly depending on the irrigation method used.
The hydraulic retention time – this refers to the time it takes water to stay in a reservoir before being used for irrigation. A longer hydraulic retention time helps in contaminant removal.
A slope of ratio 3:1 or 4:1 is recommended to reduce the rate of bank erosion.

QUALITY IRRIGATION PIPES FOR CROP FARMING.

Quality irrigation Pipes for farming

Quality irrigation pipes for crop farming is a network of pipes used to convey water into the crops from a certain water source. Irrigation pipes are used as part of the conveyance system and distribution system of an irrigation scheme. The conveyance system provides water from the water source to the pump. The distribution system delivers water from the pump to the crops.

There are various types of irrigation pipes in the Kenyan market today.

Polyethylene (PE) pipes.
High-density polyethylene (HDPE) pipes.
Galvanized iron pipes.
Poly-vinyl chloride (PVC) pipes.
Low-density polyethylene (LDPE) pipes
PVC Lay flat hose

Popular Irrigation Pipes in Kenya

Polyethylene (PE) pipes

Polyethylene quality irrigation pipes for crop farming are made using thermoplastic material through extrusion.

Characteristics

Different sizes of pipes can be made.
PE pipes come in various colors, with standard black and blue colors
They are flexible and not easy to break, even in icy conditions.
Their toughness makes them be used on almost any surface.

Polyethylene (P.E) pipes have different rating as follows:-

PN 2.5
PN 16
PE PN 4
PN 6

Details

Polyethylene pipes come in diameters ranging from 12 mm to 1200 mm and are rated in different classes depending on the pressures they can withstand. . The minor PN rating in PE pipes is PN 2.5, while the highest rating is PN 16. This means that a PN 2.5 PE pipe is most suitable for use with less than 2.5 bars of water pressure. A PN 16 PE pipe can be used for water pressures below 16 bars. The available PN classes in PE pipes are; PN 2.5, PN 4, PN 6, PN 10, and PN 16. Small PE pipes come in coils, whereas large PE pipes come in straight lengths.

Galvanized iron pipes

Galvanized iron pipes for irrigation are metallic pipes coated with zinc to avoid rusting and increase the longevity of the pipes. Galvanized pipes can be covered using two processes, i.e., hot dipping galvanizing or electro galvanizing. Pipes coated through the hot dipping process have a thick and uniform layer of zinc. The coat adheres firmly to the pipes, and longevity is assured. Galvanized pipes painted using electro galvanization process lack a smooth layer and have poor corrosion resistance. Although the electro galvanization process is a cheap method, the durability of the pipes is not assured. Nowadays, galvanized pipes in irrigation systems are being done away with. Studies have shown that when the pipes are used for a long time, they begin to rust and corrode on the inside. It is advisable to change the use of galvanized pipes to better quality irrigation pipes for crop farming. Some of the problems associated with rust and corrosion build up in the galvanized pipes are;

cons

Low water pressure – Due to the build-up of rust in the pipes, the frictional head loss will be significantly increased in the pipes. This will cause most systems to fail or work poorly.
Uneven distribution of water – corrosion in the galvanized pipes will build up differently in various parts of the pipes. This uneven build-up will result in uneven distribution of water due to different resistances in the system.
Blockage of sprinkler nozzles and drip emitters – Drip emitters and sprinkler nozzles are very sensitive to particles in the water. Although the filter will filter out soil particles and other materials, the rust inside the pipes will be carried by the water to the drip emitters or sprinkler nozzles.
Leaks – continued corrosion in the galvanized pipes will result in leakages. Leakages reduce the water pressure in the irrigation system, reducing efficiency.

PROS

Durable.
Can be used in large project to convey water.
High pressure resistance.

Polyvinyl chloride pipes (PVC)

PVC pipes are quality irrigation pipes for crop farming made out of polyvinyl chloride. They are light and resistant to corrosion. Most PVC pipes come in either black, white, or grey color and lengths of 6 m. PVC pipes come in various diameters, ranging from 16 mm to 110 mm. They are also grouped according to their pressure classes, like in the PE pipes. The lowest pressure class in PVC pipes is PN 4, and the highest-pressure class available at Eunidrip irrigation systems is PN 20. PVC pipes are not suitable to be used above the surface. This is because PVC pipes are affected by sunlight and become brittle. The best way to counter this problem is by burying the pipes or if they are needed above the surface, then using foam pipe insulation or latex paint is recommended. 3 to 4 coats of latex paint are recommended to protect the PVC pipes against sunlight. Another reason to bury the PVC pipes is to protect them against mechanical damage on the surface.

What are the advantages of using PVC quality irrigation pipes for crop farming?

They are light, making them easy to transport and install
They have corrosion resistance
The inside of PVC pipes is made to be smooth, reducing pressure losses in the system
PVC pipes can be recycled, helping in protecting the environment
There are no leakages in the pipes when sealed properly
They are tougher than PE pipes when it comes to the stress by flowing water.

Various fittings are bought with PVC pipes to assist in laying the irrigation pipes on the farm. These fittings include; PVC elbows, PVC tees, PVC sockets, PVC end caps, PVC bushes, PVC reducing sockets and reducing sockets and bushes, etc.

Low-density polyethylene pipes

LDPE pipes are transparent, flexible, non-toxic, quality irrigation pipes for crop farming. They are corrosion, heat, and chemical resistant. Compared to PVC pipes, they don’t have excellent resistance to chemicals, e.g., chlorides and solvents. However, LDPE pipes are much cheaper than PVC pipes. The temperature ranges that LDPE pipes work efficiently range from – 50⁰C and 80⁰ C. The melting temperature of LDPE pipes is 120 ⁰C. LDPE pipes have high compressive strength, flexibility, and high expansion properties than high-density polyethylene (HDPE) pipes.

High-density polyethylene pipes

High-density polyethylene pipes are the most preferred types of pipes to be used for irrigation presently. They are high-quality irrigation pipes for crop farming that operate over a wide range of temperatures. They are black due to carbon black added during manufacturing. The main purpose of carbon black is to help in protecting the pipe against ultraviolet rays. HDPE pipes are made through the extrusion process and come in diameters ranging from 16 mm to 1600 mm. New HDPE pipes come in standard lengths of 6 m to 100 m. HDPE pipes are classified according to their pressure ratings, and the following classes are available; PN 2.5, PN 4, PN 6, PN 10, PN 16, PN 20, and PN 25. Joining one HDPE pipe to another can be achieved by either welding or using HDPE fittings. These HDPE fittings include; tees, elbows, couplings, reducing couplings, male and female adapters, and end caps.

Advantages of HDPE pipes as quality irrigation pipes for crop farming are;

HDPE pipes have high flow rates due to the smooth nature of the inner walls of the pipe
HDPE pipes operate over a wide range of temperatures, i.e., between -220⁰C and 180⁰
These high-quality irrigation pipes for crop farming are light and easy to transport.
Simple methods of joining HDPE pipes are available
Unlike in LDPE pipes, there is no leaching in HDPE pipes
HDPE pipes can be laid above the soil surface since they have resistance to ultraviolet rays
HDPE pipes are resistant to chemicals

The only limitations that HDPE pipes have are that they have a high thermal expansion, they are highly flammable, and they are susceptible to stress cracking.

PVC lay flat hose

These water conveyance pipes are woven continuously using a high tensile strength polyester for reinforcement purposes. These high-quality irrigation pipes for crop farming operate within a temperature range of -10⁰C and 60⁰ C. They come in lengths of up to 100 m, and the working pressures range from 8 to 40 bars. PVC lay flat can be classified according to the following ways.

According to working pressures – lay flats hoses can be grouped either as type 8, 10, 13, 16, 20, 25,30, or 40. The number represents the maximum pressure the lay flat can withstand.
According to inner diameter – groupings according to the inner diameter are 25-1″, 40-1.5″, 50-2″, 65-2.5″, 80-3″, 100-4″, 125-5″, 150-6″, and 200-8“.
According to the number of layers of strips – PVC lay flats hoses grouped according to number of layer strips are single stripped PVC lay flats and double Stripped PVC lay flats
According to the lay flat hose material – lay flats grouped according to hose materials are naturals rubber, polyvinyl chloride, polyurethane (PU), ethylene polymer terpolymer (EPDM), and the double-sided adhesive. The lay flat hoses made from EPDM are oxidation, ozone, and corrosion-resistant. Lay flat hoses made from PU materials are much softer.
According to the use – PVC lay flat hoses are used in various places. These areas are fire protection, irrigation, mine rescue, road engineering, and river dredging.

The advantages of using a PVC lay flat are:

They are light and flexible
They are durable and strong
They are ultraviolet protected
They are made to be tough, resisting abrasions.
They have a burst pressure three times stronger than the working pressures.
They don’t age
They come in a variety of colors.

Suction pipes

Suction pipes are quality irrigation pipes for crop farming mainly used on pumps to deliver water from the water source. Short suctions pipes are mostly preferred because of energy efficiency and to avoid cavitation. A short suction pipe will ensure the pump uses less energy during suction. Cavitation occurs when air pockets are created due to changes in pressure. When the bubbles explode, they send shockwaves to the surrounding components causing damage.

