Uniformidade e distribuição de água em sistema de aspersão linear movél e autopropelido na cultura da cana-de-açúcar em Alagoas

Abstract

With the high competitiveness of the agricultural sector, the use of irrigation becomes increasingly necessary to make profitable cultivation practices. Irrigation systems have a long useful life; therefore, energy costs and equipment maintenance must be considered, seeking to identify, through uniformity coefficients, possible problems in the application of water in irrigation systems. Thus, the objective of the present work was to evaluate the uniformity and distribution of water and the efficiency of the collected blade, in the sprinkler system by Linear and Self-Propelled in sugar cane, in the municipality of São Miguel Dos Campos - AL, aiming to optimize the performance of the systems, two types of uniformity coefficients were evaluated, the most known and used in the literature, which are: Christiansen Uniformity Coefficient (CUC), Distribution Uniformity Coefficient (CUD); Based on field surveys, the study for the linear presented CUC and CUD, with 89.19 and 81.19% respectively considered as good; as for the self-propelled one, it presented CUC and CUD being 82.21% and 78.52% respectively considered as good. In this way, it was possible to present to the producer, in this area, what are the operating conditions of his irrigation system, so that he can take the necessary measures to increase the percentage of efficiency in his system.

Key words: Irrigation, water use efficiency, Saccharum officinarum.