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Journal of Biological Sciences
Year: 2002  |  Volume: 2  |  Issue: 9  |  Page No.: 616 - 619

Effect of Nitrogen and its Methods of Application on Growth and Yield in Potato

M. Raihanul Islam Chowdhury, A.K.M. Golam Sarwar and A.M. Farooque    

Abstract: To find out the effect of nitrogen and the proper method of its application for maximizing the yield of potato, four doses of nitrogen, 0, 60, 120 and 180 kg ha-1, supplied as urea (containing 46% N), and five different methods of its application, were used. All top dressing operations were done in two installments of equal quantity at 30 and 50 days after planting (DAP) of potato tuber. All the parameters studied were differed significantly among the doses and methods of urea application. Application of urea @ 180 kg N ha -1 as 50% basal + 50% top dressing produced the highest yield among the doses and methods, and it was found to be the most cost effective (1.99). It might be concluded that 180 kg N ha -1 and split application (50% basal + 50% top dressing in two installment of 30 and 50 DAP) was superior to all other treatments to avoid the detrimental effect of urea on plant emergence, growth and tuber yield in Bangladesh.

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