Factors to consider when choosing quality irrigation pipes for crop farming.

There are several factors to be checked to choose the right material for quality irrigation pipes for crop farming. These factors include;

The water pressure – different irrigation methods require different water pressures to work effectively. Drip irrigation system requires less water pressure than sprinkler irrigation systems. If high water pressures are expected, it’s best to use irrigation pipes with high-pressure ratings.
The nature of water being transported – fertilizer is usually added to the water in most irrigation systems to ensure even distribution of nutrients to the plants. If this method is going to be applied, then it is best to use irrigation pipes with high chemical and corrosion resistance. Also, when using water with high chlorine contents, it is best to use pipes with high chemical and corrosion resistance.
Ease of installation and maintenance – a system with the least challenges should be used.
Pipe placement – if the irrigation pipes are going to be placed above the soil surface, it’s best to go for ultraviolet resistant pipes, e.g., HDPE pipes. Pipes that are going to be buried should be buried at the appropriate depth to avoid damage to the pipes.
The water flow temperature in the system – each quality irrigation pipe for crop farming has a temperature range where the pipe has optimum performance. The temperature of the water being used in the irrigation scheme should be checked. The minimum and maximum temperatures of irrigation water determine the type of pipe to be used.
The expected life of the irrigation pipes – high-quality irrigation pipes have a high expected lifetime compared to low-quality irrigation pipes.
Cost of the irrigation pipes – high-quality pipes are more expensive than low-quality irrigation pipes. The amount of money a farmer has, determines the type of pipe to be purchased.
Availability of valves and fittings – some irrigation pipes have fewer fittings and valves to choose from, whereas others have many.

Price of quality irrigation pipes for crop farming in Kenya:

There are a variety of quality irrigation pipes for crop farming available for sale. At Eunidrip, we deal with the country’s best quality PVC and HDPE pipes. The prices vary depending on the size of the pipe. The following is a list of the available HDPE pipes and their prices at Eunidrip irrigation systems.

Pipe diameter	Length per roll(meters)	Price per roll
16mm	100	1700
20mm	100	3300
25mm	100	3900
32mm	100	5500
40mm	100	9000
50mm	100	12500
63mm	100	18000

PVC pipes available for sale at are:

Pipe in millimeters	Pipe size in inches	Running length in meters	Price
20	1/2	6	110
25	3/4	6	190
32	1	6	300
40	1 ¼	6	400
50	1 ½	6	510
63	2	6	650
75	2 ½	6	950
90	3	6	1,050

How to repair quality irrigation pipes for crop farming

For optimum pressures to be attained in an irrigation system, the irrigation pipes must not have any leakage. Leakages result in pressure losses in the pipes. It is important to know how to repair various irrigation pipes to save on the costs of buying new pipes. The following are ways to repair different quality irrigation pipes for crop farming.

PVC pipes

PVC pipes are quality irrigation pipes for crop farming that are very easily damaged. Minor leaks can easily be repaired. However, if the damage is too much, the whole pipe needs to be replaced. Common reasons as to why PVC pipes leak are:

During installation, the PVC pipes were not sealed properly.
The use of wrong PVC cement – PVC cement refers to the adhesive glue used to join two PVC pipes.
Damage due to freezing of the PVC pipes – PVC pipes can become brittle with exposure to freezing temperatures. At this time, it is very easy to damage the PVC pipes.

PVC pipes can be repaired in a variety of ways. Examples of these ways are;

By use of fiberglass resin tape or cloth – Fiberglass resin is water-activated, and it hardens when placed where the leak is. Before applying the resin, the damaged part is cleaned, and the tape is wrapped around the damaged area while it is still wet. The resin takes about 15 minutes to harden, sealing off the damaged part. Fiber resin cloth is used to make more permanent repairs on the pipe. The damaged part is cleaned first and made to be rough to create an adhesive surface. The resin cloth is placed over the damaged part, and ultraviolet light is used to cure the resin.
The second method of repairing PVC quality irrigation pipes for crop farming involves epoxy- Epoxy is a viscous fluid used to repair PVC pipes. To start the repairing process, clean and dry the damaged part first. Afterward, mix the epoxy according to the instructions and apply it to the damaged part. Let it cure for about ten minutes and confirm if there are any leaks.
Using rubber and silicone repair tape – this tape seals a leak by using compression. The tape is wrapped tightly around the damaged part, adhering to itself as it’s rolled around the damaged part.
By using rubber tape and hose clamps – in this method, rubber is used to wrap around the damaged part, then the hose clamps are separated, placing them on the damaged area. This method is used to repair small leaks, and it is used for temporary fixes. As time goes by, the hose clamps lose their effectiveness, and leaking will resume.
Replacement – the PVC pipe should be replaced when the damage is too much. The first thing to be done is to cut off the damaged part. The part is cut one inch more to the left and the right. The part to be repaired is cleaned and dried. Dry fit the replacement pipe to ensure that the pipe is properly secured. A PVC prime solvent is then applied to the inside of the replacement pipe and outside the existing pipe. Apply glue to the exposed PVC pipe inside the replacement pipe and insert the existing pipe into the replacement pipe. Hold the pipe for about 15 seconds to ensure the bond is strong.

HDPE pipes

HDPE pipes are quality irrigation pipes that are pretty easy to repair for crop farming. Like PVC pipes, the extent of the damage determines the action to be taken. If the damage to the pipes is too much, then the pipe must be replaced. If the damage is minor, repairs can be done. The first step of any repair is to locate the damaged part. If the HDPE pipes are above the soil, it will be easy to locate the leak. If the HDPE pipes are buried, then areas with a lot of water can indicate where the leak is. The reasons that can result in leakage of HDPE pipes are worn-out rubber seals on the couplings and mechanical damage to the pipes. To fix a leak in HDPE pipes, the following procedure is to be followed:

Turn off the water to avoid water wastage while you dig out the pipe.
Digging – this is done for HDPE pipes that are installed under the soil. Dig carefully where you suspect the leak is to avoid more damage to the pipe.
Check to confirm that you have found the leak and plan on how to cut the pipe.
Use a pipe cutter to cut the pipe and install the necessary fittings. We use a clamp or a coupling to join the two cut parts
Tighten the clamps to ensure there is no more leakage.

PVC lay flat hoses

PVC lay flats can be damaged due to poor storage or improper operation. These quality irrigation pipes for crop farming can be repaired easily if the hole is small. The first thing to do is find an old lay flat hose and cut part of it. The cut part should be larger than the hole to be repaired. Electric soldering is done on the cut part, joining it to where the hole was. A PVC lay flat hose can also be repaired using high-quality glue. If the part to be repaired is on a joint, it is necessary to cut off the joint and retie it.

Quality irrigation pipes for crop farming layout

In irrigation schemes, pipes of different sizes and types are arranged to achieve efficient water distribution. Pipes of the same size are used to maintain water pressure in irrigation pipes. Irrigation pipes can also be arranged with decreasing diameters from the pump to the farm. By doing this, the pressure in the irrigation pipes increases. It is unconventional to increase the size of irrigation pipes from a small diameter to a larger diameter since there will be a lot of pressure loss. Various factors affect the layout design used in quality irrigation pipes for crop farming. These factors are topography, the plants to be grown, the irrigation system used, and the size of the farm.

Topography

The topography of an area greatly affects the layout design. When designing an irrigation scheme, the highest and lowest points on the farm are first determined. To reduce the resistance of flow by water, the tank is placed at the highest point so that water can flow by gravity. The main lines are arranged along the slope, whereas the laterals are across the slope. By placing the mainline along the slope, gravity assists in delivering the water. Laterals are placed across the slope to avoid water accumulating on one end.

The plants to be grown

Various plants have different characteristics that determine the irrigation method to be used. Tree crops like avocados, mangoes, and pawpaws use a button dripper irrigation design, whereas tomatoes, lettuce, and beans perform best with a drip irrigation system.

Size and shape of the farm

In a large farm, bigger and a lot of pipes will be used compared to a small farm. In a big farm, the flow rates required are high. To achieve this, pipes of large diameters are needed. The shape of the farm determines how the pipes will be laid. A good design will ensure water is available at every corner of the farm, no matter the shape.

Irrigation system being used

The piping network done on each irrigation method vary greatly.

Source of water

The source of water affects the design of quality irrigation pipes for crop farming to be used. Most irrigation designs start from the source of water, which will determine how the pipes will be laid.

Drip irrigation system design

DRIP IRRIGATION SYSTEM DESIGN

Description

Drip irrigation system design is a method of irrigation where water is applied slowly and frequently, directly into the vicinity of the root zone of the crop wetting only a very limited fraction of total surface area and depth of the soil. Water is applied close to plants so that only part of the soil in which the roots grow is wetted, unlike other systems of irrigation, which involves wetting the whole soil profile. With drip irrigation water, applications are more frequent than with other methods and this provides a very favorable high moisture level in the soil in which plants can flourish.

