ESTIMATIVA DA DEMANDA HÍDRICA DE DIFERENTES CULTURAS NO PERÍMETRO IRRIGADO PONTAL SUL

Abstract

The present work aimed to determine the water demand for different crops in the Pontal Sul Irrigation Scheme and to verify if the water depth  supplied is capable to attend crop water demands; to identify when and which scenario the water demand is maximum; and to define which scenarios based on different crops and on  water availability can be met according to the pumping capacity of the irrigation scheme. To achieve these objectives, data surveys, bibliographic studies, generation of agricultural scenarios and demand estimates were carried out for the Pontal Sul Irrigation Scheme. According to the scenarios generated, the Pontal Sul irrigated project presents, in part, data that favor the overestimation of water values ​​to be provided, but it also present problems related to water supply for crops in scenarios and conditions of maximum crop requirements. Thus, this study shows the need for a previous study and a alternative for planning for cropping and the use of irrigation systems in Pontal Sul Irrigation Scheme.