This study has been carried out in alluvial area in the semi-arid zone of Pernambuco State, Brazil, subject to salinisation, aiming to guide local farmers to install, evaluate and to manage micro sprinkler irrigation systems, raising Midori cabbage cultivar. Adopting the area percentage of wetted soli 100% the sub units have been evaluated regarding the discharge and pressure variation, and also coefficients of uniformity (CU) and efficiency of application coefficient (EA). The irrigation uniformity was high, greater than 93%. The efficiency of application coefficient could be classified as good, exhibiting values greater than 80%. The system was then used to local scale irrigation, adopting a "Class A" tank as a management control, during a 75 days period and conducted by a local farmer. Continuous leaching has been implemented throughout the study, for salinity control. Average leaching coefficient equal to 1,21 with standard deviation of 0,45 has been adopted, for the period with no rainfall. Upward gradients have prevailed, with average of 1,14 and 0,21 standard deviation, preventing capillary flow to occur. A stable electrical conductivity in the saturated zone has been observed. Soil saturation has not been recorded in the root zone.
alluvial areas; micro sprinkler; salinity management
