DripTech Eco-Flow | Irrigation equipment in Kenya
How irrigation zones are designed
Irrigation zones divide a field into manageable sections that can be watered with the available flow and pressure. Good zoning helps control operating demand and makes troubleshooting and maintenance easier.
Why divide a farm into zones?
A water source or pump may not supply the entire field at the required flow and pressure simultaneously. Zones allow the system to operate sections in sequence and can account for differences in crop, terrain or equipment.
Zoning is not simply splitting acreage equally. The flow and pressure requirements of each zone should be compatible with the supply and hydraulic design.
Factors that affect zone layout
- Emitter or sprinkler flow and spacing
- Number of laterals or sprinklers operating together
- Available pump flow and pressure at the duty point
- Pipe diameters, route lengths and elevation
- Crop blocks, soil differences and irrigation timing
- Valve location, access, flushing and control requirements
Common zoning errors
- Operating too many devices at once and losing pressure
- Combining zones with very different hydraulic requirements without checking
- Making zones difficult to isolate or maintain
- Ignoring elevation changes and friction losses
- Failing to label valves and document the operating sequence
What a zone schedule should show
A practical schedule identifies each zone, its area or crop block, expected flow, required operating pressure, control valve and sequence. These values should come from the system design and component specifications, not guesswork.