Growth and yield response of wheat to irrigation at different growing stages

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Research Paper 01/01/2015
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Growth and yield response of wheat to irrigation at different growing stages

S. Islam, Md. Shahidul Islam, M.J. Uddin, H. Mehraj, AFM Jamal Uddin
Int. J. Agron. Agri. Res.6( 1), 70-76, January 2015.
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An experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University, Bangladesh during November 2011 to March 2012 to study the growth and yield of wheat to irrigation stages. Four irrigation stages viz. I0: No irrigation; I1: Irrigation at crown root initiation (CRI) stage (18 DAS); I2: Irrigation at pre-flowering stage (45 DAS) and I3: Irrigation at both CRI and pre-flowering stage were used following Randomized Complete Block Design with three replications. Maximum number of tiller/hill (5.2), CGR (6.7 gm-2day-1), RGR (0.03 gg-1day-1), dry matter content (28.7%), number of spikes/hill (4.5), number of spikelets/spike (19.0), ear length (17.5), filled grains/spike (30.8), total grains/spike (32.9), weight of 1000-grains (47.1 g), grain yield (3.9 tha-1), straw yield (4.9 tha -1), biological yield (8.8 tha– 1) and harvest index (45.9%) were found from I3 whereas minimum from I0. On the other hand, early flowering (70.6 days), maturity (107.2 days) and minimum number of unfilled grains/spike (2.1) were also found from I3.


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