Drip Irrigation system is based on two main fundamental concepts of irrigating only the root zone of the crop rather than the entire land surface and also maintaining the water content in the root zone at near optimum levels

Drip irrigation system is accomplished by use of pressures ranging from 15 to 200 kPa (1.5 to 20 m head of water) to drip water one-drop-at-a-time onto the land or into the root zone and also to spraying water as a fine mist over portions of the land surface.

Factors to consider when selecting the drip irrigation system design.

Drip irrigation system is one of the cheapest and easiest ways of irrigation a farmer should prefer. While selecting this type of irrigation system the following factors should be considered.

Types of crops

**Drip irrigation system design for the Chive**

Drip irrigation system is most suitable for row crops including vegetables, fruits, tree and vine crops where one or more emitters can be provided for each plant. Generally, only high value crops are considered because of the high capital costs of installing a drip system.

Nature of the land.

Drip irrigation system is adaptable to any farmable slope. Normally the crop would be planted along contour lines and the water supply pipes would be laid along the contour also. This is done to minimize changes in emitter discharge as a result of land elevation changes.

Suitable soils

Drip irrigation system is suitable for most soils. On clay soils water must be applied slowly to avoid surface water ponding and runoff. On sandy soils higher emitter discharge rates will be considered to ensure adequate lateral wetting of the soil.

Suitable irrigation water

Drip irrigation system requires water that is clean and free of sediments, algae, fertilizer deposits and undissolved chemical particles. This is because all emitters have very small waterways with diameter ranging from 0.2 to 2mm, which can become blocked if the water in dirty. Dripping water to individual plants also means that the method can be very efficient in water use. For this reason, it is most suitable when water is scarce.

Components of Drip irrigation system design.

Drip irrigation system is comprised of the following basic elements:

Control head (Central Control).

This comprises of valves, discharge, and pressure meters. It provides a means for Control and regulation of discharges, and pressures, including non-return valves and air vents. It also has an automation and control equipment, filters and dissolved fertilizer applicators. Depending on the size of the system, there may be several control heads, each serving an irrigation unit.

The Main pipe

This is generally a rigid pipeline made from HDPE, asbestos cement or concrete. The main pipe is almost always buried and conveys water from the source to the main control points in the field.

The Sub-main pipe

This is a multi-valve pipe distributing irrigation water to the various sub-units within a unit. A sub-unit in this case represents an area which simultaneously receives irrigation water from a single control point and which is being controlled by a valve on the sub-main.

It is made up of rigid black polyethylene pipe which in most cases laid on the ground surface, with a diameter ranging between 32mm to 90mm (1.25” to 3.5”), at a pressure of 4 atm.

When designing the sub main line, it is good to consider several factors which include topography of the land, field geometry, water supply and the uniformity required.

The Auxiliary or Manifold pipe.

This is either a flexible (soft) or rigid pipe of high density polyethylene type, generally 20 to 75 mm diameter, which distributes water between the laterals belonging to a single sub-unit.

The manifold and its lateral are designed and operated as a single unified system which is controlled by a single valve.

Lateral (or Drip line) pipe.

This is basically a flexible (soft) polyethylene or PVC pipe buried or laid on the ground surface and which carries emitters. Its diameter ranges from 12 to 25 mm (0.5 to 1 in) and the pressure rating about 4 atmospheres. A typical trickle system may have up to or more than 10 km/ha of laterals.

The Emitters.

An emitter is a device or system element which makes the drip irrigation possible by providing irrigation water at low flows and atmospheric pressure. The performance of emitters determines to a large extent the efficiency of the system. Since their number is usually very high (from 2,000 to 20,000 per ha,

In Drip irrigation system, the most suitable emitters used are selected based on the following factors such as low in cost, uniform in structure and operation, simple to manufacture, and install, should be able to maintain low problematic at standard operating pressure (3 to 30 m), and should be able to produce a constant low-rate water supply at varying line pressure change.

The Specification of Emitters used in Drip Irrigation System design.

There are numerous designed specifications of an optimum emitter used in drip irrigation system:
It should be available in small increments of discharge on the order of 1 L/h.
The flow should be controlled within narrow limits as a function of operating pressure to properly balance applied water with crop water use;
The emitter should be able to resist degradation due to temperature fluctuations and solar radiation.
The operating pressure should be 2 to 5m (for low pressure) and 8 to 15 (for high pressure).
The discharge rate of emitters should range between 4 liters per hour (for low rate).4 to 10 liters/hour (for medium discharge), and beyond 15litres per hour for high discharge.
Should be able to offer flow regime of laminar flow, turbulent or partially turbulent.

The operating principle of Drip irrigation system design.

A drip irrigation system is usually permanent. When remaining in place during more than one season, a system is considered permanent. Thus it can easily be automated. This is very useful when there is little labour force. However, automation requires specialist skills and so this approach is unsuitable if such skills are not available.

With drip irrigation system, water can be applied frequently or every day if there is possibility. This can provide very favorable conditions for crop growth. However, if crops are used to being watered each day they may only develop shallow roots and if the system breaks down, the crop may begin to suffer very quickly.

The wetting patterns of drip irrigation emitters.

Drip irrigation only wets part of the soil root zone. This may be about, low as 30 – 40% % of the volume of soil wetted by the other methods of irrigation. The wetting patterns which develop from dripping water onto the soil depend on discharge and soil type.

Drip irrigation is not a substitute for other proven methods of irrigation. It is just another way of applying water. It is best suited to areas where water quality is marginal, land is steeply sloping or undulating and of poor quality, where water or labour are expensive, or where high value crops require frequent water applications.

Specific problems associated with drip system of irrigation.

As a matter of fact, Drip irrigation system being that it is cheap and easy to install, it is also associated with some of the emerging problems and challenges. These challenges are as mentioned below.

Emitters or drippers clogging effect.

The most serious problem in proper design, operation and maintenance of drip system of irrigation is emitter clogging. The orifices of drip system emitters or drippers are extremely small compared to the once in other systems of irrigation. There is therefore, high potential for emitter clogging by particulate, chemical precipitates, and bacteria. Emitter clogging can have severe impact on crop development because of the careful balance between crop water requirement and emitter discharge built into the design of trickle irrigation systems.

Solutions to problems associated with emitters clogging in drip irrigation system.

Criteria to handle the susceptibility of water supplies to emitter clogging should be developed in order to enable the designer to make decisions about the utility of water supplies that is necessary for drip irrigation. These criteria can help the designer in deciding whether drip irrigation system is the most adaptable system for a particular water supply and what type of filtration and water treatment devices may be required depending on the severity of the potential clogging problem.

Use of appropriate filtration system.

Filters should be used to remove undesirable material from the water supply before it enters in the distribution system and creates potential for emitter clogging. Some type of filtration system is required on virtually in any drip system to ensure efficient system operation. Different types of filtration devices are effective in removing different size material from water source. The filter should be sized based on the emitter opening and the type of material to be removed. The most common filtration systems used for trickle irrigation systems Includes media or sand filters, Screen filters and Centrifugal filtration systems.

Bacteria Treatment

Drip irrigation distribution systems can be clogged in a very short time by bacteria slime which blocks the distribution system.

High bacteria concentrations require treatment by bactericides, which contains chlorine or other compounds which must remain in contact with the water source long enough to kill off the bacteria. Normally 10 – 30 minutes of contact in a solution with free residual chlorine concentrations of 1 mg/L is adequate.

Chemical Treatment

Chemical treatment is required to reduce the potential for precipitation of insoluble salts at the orifice and internal parts of emitters which causes clogging.

These precipitates are commonly caused by the reactions of soluble calcium and bicarbonates in the irrigation water, producing calcium carbonate.

The normal procedure to inhibit this reaction is to control the solution pH by addition of various acids recommended for use.

Fertilizer Injection Systems

Drip irrigation system designs are particularly adaptable to fertilizer injection into the distribution system. This is because the water is applied directly to the plant root zone.

This leads to efficiency of fertilizer use, reduced energy and labour costs, and flexibility in field management

However, care must be exercised to prevent the fertilizer from corroding the distribution system components.

It should also be noted that due to water supply, algae growth and bacteria slime problems may occur. These can cause clogging emitters and screen and filter blockage.

Operation Procedures of Injection Equipment

The basic principle of operating fertilizer and chemical equipment injection systems is that the material should not be allowed to set in the lines when the system is not operating.

Advantages of drip irrigation system.

Drip irrigation system has got various benefits to the farmer as follows.

Distribution of water is at the optimum level.
Minimization of Fertilizer or nutrient loss during application.
Weeds effect are minimized since there is no water available for them
Drip irrigation enables the farmer to achieve maximum crop yield.
High efficiency of Fertilizers usage.
Drip irrigation ensures minimum operating cost
Reduction of soil erosion
High water infiltration rate into the soil
High seed germination rate
We can use recycled water safely.
We can irrigate water in irregular shaped lands.
low energy operation rate

Disadvantages of drip irrigation systems.

Initial cost of operation is relatively high especially for poor farmers.
Clogging effect is a very disgusting issue in drip systems of irrigation.

Irrigation method for dragon fruit farming in Kenya

**Dragon fruit under irrigation system**

Dragon fruit is a fruit that is increasingly becoming popular among the farmers because of its value and the simple management practices as compared to other known fruit plants thus need for appropriate irrigation method for dragon fruit farming in Kenya. The plant is a native of Mexico and Central America but current it is grown worldwide.

