18 Feb Water pumps
Water pumps; choosing pumps the right way
When choosing the right water pumps in Kenya, these are the considerations a farmer must make.
- Daily water requirement. It will be based on acreage, crop and climatic zone. A farmer in Kitui will use a higher volume per hour pump than Nyandarua. A green beans farm in Kajiado will use a higher volume per hour pump than a forestry farm in Mau.
- Irrigation method. A farmer using raingun sprinklers directly powered by a pump, and one doing drip irrigation by gravity from a tank are likely to use different pumps. Assuming low ground elevation for both, the first one will go for a high volume, high pressure pump, the second one a high volume, low pressure water pump.
- Pressure. ‘Meter head’ pressure rating is used for water pumps in Kenya. Elevation, the irrigation system type and irrigation pipe sizes will determine pressure.
- Water source. Use a submersible solar or electric pump for depths beyond 7M. For shallower depths, use surface a pump.
5. Availability of power. Use solar pumps in remote regions with poor electricity reach and fuel access. However, solar water pumps in Kenya will not give as much water and pressure as electric, petrol or diesel water pumps. This will be a limitation.
6. Cost effectiveness. Petrol and diesel pumps in Kenya are least expensive to acquire. However, they are most expensive to run in the long run. Solar water pumps in Kenya are most expensive to install, but in the long-term are most cost effective.
These listed considerations inform a grower’s success or failure with a pump and the irrigation system in place. At Grekkon Limited, we advise on selection based on use.
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