EFFICIENCY AND UNIFORMITY OF AN SUBSURFACE DRIP IRRIGATION SYSTEM IN SUGARCANE CROP

Agricultural productivity in irrigated areas depends on several factors, including the design and maintenance of irrigation systems. Excessive or insufficient applications water affect plant growth development, hence agricultural productivity. For this reason, evaluation system is essential to avoid loss during application. This study aimed evaluate efficiency uniformity a subsurface drip sugarcane crops an area company Usina Coruripe, Alagoas, Brazil. data collection, flow rates were obtained four points along lateral line, first dripper, drippers located at 1/3 2/3 line length, last dripper each operational unit project. In row, emitters evaluated, totalizing 16 emitters, using chronometer, collectors, measuring cylinder for collection. these volume was collected 3 minutes, with three repetitions. Christiansen's coefficient, distribution statistical Hart's application estimated. The considered excellent uniformity. classified as acceptable, average value 88.9%. However, despite being periodic evaluations are recommended.