Many people may refer to this fruit as pitaya, pitahaya and strawberry bear but its scientific name is Hylocereus Cactus or Honolulu queen which is believed to be nocturnal plant because it opens its flowers at night but during the day, they remained close.

There are various types of the dragon fruit but the mostly recognized have got bright red skin with green scales that looks like a dragon and the white pulp with black seeds.

The fruit is widely known for its mild flavor sweetness

How to prepare land for drip irrigation for dragon fruit farming in Kenya

Land preparation for drip irrigation for dragon fruit farming in Kenya is a process that involves several activities which may include, plowing and breaking of soil particles or the clods and addition of important soil nutrients. The purpose of these activities is to improve crop/plant growth and development.

Land preparation ensures that there is sufficient water, heat, oxygen, and other important soil nutrients. This process will allow the soil to be more compressible to allow the penetration of the roots. These involves the use of disc harrows, ploughs and drillers.

When preparing land for irrigation for dragon fruit farming in Kenya, there is no use of raised beds since they are less important. Beds are only recommended when using the drip line or the drip tape because this piping require generally level area in order to discharge water accordingly and to allow ease movement of the farm operators unlike the irrigation method for dragon fruit which levelling off the ground is unnecessary. Moreover, raised beds also play a major role in drainage and aeration

Factors to consider when selecting proper land for irrigation of dragon fruit farming in Kenya

Generally sloping land to minimize clogging in case of heavy rainfall

This includes ease of access to relevant infrastructure which may include electricity, good road network to allow ease of moving farm inputs and produce
Labor and expertise: Expertise and labor are very critical when doing preparation for drip irrigation for dragon fruit farming in Kenya and may include skilled or non-skilled.

Labor and expertise go along with the culture of a specific community in and around the farm.
Labour is a major component of production and its cost determine the success or failure of your enterprise

4. Security.

The farm should be well secured from thieves, stray animals, rodents and other disease-causing organisms. This can be done by erecting fence around the farm or employing the watch guard to care for the farm.

When doing land preparation for drip irrigation in Kenya, the area should be free from rodents because rodents are the major drip tape/ drip line destroyers. To keep these rodents away, the nearby bushes should be cleared and pesticides sprayed.

5. Soil characteristics and crop climatic conditions.

Different crops do well in different soil and climatic conditions. Some crops do well in acidic soil.

While others do well in a basic or alkaline environment. On the same note, high land crops cannot do well in lowland areas unless special conditions are provided and if these conditions have to be reversed proper and special conditions should be provided.

These special conditions may include soil treatments and irrigation or using specialized equipment when installing your drip system e.g. venture injector

The procedure of obtaining a good bed for the drip irrigation for dragon fruit farming system

As stated earlier, dragon fruits are rowed and column fruits however, they can be grown in an irregular form since watering of these plants depends on water pump horse power and the piping systems. Since majority of the pipes are flexible, the arrangement of the plants does not matter.

The plowing should be done along with the land/garden during the first plowing and across during the second plowing.
This will ensure microorganisms and weed seeds are brought above the soil and exposed to the sunlight.
On exposing these it ensures faster growth of weed seeds due to warmth. After germination of the weed seeds due to favorable conditions brought by sunlight, use the recommended herbicides to kill the weed. Get recommendations from a qualified agronomist.
Do final plowing to bury the dead plants into the soil. The weed will later decompose/rot to add nutrients to the soil.

Considering the spacing of the dragon fruits, use the drillers to make holes to specific depths. The holes depend with the number of plants one is willing to plant and the management pattern to be applied.

steps of obtaining the best depth for drip irrigation for dragon fruit farming in Kenya

In hole depth preparation, the standard and most recommended bed sizes range from 0.3 meters (0.3m) for short season crops and sometimes to 0.5 meters (0.5) meters

The most convenient path width should be between 4m to 5m. This will ensure major parts of the land are put under cultivation.
After the selection of the convenient bed width and the paths, the holes are made to a spacing between 4m to 5m.
While digging the hoes depths, breakdown soil clods (big soil particles brought about during plowing) into fine particles to allow free movement of air and water through the soil.
Remove weeds and mix manure into the soil to expose microorganisms the soil to the sunlight to be killed.
After all these practices prepare and organize for the drip installation process. Collect drip irrigation equipment like drip tape, drip fittings (takeoffs, end caps and starters) and drip irrigation pipes as the main lines

Benefits of best drip irrigation for dragon fruit system

The drip irrigation system is the most efficient method of irrigation. Through emitters, water is directly delivered to the plant root zone hence economical on water usage.
In the best drip irrigation system, there is a constant benefit of water supply in small quantities to the plants. This creates an ideal moist condition for proper growth of most plants.
The best drip irrigation system minimizes weed growth since water is only supplied to a particular crop root.
The best drip irrigation system helps in the control of fungal diseases which grow very fast under moist conditions.
Timeliness and labor-saving. In the best drip irrigation system, the control valves can be managed by one personnel. One person operates the whole system thus minimizing the labor costs. This minimizes production cost.
Ease in fertilizer application. method of liquid fertilizer application (fertigation) is very easy and fast. Since water emitters are used to directly distribute fertilizers to particular crop/plants.

Basic Materials

The materials needed for the installation are just basic piping equipment. These materials include HDPE pipes, none return valves water filters, ball valves air release valves, elbows, ninety degrees tees forty-five degrees tees, Drip tapes, drip fittings, button drippers and any other relevant types of equipment

ORCHARDS DRIP IRRIGATION

ORCHARDS DRIP IRRIGATION FOR SALE IN KENYA

Orchard drip irrigation system for water melon for sale in Kenya — **Orchard drip irrigation system for watermelon**

Orchard drip irrigation system is the most efficient way to irrigate orchards since it can save water and nutrients by allowing water to drip slowly to the roots of the fruits plants, either above the soil surface or buried below the surface. Therefore, it is a more so efficient and effective method compared to overhead sprinklers and surface irrigation. Besides water efficiency, drip irrigation also reduces the risk of plant diseases that thrive in wet conditions.

Drip irrigation in Kenya is commonly used in an orchard because it minimizes the cost of production due to the larger spacing between the emitters and laterals. This also has some added advantages to the farmer in that it simplifies the irrigation procedure, thus minimizing distribution and evaporation losses. In addition, the system can be automated with a time clock and moisture sensors, and automated valves, thus maintaining optimal soil moisture with minimum labor.

Special features of the orchards plants that make drip irrigation possible.

Orchard drip irrigation is considered one of the best ways of irrigation an orchard because some of the orchards plants have various characteristics that are delicate when exposed to other irrigation methods.

The orchard’s plants are planted with a more considerable spacing difference between the rows and plants. This larger spacing is very easy to accommodate the drip irrigation method since They can efficiently distribute water per the individual plants.
Most orchards plants are adapted to any topography, be it flat land, rugged landscape, or even sloping lands; thus, drip irrigation is the best for this kind of plant.
All orchard plants require even water distribution at all times. Therefore, drip irrigation now becomes the only remedy for water solutions on such a farm.
The majority of these orchard plants have got a high rate of water absorption rate. Therefore, they can only solve this case by applying the drip method of irrigation.
These farms contain plants of single varieties that make it possible to be irrigated by a drip system.

Orchard plants can be irrigated using the drip irrigation method.

An orchard is a broad field spectrum that combines so many types and varieties of crops and plants. Some of these crops cannot survive under drip irrigation due to their unique features.

Example of orchard plants that can be watered by applying drip irrigation methods includes:

Vegetables

Cabbage,greenchillies,beetroots,brocoli,capsicum,carrots,cauliflower,cucumber,pumpkin,onion,peas,sweetpotatoe,tomato,etc.

Plantations

Areca nut, cashew nut, cocoa, coconut, oil palm, tea, coffee, mushroom, tomato tree, avocado, etc.

Fruits

Apple, banana, blueberry, chestnut, guava, mangoes, jackfruit, fig, papaya, passion fruit, pineapple, strawberry, water melon, almond tree, sweet oranges.

Factors to consider when designing irrigation system for an orchard.

When designing the drip system for avocado trees the following should be considered

Sustainability rate

The Ideal system should be capable of delivering water to a limited area under each tree when young to reduce water wastage.

Wetted diameter

System should be capable of increasing the wetted area to take into account tree growth and larger canopy area at orchard maturity. Sufficient pressure and pipe delivery must be catered for as the system has to expand.

Durability and flexibility

The drip system should not be prone to blockages.

High water delivery rate

The system should be capable of delivering more than 40 to 70 liters of water per hour per emitter .It should be designed in such a way that the cycle time between irrigations does not have to exceed one week. On well-drained soils, stress conditions can develop rapidly especially during periods of hot weather.

When to irrigate

The most efficient way to water is to apply water when it begins to show signs of stress from lack of water .These signs of water stress includes footprints or tire tracks that remain in the grass long after being made, many leaf blades folded in half, premature fruit drop and flaccid fruits on trees. The system should be designed in such a way that different blocks on different soil types, are capable of being irrigated as separate entities. This is important as water requirements can differ.

