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Pakistan Journal of Biological Sciences
Year: 2003  |  Volume: 6  |  Issue: 8  |  Page No.: 732 - 734

Response of Irrigation Frequencies and Different Doses of N Fertilization on the Growth and Yield of Wheat

M.Z. Alam, M.S. Rahman, M.E. Haque, M.S. Hossain, M.A.K. Azad and M.R.H. Khan    

Abstract: The study was conducted to investigated the effect of irrigation and irrigation on growth and yield of wheat (cv. Kanchan). The results revealed that both the irrigation and nitrogen gave significant (p<0.05) effect on all studied growth parameters such as plant height (90.09 and 90.42 cm), number of tillers plant-1 (3.21 and 3.20), leaf area index (LAI) (1.37, 1.55 at 60 DAS and 3.73, 4.77 at 75 DAS), crop growth rate (CGR) (282.10, 333.13 mg day-1 plant-1 at 60-75 DAS and 158.99, 177.35 mg day-1 plant-1 at 75-90 DAS) and relative growth rate (RGR) (0.108, 0.1098 mg mg-1 day-1 at 60-75 DAS and 0.021, 0.022 mg mg-1 day-1 at 75-90 DAS). Among the yield contributing characters the number of effective tillers plant 1 (2.89 and 2.92), number of non effective tillers plant-1 (0.52 and 0.67), number of non-fertile spikelets spike-1 (2.44 and 2.51), grain yield (2.69 and 2.50 t ha-1) and harvest index (46.55 and 45.25%) were significantly influenced by irrigation as well as nitrogen level. The increments of grain yield mainly due to increase in number of effective tillers plant-1.

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