Effect of Irrigation System and Irrigation Interval on Seed Yield and Water Productivity of two Soybeans (Glycine max L. Merr.) Cultivars under Drip and Furrow Irrigation in Eastern Sudan

Water stress is one of the limiting factors soybean yield in eastern Sudan. The objective this study was to obtain basic information on cultivation using two irrigation systems This examined leaf area index, and water productivity (IWP) response cultivars: Sudan1 (V1) Sudan2 (V2) under drip (DS1) furrow (DS2) systems. experiment carried out summer seasons 2016 2017. Three intervals, every 4, 8 12 days designated as W1, W2 W3, respectively, were used. A randomized complete block design used strip-split plot arrangement with three replications. data statistically analyzed STATISTICS 10; mean separation computed LSD. results showed that cultivar gave higher index values four interval particularly system. Four treatment increased seeds by more than 2.5 % relative 34 interval, average for both seasons. Drip system significantly (P ≤ 0.05) IWP compared Highest obtained interval. Eight inhibited positive effect seed IWP. concludes irrigation, seasons, 20.5 irrigation. However, system, 25.6%