Manejo da água na produção integrada de coco anão no distrito de irrigação platô de Neópolis-SE.

Abstract

The national Coconut Integrated Yield Program — PICoco - establish technical standards for irrigation management of coconut crop. This work aims to characterize the irrigation management used by growers of dwarf green coconut at Platô de Neópolis Irrigation District, Sergipe State, Brazil, in order to accomplish this management with the PICoco. Water balance was monitored in two sub mains using a micro irrigation system, named PI (Integrated Production) and PC (Conventional Production). The crop evapotranspiration in the sub mains was estimated by using Class A pan evaporation with proper tank and crop coefficients. Water supply was measured inlet each sub main using a Woltman flow meter and rainfall was measured by a local meteorological station. Soil water potential was measured using tensiometric method. It was concluded that the present irrigation management results in a critical soil water potential condition to coconut tree in high part of the dry season for monitored soil profile.