Efficiency of water application

An efficient watering does not saturate the soil, and does not allow water to run off. Therefore it is advisable to avoid extremes in watering frequency and amount. If you apply too much water, it runs off and is wasted. On the other hand, light frequent watering is inefficient and encourages shallow/restricted root systems.

Components of orchard drip irrigation system.

Orchards drip irrigation design components comprises of the following sections

Control head or pumping units

The Main pipe

This is generally a rigid pipeline made from HDPE, asbestos cement or concrete. The main pipe is almost always buried and conveys water from the source to the main control points in the field.

The Sub-main pipe

This is a multi-valve pipe distributing irrigation water to the various sub-units within a unit. It is made up of rigid black polyethylene pipe which in most cases laid on the ground surface, with a diameter ranging between 32mm to 90mm “1.25” t” 3.5″),at a pressure of 4 atm. When designing the sub main line it is good to consider several factors which include topography of the land, field geometry, water supply and the uniformity required.

The Manifold pipe

This is either a flexible (soft) or rigid pipe of high density polyethylene type, generally 20 to 75 mm diameter, which distributes water between the laterals belonging to a single sub-unit. The manifold and its lateral are designed and operated as a single unified system which is controlled by a single valve.

Lateral or Drip line pipe

This is basically a flexible (soft) polyethylene or PVC pipe buried or laid on the ground surface and which carries emitters or drippers.. Its diameter ranges from to 0.5 to 1- inch and the pressure rating about 4 atmospheres.

The Emitters or drippers

An emitter is a device or system element which makes the drip irrigation possible by providing irrigation water at low flows and atmospheric pressure. In Avocado drip irrigation design, the most suitable emitters used are selected based on the following factors such as low in cost, uniform in structure and operation ,simple to manufacture, and install, should be able to maintain low problematic at standard operating pressure of between 3 to 30 m, and should be able to produce a constant low-rate water supply at varying line pressure change.

Other design components of avocado button drip irrigation include:

Water meter, reduced pressure backflow device, main valve, valve, flow meter gauges, air –vacuum relief valves, injecting equipment and filters.

Design layout of the orchard drip irrigation system.

To start the installation process, the following should be in place.

Tape measure, hose puncher to attach emitters to the pipes goof plugs to plug up any unwanted punch holes, metal stakes and zinc ties to secure the drip lines on their location.
Connect the water source to the main line delivery pipe using a water valve. Connect the two with a backflow preventer valve to stop contaminated water from leaking back into the initial water source.
Once the water source is connected to the main water distribution line, lay the laterals and delivery lines in accordance with the layout of your farm. Roll the tubing out around the garden beds, laying the line flush.
Once the mainline and laterals is in place, use a punch tool to make a hole in the lateral line wherever an emitter goes. Position your emitters so they are close to the root zone of each plant. To punch the holes, use boiling water or a hair dryer to heat the tube, which makes it softer to make holes. Once you have the tubing laid out and your emitter holes punched, secure the tubing into the ground with tubing stakes.
Once the system is completely installed, it needs to be tested by allowing water to flow in to the system.

Design layout of the orchards drip irrigation system continuation

Before allowing the water in to the system, ensure that all the valves are open. After main, sub mains and laterals are flushed completely close the flushed completely close the flush valve and end caps.
After closing of the valves and caps check the pressure at pressure gages and ensure that the pressure at the selected points is as per the design pressure.
It is also required to check the working of filters, air release valves and the fertigation unit. Once it is ensured that all the component is in good working conditions, then the operation should start.
Test the efficiency of water flow by turn on the water and allow it to run freely for a few minutes to flush out any dirt or debris. Once you see the system runs properly, close the tubing with an end cap.

Maintenance of orchards drip irrigation system.

For the water distribution in an orchard to perform effectively, proper maintenance should be done in various sections of the systems. This will also reduce the cost of production in terms of inputs and labor requirements to a farmer.

Emitters used should be able to match with the topographical status of the orchard farm. This should be checked regularly.
Orchards drip irrigation requires much spacing thus thinning should be done regularly in order to determine the quality of irrigation.
The distribution of the trees and crops should be in uniform state for efficient water use.
In an orchards with high drip irrigation demands alternative pipes should be factored.
When installing the orchard drip irrigation system, sub main line specifications should be considered.
This is to ensure maximum efficiency of drip irrigation systems. It also helps to protect the drip lines and drippers from early degradation by weather and chemicals.

Advantages of orchard drip irrigation system.

Orchards drip irrigation system has got various benefits to the farmer as follows.

Water is used and distributed at the optimum level.
Improves soil conditions.
Enhances food security to the farmer.
Allows reuse of waste water.
Fertilizer or nutrient loss is minimized during application..
Weeds effect are minimized since there is no water available for them
Drip irrigation enables the farmer to achieve maximum crop yield.
Fertilizers can be used with high efficiency.
Drip irrigation ensures minimum operating cost
There is no soil erosion as water is applied directly to plant roots.
Soil infiltration capacity is increased.
Fertilizers and ground water is not mixed.
improved seed germination is highly achieved.
We can use recycled water safely.
We can irrigate water in irregular shaped lands.
In this method of irrigation, energy cost is greatly reduced since it is operated in lower pressure.

Disadvantages of orchard drip irrigation system

Being that drip irrigation system is a very important tool to a farmer, it also possesses some few disadvantages.

Orchard drip irrigation is very expensive due to high initial cost to poor farmers thus not suitable for struggling farmers.
Clogging of drippers and emitter is a common thing in all drip irrigation systems. It may thus discourage most farmers to invest on this drip system of irrigation.

THE BEST DAM LINER PRICES IN KENYA

THE BEST DAM LINER PRICES IN KENYA.

Dam liner is thin water proof geomembrane that is used for the retention of liquids. It is used specifically in the lining of not only dams, fishponds, water reservoirs, garden ponds but also in hazardous and nonhazardous surface. They often offer simple ways of providing waterproofing and lining of water pans and ponds where the soil is too porous. Dam liners are also mostly applicable in the design of water harvesting structures used in irrigation, drinking, and fish farming or any domestic purposes.

Characteristics of a good dam liner that a farmer may consider.

Dam liners have various characteristics that make them suitable to be used in various water projects and infrastructures. These characteristics vary depending on the type and dimensions based on the different manufactures. Furthermore, water projects structures including dams and ponds require the very best liner materials to prevent puncturing and leakage from the reservoir to increase their life span.

Dam liners should be able to last longer and have a span of about 25 years. It should be resistant to excess ultra violet radiation and UV treated in order to increase its durability, flexibility, and longevity depending on the thickness .

the liner should also be made from original materials so as to make it long-lasting since the virgin materials have not been affected by the weather elements.

Materials that are used to manufacture dam liners should be of high resistance to abrasion, puncturing, cracking, low temperature, corrosion, and should have a large temperature range.

They should be cheap, affordable, and friendly to the farmer, in terms of type of material, thickness, size of the dam among other features.

Types of dam liners sold in Kenya.

Majorly four types of dam liners are sold in the Kenyan market.

1. Ethylene propylene diene monomer (EPDM) Liners

EPDM is a type of rubber dam liner that is mostly used in small and medium decorated ponds. It is very much flexible and easily bendable and can be bent into different shapes and corners. EPDM is very easy to puncture or tear with heavy, weighty, and difficult to pull abilities and it does not come into wide length. Its life expectancy can be about 20-30 years. This type of liner is thick enough that it can be challenging to fold the liner to fit into the pond’s cavity.

Reinforced Polyethylene liners

Reinforced polyethylene liners are lighter in weight as compared to EPDM . They are one of the longest-lasting liners available in the current market, with a life span of up to 40 years, and are highly puncture resistant. They are stronger than other types of liners . They are higher and made with thicker material. The RPE liners are a good choice for large ponds because they are sold as large panels of approximately 60,000 square feet. The materials used to make them are cheap and cost-effective.

Butyl polypropylene Liners (Hdpe liners).

These are box welded polypropylene synthetic rubber liners. The content in the material makes the material easy to fit into irregularly shaped ponds with many nooks and crannies. They are preformed and can be made into different shapes including 3-D shaped liners that are heat welded into rectangular and cylindrical shapes using flexible polypropylene liners. BPL is mainly used in informal ponds applications where clean liners are in demand. There is no need to fold them into different shapes. They have a life expectancy of approximately 25 years.

Polyvinyl Chloride plastic liners(PVC Liners)

The Polyvinyl chloride liners are the most cheaper, durable, and flexible pond liners that are commonly used by most people in Kenya. They are readily available in the market stores in a variety of widths and thicknesses. These types of liners do not have ultraviolet protection therefore any portion of the liner is exposed to the sun.

Design specification of dam liners materials.

Most of dam liners are manufactured depending on the volume of water it is holds, thickness, solar intensity, length and the surface type. These factors depend on the various sizes of the gauge of the liners.

