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EFFECT OF GENOTYPES AND NITROGEN LEVELS ON PRODUCTION POTENTIAL OF MAIZE (ZEA MAYS L.) UNDER INDO-GANGATIC PLAIN ZONE OF WESTERN U.P.

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Author(s): PRADEEP SINGH | N. S. RANA | U. N. SHUKLA | SMITA SINGH | RAKESH KUMAR | KAUSHAL KUMAR

Journal: The Bioscan
ISSN 0973-7049

Volume: 8;
Issue: 3;
Start page: 777;
Date: 2013;
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Keywords: GENOTYPES | MAIZE | NITROGEN LEVELS | YIELD

ABSTRACT
Among genotypes, Dekalb 900 M Gold had significantly higher yield attributes viz. cobs/plant, coblength (cm), grains/row, grains/cob, 1000 grain weight, ten cobs weight, grain weight/ten cobs, shellingpercentage, grain yield (6340 kg/ha), stover yield (8550 kg/ha), benefit: cost ratio (2.0), crop profitability(329.47 /ha/day) and crop productivity (62.35 kg/ha/day). Crop fertilized with 160 kg N/ha registeredsignificantly higher yield attributes viz. cob length, cob girth, grain rows/cob, grains/row, grains/cob,1000 grain weight, ten cobs weight, grain weight/ten cobs, shelling percentage, grain yield (6240 kg/ha) and stover yield over 40 kg N/ha, but it was at par with 120 N kg/ha. However, the highest benefit:cost ratio (2.0), crop profitability (322.42/ha/day) and crop productivity (61.76 kg/ha/day) with theapplication of 120 kg N/ha closely followed by 160 kg N/ha. Harvest index, grain rows/cobs andcobs girth did not influenced by any of the genotypes and N levels.
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