ABSTRACT
This study was carried out with the sprinkle irrigation system of the Barreiras irrigation district, Petrolândia-PE. Two different evaluations were performed. In the first one three conventional lots at different points along the main pipie and in the second an additional sprinkler of "drag line" type was tested. In the first evaluation it was found that the working pressure showed a variation of 44.8% (243 to 362kPa) compared to the recommended pressure (250kPa). The mean wind speed at the time of the test was 1.88 + 1.31m.s-1. The Christiansen Uniformity Coefficient (CUC) was around 86.00%. The mean irrigation efficiency of the system was 54.27% + 18.23%, with the best result (68.68%) obtained under the working pressure of 293kPa. In the second one the irrigation system showed a large improvement at a pressure of 250kPa.
Key words:
technical evaluation; irrigation system; sprinkle