الفهرس 
WATER USE EFFICIENCY OF SOYBEAN UNDER DIFFERENT TILLAGE AND IRRIGATION METHODS
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Abstract
Two field studies were carried out during two growing seasons of 2012 and 2013 at the Water Requirements Research Station, Water Management Research Institute, Kafer El-Sheikh Governorate. The study aimed to compare two irrigation methods, surge (SI) and alternate (AI) with traditional furrow irrigation method (FI) in relation to two tillage systems, conventional (CT) and no-tillage (NT) on water use efficiency and crop yield production of soybean. In both seasons, the lowest amount of irrigation water was applied with AI treatments, whereas, the highest amount of irrigation water was applied with FI treatments.The irrigation water amounts were saved by using AI and SI methods. The AI and SI saved about 29.0 % and 15.0 % of water applied in comparison with FI under CT and NT systems. Surge and alternative irrigation prove to be water saving methods.Irrigation water productivity (IWP) and crop water use efficiency (CWUE) were higher when applying AI compared to SI and FI under both tillage systems. Surge irrigation had the potential to improve irrigation application efficiency (IAE) followed by AI compared to FI. The highest seed yield and yield attributes were obtained with FI followed by SI and AI in both seasons, respectively