WATER DISTRIBUTION IN THE SOIL WITH MICRO-SPRINKLER ED 2
Abstract
This study was carried out with the objective to study the micro-sprinkler ED 2, under field conditions, such as the wetted surface area, wet bulb pattem into soil profile, and the application efficiency. The field work was conducted in an Eutrophic Regosol with Fragipan soil, and consisted in applying three volumes of water (300, 450 and 6001), with accompaniment of water distribution in the soil. The superficial ama wetted by the micro-sprinkler was 11.89, 12.79 and 13.43 m 2, for the respectives water volumes of 300, 450 and 600 liters. This micro-sprinIder showed high sensibility to wind speed. The analysis of water contents in the soil showed that the effective wet bulb reached the average depths of 8, 12 and 19 cm, and the wetting front reached a depth of 31,40 and 48 cm, for 300, 450 and 600 liters of water, respectively. Application efficiency had an average of 82.51% with an evaporation loss of 17.49%.
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