1 Borivoj Pejić, PhD, Associated Profesor, Ksenija Mačkić, PhD, Teaching Assistant, Srdjan Pavković, MS, Branka LJevnaić-Mašić, PhD, Associated Profesor, University of Novi Sad, Faculty of Agriculture, Sq. Dositej Obradović 8, 21000 Novi Sad, Serbia
2 Miroljub Aksić, PhD, Associated Profesor, University of Kosovska Mitrovica, Faculty of Agriculture, Jelene Anžujske bb, 43500 Kosovska Mitrovica, Serbia
3 Jelica Gvozdanović-Varga, PhD, Senior Research Associate, Institute of Field and Vegetable Crops, Novi Sad, Maksima Gorkog 30, 21000 Novi Sad, Serbia.
The objective of the study, conducted in Vojvodina a northern part of the Serbia Republic, was to analyse the effect of drip irrigation on yield, evapotranspiration and water productivity of watermelon (Cirullus lanatus Thunb.) grown with plasticulture. Irrigation was scheduled on the basis of water balance method. Daily evapotranspiration was computed using the reference evapotranspiration and crop coefficient. The yield of watermelon in irrigation conditions (37,28 t/ha) was significantly higher compared to non irrigated (9,98 t/ha). Water used on evapotranspiration in irrigation conditions was 398 mm and 117 mm on non irrigated variant. The crop yield response factor of 1,04 for the whole growing season reveals that relative yield decrease was nearly equal to the rate of evapotranspiration deficit. The values of irrigation water use efficiency and evapotranspiration water use efficiency were 9,93 kg/m3 and 10,29 kg/m3 respectively. The determined results could be used as a good platform for watermelon growers in the region, in terms of improvement of the optimum utilization of irrigation water.
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