Impact of irrigation scheduling and nutrient management on growth, yield and water use efficiency of wheat
2012
Kanwal, A.
Water and nutrients are the most important yield limiting factor in wheat (Triticum aestivurn L.). To optimize water and the nutrients in the crop a field study was carried out at Agronomic Research farm, UAF during wheat growing season 2011-12. Four irrigation regimes were randomized in main plots and three levels of nutrients (NPK) were randomized in subplots. Therefore experiment was laid out in split plot design with three replicates. A wheat cultivar Sehar-2006 was planted on November 20, 2011. The net plot size was 1.2 x 6 m. The results illustrated that application of irrigation water at tillering stage, stem elongation stage, booting stage and grain formation stages with fertilizer, at the rate of 160: 120: 80 kg per ha N: P: K, respectively gave best results. At this level maximum plant height (100 cm), leaf area index: (5.69), crop growth rate (10.06 g m-2 d-1), productive tillers m-2 (326). 1000-grain weight (42.3 g) and grain yield (3086 kg per ha) were achieved. The grain yield also showed significant and positive correlation with yield components. Therefore wheat crop should be irrigated at tillering, stem elongation, booting and grain formation stages with application of Nutrient N: P: K at the rate of 160: 120: 80 kg per ha, respectively during the growing season under semi-arid conditions.
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