The minimum pressure range on which the drip irrigation systems work 10-30 pounds per square inch. This pressure is an average standard pressure for the design of all drip irrigators. The general rule of thumb is to install emitters under 80% of the leaf canopy with a spacing of 600mm. If the land has permeable soil, then the minimum spacing should be around 300 to 450 mm. Depending of the discharge of water from the pipe’s emitters spacing is decided for each type of soil. 4 liters per hour emitters need a spacing of 60 cm for coarse soil, 1 m for medium soil and 1.3 m for fine soil. Similarly, 2 liters per hour emitters are spaced 30 cm for coarse soil, 60 cm for medium soil and 1 m for fine soil.
How much pressure is needed for drip irrigation and what should be the spacing of emitters in the system?
