Author(s):

Akansha Raj, CS Singh, Arvind Kumar Singh, AK Singh and SK Singh

Abstract: A field experiment was conducted during kharif season of 2014 at Birsa Agricultural University, Ranchi, Jharkhand to evaluate the performance of maize hybrids under different nutrient management practices. The experiment was laid out in split plot design with 6 maize hybrids (PMH-1, PMH-3, CMH 08-350, CMH 08-287, CMH 08-292 and HQPM-1) in main plot and 3 nutrient management practices (recommended dose of fertilizer, site specific nutrient management through nutrient expert and farmer fertilizer practice) in subplot replicated thrice. The morpho-physiological analysis of growth and yield of maize revealed that site specific nutrient management manifested significantly higher plant height, leaf area index, dry matter accumulation, crop growth rate, relative growth rate, net assimilation rate, cob length, cob girth, number of grains/row, number of grains row/cob, 1000 grain weight and days to maturity resulting in significantly higher grain and stover yield over recommended dose of fertilizer and farmers fertilizer practice. The site specific nutrient management brought significant reduction in anthesis-silking interval and bareness percentage over recommended dose of fertilizer and farmer fertilizer practice. Among maize hybrids, CMH 08-350 being comparable to CMH 08-292 produced significantly higher leaf area index, dry matter accumulation, crop growth rate, relative growth rate, net assimilation rate, cob length, cob girth, number of grains/row and number of grains row/cob resulting in significantly higher grain and stover yield over other maize hybrids while, maize hybrid CMH 08-350 exhibited the lowest anthesis-silking interval. The plant height was found highest with maize hybrid CMH 08-292 while, the bareness percentage was found lowest with maize hybrid PMH-1. The maize hybrid HQPM-1 exhibited maximum days to maturity which was significantly superior over other hybrids.

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