Growth and Yield Response of Wheat (Triticum aestivum L.) to Nitrogen Application at Different Growth Stages
Response of wheat (Triticum aestivum L.) cultivar Inqulab-91 to nitrogen application of 120 kg ha -1 at different growth stages (full at sowing, full at tillering, half at sowing and half at tillering, half at sowing and half at flowering, half at tillering and half at flowering and 1/3 at sowing, 1/3 at tillering and 1/3 at flowering) was studied under field conditions during 1993-94. Grain yield and various yield components like plant height, total number of tillers m -2, fertile tillers m -2, number of grains per spike, 1000-grain weight and harvest index were affected significantly by nitrogen application at different growth stages. Maximum grain yield of 84.31 q ha -1 was obtained where nitrogen was applied in three equal splits (1/3 at sowing, 1/3 at tillering and 1/3 at flowering) and it was followed by full at tillering and full at sowing which yielded 80.47 q ha -1 and 80.07 q ha -1, respectively. The nitrogen in three equal splits (1/3 at sowing, 1/3 at tillering and 1/3 at flowering) should be applied for getting higher grain yield of wheat in Faisalabad conditions.
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