Effect of irrigation scheduling and nutrients on yield and its components of wheat crop

Abstract

    Field experiment was conducted during winter season 2021-2022 at karthiya area / Kut district in Wasit Province, Iraq. Therefore, the aim of this study was to implement the irrigation scheduling and foliar application of nutrients on the yield and its components of wheat (IPA 99). The study carried out in randomized complete block design with split block arrangements and three replications. The main plots were for irrigation scheduling calculated based on depth of irrigation water and the cumulative evaporation from a Class A as follows: Depth of irrigation water at 40 % of available, depth of irrigation water at 60 % of available and depth of irrigation water at 80 % of available. The sub plots were for foliar application of nutrients included control, foliar spray of iron and zinc was added with the elongation and booting stages (100 Mg.L^-1) and foliar spray of potassium was added with the elongation and booting stages (3000 Mg.L^-1). The results indicated that the highest No. of spike, No. of spikelets per spike, 1000-grain weight (g), grains yield, biological yield and harvest index were found at depth of irrigation water at 40 % of available (362.80, 21.38, 32.49 g, 4.80 t ha^-1, 15.00 t ha^-1 and 32.06) respectively. Also the highest were found at foliar spray of potassium 3000 Mg.L^-1 (20.84, 4.40 t ha^-1, 14.60 t ha^-1 and 29.94) respectively, except No. of spike and 1000-grain weight not significant affected.