Vol. 1 No. 1
Integrated Nutrient Management on the productivity of Brassica spp. and its residual effect on the succeeding green gram crop
Abstract: To evaluate the direct effect of manuring on the productivity of different varieties of rapeseed and mustard and its residual effect on succeeding green gram crop a field experiment was conducted at the Bidhan Chandra Krishi Viswa Vidyalaya during 2002-03 and 2003- 04. The experiment was laid out in a Factorial Randomised Blocl< Design with four varieties of rapeseed and mustard and four manurial treatments. The green gram (variety-B-1) was grown after rapeseed and mustard without fertilizer application. