DOI: 10.36347/sjavs.2016.v03i03.013

Pages: 234-237

A field experiment was conducted for two consecutive seasons during 2010/2011 and 2011/2012 on the Demonstration Farm of the Faulty of Agriculture, University of Kassala at New Halfa. The objectives of study were to investigate the interactive effects of watering regime, nitrogen and organic manure on yield of wheat (Triticum aestivum L). The watering regime treatments were irrigation every 7, 14 and 21 days, and the nitrogen fertilizer levels were zero, 43, 86 kgN ha-1 without or with 4 tons of chicken manure ha-1. Irrespective to fertilizer application, grain yield was substantially reduced under prolonged watering interval, relative to frequent watering interval by 29.3%. While application of organic manure, high N level solely or together significantly increased grain yield, relative to their control treatments by 37.6%, 56.1% and 117%, respectively. Under frequent irrigation, addition of organic manure with high N level significantly increased grain yield by more than 120% relative to control treatment. However, the increase in grain yield was associated with significant increases in yield components (number of tillers m-2, number of grains spike-1 and 1000-grain weight). Also, the results showed that application of high N level and organic manure had positive effect on harvest index.