300 microns (0.3mm) gauge

These types of liners are mainly used in smooth surfaces where there are no sharp objects. Severally used on small dams, with a specific length of 100meters and a width of up to 15meters. These liners are commonly welded together to fit the size of the dam. These make of liners have got a lifespan of approximately 10 to 20 years . They are ultraviolet treated thus can last longer. They are sold as black in color.

500 microns (0.5mm) gauge

These liners are applied in light surfaces, where there are no sharp objects. Normally applicable in medium dams. Often sold at a length of 200meters and width of 6 or 8 meters. Apparently, it can be also welded together into different shapes and designs. Their lifespan ranges between 10 – 15 years. Are black in color? They are also ultraviolet treated to ensure a longer lifespan thus have chemical and light resistance.

750microns (0.75 mm) gauge

The liners of these gauges are applicable for the medium to large projects. Usually sold in lengths of 150 meters and width 8 meters and are black in color. They can be welded and joined together into different shapes and designs. They are also ultraviolet treated thus longer lifespan of about 15-20 years.

1000 microns (1mm) gauge

These are a type of dam liners of greater thickness. mostly applied in large projects with rough surfaces, rocky or stony. Commonly retailed at a specific length of 120 meters and width of 8 meters. Characterized with a longer life span of between 20 – 30 years. They are ultraviolet treated hence can last longer.

Preparation of the dam site for installation of dam liner.

There are certain preparations that must be done on the site where the dam liner is to be installed, before placing, unfolding, and installing the dam liner. Kindly ensure that:

The site is cleared and all roots, stumps logs, boulders, rocks, outcrops, all vegetation, organic matter, loose clods, surface debris, mud, waterlogged ground, and water are removed.
The surface is compacted by rollers or vibrators to a finished grade level.
The surface is leveled to a uniform texture not exceed that of graded aggregate.
The graded surfaces are sand blinded to a particle size not exceeding that of course sand to a thickness of 5 mm.
The geotextile protection underlay should be placed to cushion and protect dam liner from damage by sharp objects as well as elevate puncture, impact, and abrasion resistance
Ensure that there is free drainage to all surfaces in contact with liner membrane, and the dam liner should not be installed in areas subject to flooding, tides, springs and thermal activity.

Installation procedure guide for dam liner.

Trench excavation. Dig or excavate a continuous perimeter trench on a stable berm all-round the dam site using a trench digger. The trench should be far enough from the edge of the berm to provide adequate anchorage. Backfill the trench at a height of 500mm over the buried liner.
Establishment of protrusions and venting. After establishing the trenches, dam liner penetrations should be subjected to designed requirements for easy operational purposes. The approved foundations, footings, pads, should be installed to allow for better stability at penetration positions. The sealing of the protruded structural or service elements to the liner membrane should be provided by an appropriate means to minimize liner stress.
Lay the unpacked liner at position on berm level ground and unroll to its full length at pond perimeter.
Then make the lower liner loose edge into the perimeter anchor trench allowing ample material to be secured to the full width and depth.
Using temporary sandbags hold the dam liner edge down intermittently along the trench at its anchor position.

Installation procedure guide for dam liner continuation

Depending on the stability of the trench wall, the material should be carried across the lining area by two separate installation crews each carrying half the total weight of the liner. Extend the liner from its folded end to the opposite perimeter trench while allowing ample liner to relax into its final position.
By pulling or tugging at the liner after it has settled on the pond/dam bed as friction against the ground of a large liner area can be difficult to overcome. This can only be avoided by taking proper precaution before beginning the installation process.
Finally, before the end of installation notes that when the liner has been loose laid with evenly distributed surface ripple, place all surplus liner material into the perimeter anchor trench, allowing ample liner on the pond/dam bed to avoid stretching from the ground settlement after filling.

Problems associated with the leakage of a dam liner.

Dam liners are faced with various challenges that may make them to crack and begin leaking. Some of these challenges may be environmental caused or human caused .They includes:

Poor choice of construction materials.
The internal soil erosion or piping
The cracking of the liner caused by changes to water levels
The presence topsoil and vegetation at the embankment site
Presence of an unsuitable soil type in the dam wall
The absence of a cut-off trench
Presence of uncompact soils techniques.
The presence of rock and gravel at the basement of the liner.
Presence of sand in the storage basin
The damage caused by animals and insects.
Presence of slumping cracks along the length of the wall due to a combination of poor compaction, excessive seepage and excessive steepness of bank
Poor site location for the dam installation.
Failure of dam liner due to longer lifespan.
Presence of trees on dam bank thus causing loss of storage volume due to uptake for self-watering.

Advantages of a dam liner to the farmer.

Most of dam liners are resistance to chemicals especially High-density polyethylene liners, thus there is no threat for hazardous waste.
Dam liners have low-permeability rate hence can retain water for many years.
They are safe and secure from water penetrations, and also it resists rainwater to seep into the dam liners.
They are ultraviolet-resistant and therefore are not easily damaged by environmental stress.
Most dam liners are cost-effective hence can easily be afforded by many poor farmers.
Available in a variety of shapes and sizes
Very easy to seal.
Usually light in weight hence easy to carry.
Are easily customized according to the purpose they portray.
Easy to clean and maintain.
Most of dam liners are highly durable and flexible.
Can mostly be designed into any required shape depending on the nature of the dam.
relatively easy and very fast to install.

Disadvantages of a dam liner to the farmer.

Dam liners have got various limitations to the farmers, especially to the poor small scale farmers .This is due to expensive cost of maintenance and installation and the nature of the dam liners.

Some of the dam liners are hard to conceal thus becomes deteriorated faster.
They are manufactured and sold with limited shapes and sizes so the farmer’s preferences cannot be satisfied.
Most of these dam liners are costly in terms of cost, maintenance and transportation and hence most farmers are unable to afford them.
They are hard to design especially for marshland and borderline plants.

ONION FARMING USING DRIP IRRIGATION.

Onion farming using drip irrigation

Onion farming using drip irrigation is considered as the best method of watering onions. Drip irrigation is slow and ensures an even application of low pressure water to soil and plants using drip tapes tubing and emitters placed directly at the plants root zone. This method of onion irrigation allows very little evaporation or runoff, saves water by directing it more precisely, reduces the transmission of pathogens, and produces fewer weeds. It also reduces the transmission of disease causing microorganisms and minimizes weeds invasion in the onion field.

Why onion farming using drip irrigation is the best.

Onion drip irrigation maintains desired soil moisture content

Maintaining the desired soil moisture content with drip irrigation has got some of the benefits to a farmer since it minimizes excessive root growth and it also reduces the risk of bulbs rot disease and bulb splitting.

Onion drip irrigation reduces fertilizer and nutrients wastage

The onion plants have a shallow, fibrous roots system, therefore fertilizers applied at the start of the season end up getting scattered below the root zone by the rain drops, thus making the nutrients unavailable to the crop. The drip irrigation offers consistent nutrition that always reaches the roots and gets retained thus helps to eliminates and minimizes waste.

Drip irrigation reduces the chances diseases invasion in onions

With drip irrigating, water is directed directly to the onion roots, thus leaving the leaves dry. Less moisture content on the leaf significantly reduces onion diseases such as Downey Mildew or bulb rot, thus minimizing crop loss and scaling up production up to 40 percent higher yields.

Drip irrigation in onions ensures efficient fertigation:

Onions need soluble minerals to grow especially phosphorus, which has low mobility within the soil. Which means that drip irrigation is the only option that can be used to apply consistent small doses of mineral nutrients and fertilizers as close to the active root hairs as possible to support boosting of mineral uptake by the onion plants.

What to consider when designing the onion farming using drip irrigation system.

Nature of the field or site

When designing onion drip irrigation system, it is better to identify the onion roots irrigation zones. This can be done based on various factors factors such as land topography, length of the field, soil condition, optimal drip tape run length, and filter sizes. Once the zones are assigned and the drip irrigation system designed, it is possible to schedule irrigations to meet the unique needs of each zone.

Drip system uniformity

Onions plants have got a very strong positive yield and very sensitive to wet soil, yet exhibit increased risk of decomposition in over wet soil. This therefore means that the drip system should be carefully designed to apply water uniformly. In excessively dry areas production curve reduces, and the disease and nutrients loss are promoted in excessively wet areas. By applying drip irrigations, the minimum water application uniformity for onion rangers between 80 – 90 percent.

The onions bed design specifications

When designing bed rows and furrows for onions, special configurations should be taken care of in terms of spacing and bed height. Spacing between the rows should be between 33 inches to around 50 inches. The 50 inches is the distance between the furrows. The double rows are spaced 20 inches apart and consist of two onion rows spaced at a distance of 4 inches apart. Drip tapes are installed 5 to 8 inches deep in the bed center, between the two double rows, at the time of planting. The tape emitters should be spaced 8 to 12 inches apart. This bed configuration minimizes the use and cost of drip tape per acre. On the other hands bed configurations have been used successfully, especially in soils where the water will not wick to the side more so for one tape to serve a conventional bed.

How do you install drip irrigation system for onions farming?

Onions drip irrigations is a very important practice that can be used to mitigate the impacts of drought and waterlogging in an onions field. It makes use of a system of tubing or tape that allows water to seep into the soil without wetting the field surface that may cause nutrients loss and disease invasion in onions. Drip irrigation in onions reduces the rate of water consumption as it provides a more accurate way to irrigate your onion crop for a large yield.

