How To Install Rain Hose Kits

Grekkon Limited’s manual on how to install rain hose kits in Kenya is an easy to read step by step guide. It details every aspect of rain pipe assembly in the farm to provide understanding to farmers. As the pioneer of rain hose kits in Kenya, we are keen to that farmers receive the full benefit of rain pipe irrigation

What is the price of a rain hose irrigation kit?

Rain hose pipes work under high gravity pressure (from 6M or 0.6bar), and with high volume water pumps. The discharge rate of the water pump is from 40 cubic litres per hour. These water pumps are surface solar, electric, petrol or diesel powered    

A well connected rain hose pipe

How To Install Rain Hose Kits

1. Trench where the poly vinyl chloride (PVC) main line will be laid. This is not necessary for the high density polyethylene (HDPE) which are surface pipes.  PVC pipes are sub-surface pipes because they have no UV-treatment, and will thus degrade easily under the sun. HDPE pipes have UV treatment and will be surface pipes
2. Connect the  PVC or  (HDPE) main line to the water pump or high tank. This pipe evacuates water from the source to the farm and is the largest in diameter. The larger the pipe diameter, the more the water it delivers. .
3. Join the HDPE or PVC sub-main line to the main line. The sub-main line is smaller in diameter, and so carries less water. It is joined to the main line through PVC or HDPE accessories such as; tees, elbows, saddle clamps, adaptors or valve sockets
4. Connect the rain pipe to the sub-main line or the main line where a sub-main line does not exist. This is done with a rain hose connector or a saddle clamp
5. Spread the rain hose along the length, and close the terminal end with an end cap
6. Connect one rain pipe to another with a connector

 Rain hose fittings from left to right: end cap, connector, rubber, and ball valve

A drilling tool is the only tool used when installing a rain hose kit. This is to create an opening on the main or sub-main line to insert the rain pipe ball valve

How To Install rain Hose Kits

Rain hose irrigation system requirements

• The system requires a pressure head of 30M, and above
• When using a water pump to power the rain hose irrigation kit, the discharge rate should be from 45 cubic litres per hour
• The rate of water discharge is determined by the diameter size, and number of pores on the rain pipe. For instance, a rain pipe with 5 holes per cluster discharges less water than the one with 7 holes in a cluster
• It irrigates in opposite directions at a radius of 3M for the 32mm pipe, 5M for the 40mm pipe, and 7M for the 50mm pipe
• The vertical height of this water jet is 1M

Rain Hose Versus Drip Irrigation

1. Rain pipes irrigate in an overhead fashion, drip lines irrigate to the root zone
2. Drip tapes are water efficient, rain hose kits require large water volume
3. Rain pipes have a higher pressure requirement than drip pipes
4. Drip lines have emitters, while rain hose kits have pores done with nano technology
5. The discharge rate for drip lines is 1.2 to 4 litres per hour per emitter, while the rain hose pore’s is from 7 litres per hour per emitter
6. The cost of a drip kit installation per acre is from Kes 100,000, while the rain hose is from Kes 75,000
7. The rain hose pipe’s minimum diameter is 25mm/ 3/4″, while drip tape’s is 8mm

Advantages Of A Rain Hose

• water saving and cost effective
• It is easy to install, use and maintain
• Ran hose nanotechnology punched holes are less prone to clogging
• It is used in a broad range of crops
• Rain hose pipes are light and easy to move about
• It irrigates uniformly
• It works under both low gravity and high water pump pressure

Rain hose irrigation system is for the following areas and on these crops

1. Crop nurseries; vegetables, fruit trees, forestry
2. Short vegetable crops (knee-high and below); cabbage, lettuce, broccoli, kales, spinach, collards, broad beans, carrot, strawberry, and others
3. Pasture; grass and legumes

When choosing the crop to irrigate using this method, consider its susceptibility to foliage fungal infections predisposed by leaf surface wetness. Tomato, potato, peppers, peas, green beans, and chili easily succumb to foliage fungal infections when overhead or a rain hose system is used for a long time

 Pasture irrigation with a rain hose

How To Install Rain hose Kits

FAQs

a. What is the difference between a rain hose irrigation system and a sprinkler system?

• The technology. The rain pipe irrigation system is designed using nano technology
• The mode of spray. A sprinkler sprays its water in one direction, a rain hose pipe sprays in 3 directions (vertically, horizontally, and diagonally)
• Placement. A sprinkler is placed upright on the surface or sub-surface (for pop up sprinklers). A rain hose is laid on the ground

b.  What is the pressure in a rain pipe?

The minimum operating pressure is 30M head / 3 bars

c. What is the spacing for rain hose irrigation?

The distance from one rain pipe to another is from 1.5M depending on the operating pressure, and pipe diameter

Grekkon limited is the largest supplier and installer of rain hose irrigation systems in Kenya, and in the east and central Africa region

Pixie Orange Farming And Irrigation

Pixie orange farming and irrigation in Kenya is a high investment, high returns farming venture. Pixies originate from California, USA where they were developed as a cross between oranges and tangerines. They are yellow-orange in colour, sweet and seedless fruits rich in vitamin C. They boost the immune system and increase collagen production which is great for the skin.  In this piece, we answer commonly asked questions on pixie orange farming and irrigation by growers in Africa

1.How do you grow pixie oranges in Kenya?

They grow in most soils, but the best are deep (at least 18 inches or 42 cm deep) fertile sandy loams with a pH range of 6.5 – 7.3

Ripe pixie oranges on a tree

2. How do you plant pixie oranges?

The dimensions of the planting holes are 2ft x 2ft x 2ft. This allows for water conservation and deep root penetration as the tree grows. mix the top soil thoroughly with well decomposed manure especially in weak soils

3. What is the spacing for pixies?

Row to row 5M, plant to plant 4M to give an average population of 200 plants per acre. A mature full-sized tree tree is 6M – 9M tall, and equally wide with an extensive root system

A mature well spaced pixie orange crop

4. How long do pixie oranges take to grow out?

Pixie oranges take 2 years to their first fruiting season, but full maturity is between 3 -5 years

4. How many oranges will one tree produce?

The first fruits (30 – 50 fruits) come in the second year, then 250 -300 in the third to fifth years. By the eighth year, the tree bears 500 -600 fruits annually. To produce this commercial quantity all year round, irrigation must be undertaken

5. How many pixie orange trees per acre?

200 trees on average

How To Irrigate Pixie Oranges In Kenya

Pixie oranges require a high amount of water to grow because they are ever green. Under rain fed production, it will be at least 1,000mm of rain annually. However, to produce commercially, irrigation will be done to supplement rain. A tree will have 20 litres at planting, and thereafter, ensure that the soil is consistently moist, but not soggy. The root system must not be allowed to dry out, and neither should there be standing water. Irrigation is at the root zone, away from the trunk

Pixie Orange Farming And Irrigation

Methods

I. Sprinkler Irrigation

Micro sprinklers at the base of the plant are the most efficient or all overhead irrigation methods. Micro sprinklers are low-pressure, low to medium volume irrigation equipment that deliver water directly to the crop root zone. They provide full scale surface irrigation, and localised watering of trees

Micro sprinklers installed by Grekkon Limited in an orchard

II. Button drippers

This is the most water conserving and efficient irrigation system. The water loss to evaporation is less than that of micro-sprinklers, and it requires lower pressure to operate

A button drippers system installed by Grekkon Limited at work in a newly established fruit farm