Low-Pressure, Mechanically-Moved Irrigation Systems for Cotton

A 550 -foot center pivot system was installed in the first field (No. E -1). Two sections 20 rows wide were irrigated using low pressure spray nozzles mounted about 5 feet above the soil surface on drop lines . The rest of the system was irrigated with furrow drop lines. These consisted of a flow control nozzle, and a plastic tube which delivered the water directly to the bottom of every other furrow. Checks or small dams were placed 6 -10 feet apart in every furrow. These held the irrigationwater so no runoff would occur and a uniform water distribution obtained.