For you to come up with a simple design drip irrigation system for your onion field, the following installation guide may direct you to come up with a simple design layout.
The proper choice should be made whether to come up with raised beds or just to a plain field to install the proper drip irrigation system.
You need to create a 4-inch-deep furrow between your onion rows using a jembe, hand trowel or furrow excavating machine. You have to make sure that the furrow is at least 10 inches away from your onion roots sprouts more so if you do not grow them in rows. This is because placing the drip irrigation furrow lines too close may cause waterlogged soil conditions.

Drip system lateral installation

Place the laterals or a drip tape into the furrow. Measure the desired length of the furrow then cut it using gardening shears, if necessary. The tape should be extended far enough to reach the mainline of water supply, main pumping unit or a nearby water source.
Install the drip irrigation connector and merge it to the mainline of water or pumping station. Connect the system with backflow preventer, pressure regulator, filter and tubing adapter. Then now attach the tape to the drip irrigation’s tubing adapter. Turn on the water at the main pumping unit.
Confirm the drip tape within the furrow and make sure that it fills and seep water continuously into the soil, then turn off the water in order to finish up with the installation.
Fill up the furrows with the topsoil removed at the project’s inception using the hand trowel. Do not compact the soil down as this may cause breakages of the underlying pipes. Finally allow it to remain loose and well drained.
Turn on the water at main control unit, and then Press a moisture meter into the soil near the farthest onion plant. Check if the flow is smooth then Turn off the water when your meter indicates that the top soil cover is damp or approximately the depth of the onion bulbs.
You may spread a layer of mulch across the soil to retain moisture between irrigation periods though this is not compulsory unless there is possibility of doing it.

Specifications and design of onion farming using drip irrigation.

When designing the field for onions drip irrigation, consider the right measurements of the field, spacing, emitter’s size and the water pressure.

The onion beds should be 1.5 meters wide, having 3 rows of drip lines and about 30 centimeters drainage height.
The drip irrigation tapes should be of three rows of drip lines, which should be 30 centimeters apart.
The drip lines should be laid 20 centimeters from the edge of the bed.
When irrigating, use closely spaced emitters with spacing of 15 – 20 centimeters apart and below.
When approaching harvesting season, probably two to three weeks, and the rate of watering should be minimized since at this time of growth the mature leaves of the onions begins to drop.
The maximum pressure exerted by the drippers or emitters should range between 10 – 35 psi.
When designing of drip irrigation system for onions, the rate of solar intensity or solar exposure should be maintained at an average range of 10 to 12 hours for bulb formation especially in areas experiencing warm climatic conditions.

Maintenance of Onion farming using drip irrigation system.

Check for any for any leakages or breakages

Breakages and leakages may occur at different sections of the system unexpectedly as a result of damage by animals, or farming tools. The system should be monitored to inspect the lines for physical damage

Regular chemical applications

In the drip system for onions, the rate of water flow progressively declines during the season, and the tape may be slowly plugging thus resulting in severe damage to the crop. Applications of chemicals especially chlorine through the drip tape will help minimize clogging of emitters and drippers. This is because the algae growth and biological activity in the drip tape are usually high.

Regular check of the flow meter

The water flow meter in an integral part of the onion drip irrigation system and the gauge readings should be recorded regularly. This may be helpful to a farmer as it provides a clear indication of how much water should be applied to each root zone. The water flow records can be used to detect deviations from the standard flow, which may be caused by leaks in the system or by clogged lines.

Drip tape emitters

These are emitters determine the flow rate of water into the onion field. The drip tapes with lower water application rates make low-intensity and high-frequency irrigations more feasible by improving wetting pattern and uniformity. Low flow emitters with 0.15 gal per hour and ultra-low flow emitters with 0.07 gal per hour are two of the emitter’s options that is commercially available for silt loamy soils. The limitation of ultra-low flow emitters became visible when these two types of emitters were compared against each other. Ultra-low-flow emitters reduces the yield of the largest bulb size class of onions compared to low-flow emitters. The ideal emitter flow rates usually depend on the soil type.

Advantages of drip irrigation in onions farming.

Extensive land leveling is not required, drip irrigation can be employed in all landscapes;
Irrigation water can be used at a maximum efficiency level and water losses can be reduced to a minimum;
Soil conditions can be taken into account to a maximum extent and soil erosion risk due to irrigation water impact can be reduced to a minimum;
Fertilizer and nutrients can be used with high efficiency; as water is applied locally and leaching is reduced, fertilizer and nutrient loss is minimized
Reduced risk of groundwater contamination).
Weed growth is reduced as water and nutrients are supplied only to the cultivated plant;
Positive impact on seed germination and yield development;

advantages of drip irrigation in onions farming continuation

Low operational costs due to reduced labor requirement, in particular energy cost can be reduced as drip irrigation is operated with lower pressure than other irrigation methods
Turbulent flow through the dripper reduces likelihood of clogging
Uniform flow rate
Raised barbed outlet prevents water runoff along the drip lateral
Resistant to chemicals and fertilizers used in landscape applications
Constructed of UV-resistant, durable plastic material to withstand the most adverse conditions
We can use recycled water safely.
We can irrigate water in irregular shaped lands.

Disadvantages of onions drip irrigation system.

Being that drip irrigation system is a very important tool to a farmer, it also has some few disadvantages.

Onions drip irrigation is very expensive due to high initial cost to poor farmers.
This make it difficult for most farmers to consider other methods of irrigations that are cheap, flexible durable and the one they can afford.
Clogging of drippers and emitter is a common agenda in all drip irrigation systems. It may thus discourage most farmers to invest on this drip system of irrigation

Onion plants population

Drip irrigation ensures that the entire top of the onion bed is wetted. This makes farmers to assume that more onions could be planted per acre by spacing them closer together.

This technique results in increase in the total number of onions. Narrow spacing may result in lower value onions. In order to optimize financial returns, an onion farmer must consider the influence of plant population on bulb size.

Button drippers

Button drippers are irrigation tools that are used to supply water to plants at very low rates. Generally, they are drip emitters that ensure water is efficiently supplied to the plants below their canopies (below the stem).

Button drippers come in various color codes .i.e. black, green, blue, red and green colors. Even though they come in these color codes, their efficiencies are not affected. Colors do not affect the functionality but they are just for identification.

As the recent tools venturing into drip irrigation systems, button drippers are capable of emitting water from the main pipes at different rates of 1 liter per hour to over 60 liters per hour.

Because of this ability to emit water at different rates, they are highly employed in farming of crops like passion fruits , oranges, mangoes, tomato trees, and avocados, lawn irrigation, tree nurseries’ banana trees and more other sectors.

Button dripper’s specification is very important for an irrigation engineer since it helps to estimate water requirements for the entire season for the growth of crops This estimate also helps in sourcing in water in case of shortages

Button dripper is made of plastic, polyethylene, and is sold in packets or pieces. The wall thickness typically ranges from 1 mm–1.3 mm.

Thicker walled drippers are commonly used for permanent subsurface drip irrigation and thinner walled tapes for temporary type systems in high-value crops

Button dripper is well designed to discharge one litter of water per hour over 60 liters of water per hour. This discharge ensures water is efficiently and economically used.

The economical water budget is the major determinant of the production cost. This dictates the type of crop to be grown.

Button drippers

However, Broad leaved plants require much water as compared to small leaved plants. This will affect the button dripper water discharge capacity to be used

Types of button drippers

Adjustable button drippers – these drippers have threads on the crown where the lid with emitters is slide onto. The threads are made in such a way that at every thread, water is emitted at different flow rates according to water plant requirements.
Non- adjustable button drippers. In this type of dripper, water is emitted at the designed rate by the manufacturer. The crown does not have the threads thus it does not have a lid however, this type of drippers provide water equally and uniformly to plants.

How button dripper works

Button dripper uses the swirling -flow-path design producing a turbulent flow that ensures good watering abilities thus preventing the known problems of clogging.

They are Available in flow rates of 0.7 liters per to over 60 liters per hour. The operating pressure range of 15 to 25 PSI (and the higher pressure the higher the flow rate)

When buying the button drip emitters, you can find them in packets of 5, 25, 50 and 100, each with a either 16mm or 12 mm adapter and small nipple outlet.

