Vol. 3 No. 2
Growth and yield of wheat crop as influenced by nitrogen levels, previous rainy season legumes and their recycling in the gangetic alluvial soil of West Bengal.
Author(s): A. P. PATRA; P. GHOSH; A. BISWAS; S. S. NAYEK; S. K. GHOSH AND M. SAHA
Abstract: An experiment was conducted at the Instructional Farm of Bidhan Chandra Krishi Viswavidyalaya, Jaguli, Nadia, West Bengal (India) for three consecutive years the upland of Gangetic alluvial soil (entisol) in split plot design, with rainy season crops greengram, blackgram, soybean, groundnut, ricebean, cowpea and rice with or without incorporation of their straw/stover as mainplot treatments; and three levels of nitrogen (0, 60 and 120 kg N ha-1) on wheat as subplot treatments. Shoot growth of wheat was higher due to residual effect of ricebean fodder, blackgram and groundnut; LAI, LAD and CGR were higher in ricebean and blackgram plot than rice. These parameters were improved due to incorporation of stover or nitrogen levels. Number of effective tillers m-2 and grain spike-1 of wheat augmented in the plots of ricebean, blackgram, soybean and groundnut over rice, and were improved due to incorporation of their stover or direct effect of N. Grain yield of wheat was the highest due to residual effect of ricebean fodder, followed by blackgram, groundnut and soybean and was augmented due to soil incorporation of stover or increasing levels of nitrogen.
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