Irrigation

Rain Hose Irrigation

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Grekkon Limited is the commercial pioneer of rain hose irrigation kits in east Africa, and is the largest supplier and installer of rain pipe systems in the region. This is done through the company’s 6 branches countrywide in Athi River, Nairobi, Kisumu, Eldoret, Nyeri, and Nyahururu. Before installing  a rain pipe irigation system in a farm, we conduct a site visit to assess:

  • the water volume available
  • crop acreage
  • crop type
  • land dimension
  • farm topography and lay out

This is the information that guides us on the design of the irrigation system to set up. If the water volume for instance is low, we recommend a more water efficient method such as drip irrigation. Alternatively, we’ll advice on a water harvesting technique to increase the water volume

 

What is a rain pipe irrigation system?

Rain hose systems are a new overhead way of watering crops intensely under moderate pressure. Each kit has a 100M long linear low density polyethylene (LLDPE) pipe as the main accessory. The rain pipe is sequentially perforated at determined intervals using Nanotechnology to create tiny holes from which crops are irrigated. This technology ensures even water flow from every hole

What is the price of a rain hose irrigation kit?

Diameter size
 Flow rate per 100M Price in KES
32mm or 1″ 13 cubic litres per hour KES 2,500
40mm or 1-1/4” 16 cubic litres per hour KES 5,800
50mm to 1-1/2″ 22 cubic litres per hour KES 6,800

What are the other components of a rain hose irrigation kit?

1. End-caps. They close the end of the pipe to prevent further water flow
2. Starter off-takes. They connect the rain pipe to the PVC or HDPE main line that supplies water to the rain hose from a water pump or highly elevated water tank
3. Pipe connectors. To connect one rain hose pipe to another
4. Mini valves. To control water flow to the rain hose pipe


The diameter of the pipe are; 25mm, 32mm, 40mm and 50mm. A grower chooses the preferred size based on crop water needs and area of irrigation. For instance, a farmer with 1 acre of the crop will comfortably water with the volume delivered through a 32mm rain hose pipe.

Another grower with 5 acres will better irrigate with a 50mm rain hose pipe. An acre of crop uses 1,000 meters of 25mm,  800 meters of 32mm rain hose pipes, 600M of 40mm pipes, and 400M of 50mm pipes

 

Rain pipe 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

 

Irrigating a newly transplanted crop with a rain hose pipe

How to assemble a rain hose irrigation system kit

1. Lay the mainline

This is the pipe delivering irrigation water to the farm from the pump. Your mainline will be larger in size than the rain hose pipe. So if your rain hose pipe is 1” for instance, use a 1.5” or 2″ main or sub mainline

2. Connect to the mainline

Make a 1” insertion on the mainline and attach the off-take connector. The size of the insertion is as per the size of your off-take

3. Rain pipe connection

Attach the rain hose pipe to the off-take connector

4. Hose to hose connection

Use the connector to attach one rain hose to another

5. End cap

Insert the end cap at the end of the hose

The rain hose is laid either on planting beds where they exist, or on level fields.Planting beds help retain mositure better

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

 

Rain Hose Irrigation 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 Rain Hose Irrigation

  • 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 pipe 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

 

Admin

Established in 2017, Grekkon Limited is a Kenyan agribusiness company. It specialises in the provision of; - Irrigation systems - Greenhouse construction - Dam liners installation - Water pumps - Solar dryers construction - Agriculture nets - Borehole drilling The company has operations offices in Nairobi, Mombasa, Kisumu, Eldoret, Nyeri, Meru, and Nyahururu

View Comments

  • Am so interested in Rain Hose kit and i want it, so do you also send it to other countries in Africa like Malawi because am staying in Malawi but i want it.

  • I want use for onion farming, is it possible?

    If not possible, what's the difference between it and rainfall that rains on onions and the onions that are grown during rainfall seasons

    • Good morning Peter,

      Our rain hose kit for sale in Kenya is used for onion ptoduction too. Speak to any of our branches nearest to you on how best to procure it

      Best regards,
      Customer Service

  • Can the system be moved from one location to another? Suppose I have 3 potions with different crops can I use one system interchangeably?

    • Good morning Daniel,

      Our rain hose kits in Kenya are portable. During installation, we create hydrants in the farm where the rain hose pipe is attached to irrigate a particular section, after which it is moved to the next hydrant to do the same

      Best regards,
      Customer Service

    • Good afternoon Ruth,

      We have the 50mm and 32mm diameter rain hose pipes for sale. Our commercial division will call you shortly

      Best regards,
      Customer Service

      • hae how many litres of water do i need to water 1/2 an acre of kales daily.with rainhorse irrigation?

  • Hi, I have 10 cent(4800 sq ft) home garden. Am thinking to do rain hose irrigation. Am planning to plant fruit trees, Timber trees, vegetable and flower plants. Ground water level is 15ft and motor pipe depth is 30ft. 1.5 hp motor is ok?? Is it ok to go for rain hose irrigation??

    • Good afternoon Kalidas,

      Our home garden rain hose irrigation kit will serve you. Besides the motor size, share with us the water pump specs (flow rate and head) for us to guide you on the suitability of your water pump with a rain hose irrigation kit

      Best regards,
      Customer Service

  • Good morning,
    Wish to use the rain hose irrigation. My farm is 10 acres - growing chilly( ABE, long cayenne, habanero), egg plant, tomatoes and cabbage, and green maize. Please advice the availability of it in uganda( Gulu).

    • Good morning Yobes,

      Our rain hose kits for sale in Uganda are available from either our Kidumu or Eldoret offices. Please share your contact number for us to reach you or call us on +254 759 000 911, or +254 711 895 635 in Kisumu and Eldoret respectively

      Best regards,
      Customer Service

    • Good morning Boniface,

      Our rain hose irrigation kits for sale in Kenya are available in our Mombasa office for supply to Lamu. Please share your number for us to reach you or call is in Mombasa on 0114 494 500

      Best regards,
      Customer Service

  • I did install rainhoses a week ago but the holes have started getting blocked and releasing very little water with feeble irregular jets. What can I do to remedy the situation

      • I would like to irrigate 1 acre of maize.
        What would be the cost of the pipes and installation.?
        My farm is in Mulot, Narok County.

        • Good evening Stanley,

          The cost of rain hose kits for 1 acre of maize is from Kes 65,000. If we include a petrol water pump (unless you have one), then the total cost is approximately Kes 100,000.

          For us to give you a detailed quote, we have to make a site assessment visit. Please share your contact number for us to reach you

          Best regards,
          Customer Service

  • What would it cost me to get somebody to Siaya Rarieda to advice me on the installation. I have popes and water pump.

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8 months ago

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