Irrigação pressurizada na cultura da banana no Projeto Gorutuba. I. Manejo da irrigação.

Abstract

This work had the purpose to evaluated the management of the banana crop in the Gorutuba project. We analysed eight irrigated areas by microsprinkler, minisprinkler and under-tree sprinkler. We determined the phisical-hidric parameters of the soil, characteristics of the water application and the hydric deficit in the soil by the moment of the irrigation. We verified the excess of the water application and the superficial run-off in the great part of the parcels of the ground evaluated. We observed an irrigation management without a systems of the water depth control, inplicating in an error of the depth of irrigation for all the parcels of the ground, in excess for 62,5% and inferior of the necessity in 37,5% of the cases. Even in the systems with daily irrigation, the depth applied exceed the evapotranspiration of the crop in the majority of the evaluated cases.