Energy requirements and yield of drip irrigated potato

摘要

Potato yield and quality are functions of the amount of irrigation water. Irrigation system is one of the main parameters affecting irrigation efficiency, energy requirements and total irrigation cost. Field experiments for two seasons (1999/2000) and (2000/2001), were carried out in Bosaily Experimental Farm, Beheira Governorate, in order to evaluate the performance of surface and subsurface drip irrigation systems. Two different drip lines were used as surface and subsurface irrigation. Three water requirement levels (75%, 100%, 125% from Et-o) were applied to find out the relationship between drip system and its effect on water use efficiency, energy consumption rate and cost.