Areas of applications of button drippers

an individual plant(passion fruits , oranges, mangoes, tomato trees, and avocados, lawn irrigation, tree nurseries’ banana trees)
planter boxes,
large pots
ground covers

Advantages of button drippers

Extensive land leveling is not required, drip irrigation can be employed in all landscapes;
Irrigation water can be used at a maximum efficiency level and water losses can be reduced to a minimum;
Soil conditions can be taken into account to a maximum extent and soil erosion risk due to irrigation water impact can be reduced to a minimum;
Fertilizer and nutrients can be used with high efficiency; as water is applied locally and leaching is reduced, fertilizer/nutrient loss is minimized (reduced risk of groundwater contamination);
Weed growth is reduced as water and nutrients are supplied only to the cultivated plant;
Positive impact on seed germination and yield development;
Low operational costs due to reduced labor requirement, in particular energy cost can be reduced as drip irrigation is operated with lower pressure than other irrigation methods

Turbulent flow through the dripper reduces likelihood of clogging
Uniform flow rate
Raised barbed outlet prevents water runoff along the drip lateral
Resistant to chemicals and fertilizers used in landscape applications
Constructed of UV-resistant, durable plastic material to withstand the most adverse conditions

Specifications

Flow rates of 0.7 liters per and over 60 liters per hour
The operating pressure range of 15 to 25 PSI
Button drippers come in various color codes .i.e. black, green, blue, red and green colors
Outlet is compatible with our multi-outlet dripper manifolds
Highly resistant to fertilizers and common chemicals used in agriculture

Passion fruit farming using simple irrigation system

Passion fruits are perennial crops i.e. crops that don’t need to be replanted each year. Its scientific name is Passiflora sp and belongs to the family of Passifloraceae.

In Kenya, passion fruits are grown in cold places like Thika, Nyamira, Kisii, Nyeri, Kakamega, Murang’a, Meru, among other regions.

Uses of passion fruit

The passion fruit may be eaten fresh or consumed after extracting the pulp and juice. Juice is used in a variety of products and the pulp may be added to various dishes.

Types of passion fruits in Kenya

There are two major types of passion fruits grown in Kenya and both varieties are usually green in color before ripening.

The following are the most common varieties grown in Kenya.

Passiflora edulis– this is purple in color when ripe, quite acidic, and tasty and juiciness varies. It has a strong aromatic scent and is round in shape.
Passiflora flavicarpa– it is yellow when ripe, oval in shape and less aromatic. This type is common in west rift areas that receive moderate rainfall with temperatures of 30 degrees Celsius.

Climatic conditions for the growth of passion fruits.

The factors listed below are the most considered factors whenever one wants to venture into passion fruit farming in Kenya.

Soil type

Passion fruit vines grow on many soil types but the best soil is light to heavy sandy loams with a pH of 6.5 to 7.5. Excellent drainage is absolutely necessary.

Also, the soil should be rich in organic matter and low in salts. If the soil is too acid, lime must be applied and since the vines are shallow-rooted, they will benefit from a thick layer of organic mulch.

Rainfall amount and reliability

Passion fruits of all the varieties require well-distributed rainfall of 900 mm to 2,000 mm per year. Excess rainfall causes poor fruit set and encourages diseases.

Altitude above the sea level

Passion fruit growths need an altitude of 1,200 m to 1,800 m above sea level east of the rift and up to 2,000 m above sea level west of the rift.

Temperature

The plant (Passiflora edulis) type thrives in regions with an optimum temperature in the range of 18 to 25 degree Celsius. The yellow variety thrives in areas experiencing about 30 degrees Celsius.

Passion farming with the use of simple irrigation system

On using simple drip irrigation system, the initial thing that the farmer must consider is the land preparation.

The purpose of these activities is to improve crop/plant growth and development.
Land preparation ensures that there is sufficient water, heat, oxygen, and other important soil nutrients.

This process will allow the soil to be more compressible to allow the penetration of the roots

After land preparation the process that follows is the planting. At the time of planting, make holes measuring 40centimeters wide and 45 centimetres deep spaced at 2 meters between plants and 2 meters between rows of the plants.

These spacing gives the irrigation technician to design the irrigation equipment like irrigation pipes, button drippers, irrigation connectors and the irrigation end caps.

Importance of simple irrigation on passion fruit farming

A drip irrigation system has plenty of benefits, which makes it a preferable option for the growth of passion fruits. The main advantages include:

Efficient water usage
Reduces weed growth
It helps save time
Helps produce healthier plants
Produces healthier plants
Cannot get disrupted by wind

Simple Irrigation equipment use in passion fruit farming.

These are the equipment that are used to supply water to the plants (passion fruit) and includes the following

Irrigation pipes

Irrigation HDPE pipes are the most considered to be the best choice for irrigation on the various project due to its high quality and reliability.

It made up of high density, polyethylene particles that are closely packed. Usually made up of high-pressure rate known as pressure normal (PN).

And of various sizes of polyethylene pipes available in the market for the passion fruit farming are ranging from 16 millimetres diameter-40 millimetres diameter .

These irrigation pipes (polyethylene) are also easy to install. The commonly used methods of installation used by professionals include vibration and plow open cut method installations.

hdpe pipes — Eunidrip irrigation HDPE pipe

Irrigation starter-connectors.

Starter connector is a plastic fitting that connects a main pipe with a 16 millimetres pipe to supply water to the individual passion fruit plants.

They come in different sizes, but most common starter-connector in the market is 16 mm (millimetre).

They come in different designs and colors but most starter-connectors are complete black or may have a blue color code.

Standard starter-connector can sustain a working pressure of up to 16 bars. Most of irrigation systems work at a pressure of three bars and below.

Irrigation starter connector

Button drippers

Button dripper is made of plastic, polyethylene, and is sold in packets or pieces. The wall thickness typically ranges from 1 mm–1.3 mm.

Thicker walled drippers are commonly used for permanent subsurface drip irrigation and thinner walled tapes for temporary type systems in high-value crops

Button dripper is well designed to discharge one litter of water per hour over 60 liters of water per hour. This discharge ensures water is efficiently and economically used.

The economical water budget is the major determinant of the production cost. This dictates the type of crop to be grown.

Button drippers

However, Broad leaved plants require much water as compared to small leaved plants. This will affect the button dripper water discharge capacity to be used.

Advantages of button drippers

Extensive land leveling is not required, drip irrigation can be employed in all landscapes;
Irrigation water can be used at a maximum efficiency level and water losses can be reduced to a minimum;
Soil conditions can be taken into account to a maximum extent and soil erosion risk due to irrigation water impact can be reduced to a minimum;
Fertilizer and nutrients can be used with high efficiency; as water is applied locally and leaching is reduced, fertilizer/nutrient loss is minimized (reduced risk of groundwater contamination);
Weed growth is reduced as water and nutrients are supplied only to the cultivated plant;
Positive impact on seed germination and yield development;
Low operational costs due to reduced labor requirement, in particular energy cost can be reduced as drip irrigation is operated with lower pressure than other irrigation methods.

Cart

Button dripper irrigation for avocados in Kenya.

Water used in Avocado trees in Kenya

Using button dripper irrigation for avocados in Kenya.

Button dripper irrigation for avocados in Kenya.

Advantages of button dripper irrigation for avocados in Kenya

Pressure compensated driplines

Avocado farming methods and practices

Management of button dripper irrigation for avocados in Kenya.

Management practices for button dripper irrigation:-

Salinity control using button dripper irrigation for avocados in Kenya

Fruit drop control in button dripper irrigation for avocados in Kenya

Fertilizer application using button dripper irrigation for avocados in Kenya

Pruning

For example, the avocado plant should:-

Pruning principles:-

Freeze protection

Grafting

Market regulations around avocado export.

Uses of avocadoes

Dam liners for sale in Kenya

The main factors to consider when choosing the type of dam liner to use are;

Advantages of dam liners for sale in Kenya

Use of dam liners in fish farming.

Water harvesting for irrigation using dam liners for sale in Kenya

How to size a water pan in relation to irrigation requirements

Things considered when designing reservoir

Eunidrip irrigation systems as a preferred dam liner supplier.

Dam liners for sale in Kenya advantages

Disadvantages

Environmental impact of collecting water using dam liners for sale in Kenya.

Water harvesting for irrigation using dam liners for sale in Kenya

How to size a water pan in relation to irrigation requirements

Popular Irrigation Pipes in Kenya

Polyethylene (PE) pipes

Galvanized iron pipes

cons

PROS

Polyvinyl chloride pipes (PVC)

Low-density polyethylene pipes

High-density polyethylene pipes

PVC lay flat hose

Suction pipes

Factors to consider when choosing quality irrigation pipes for crop farming.

Price of quality irrigation pipes for crop farming in Kenya:

How to repair quality irrigation pipes for crop farming

PVC pipes

HDPE pipes

PVC lay flat hoses

Quality irrigation pipes for crop farming layout

Topography

The plants to be grown

Size and shape of the farm

Irrigation system being used

Source of water

Description

Factors to consider when selecting the drip irrigation system design.

Types of crops

Nature of the land.

Suitable soils

Suitable irrigation water

Components of Drip irrigation system design.

Control head (Central Control).

The Auxiliary or Manifold pipe.

The Emitters.

The Specification of Emitters used in Drip Irrigation System design.

The operating principle of Drip irrigation system design.

The wetting patterns of drip irrigation emitters.

Specific problems associated with drip system of irrigation.

Emitters or drippers clogging effect.

Solutions to problems associated with emitters clogging in drip irrigation system.

Use of appropriate filtration system.

Bacteria Treatment

Chemical Treatment

Fertilizer Injection Systems

Operation Procedures of Injection Equipment

Advantages of drip irrigation system.

Disadvantages of drip irrigation systems.

Irrigation method for dragon fruit farming in Kenya

How to prepare land for drip irrigation for dragon fruit farming in Kenya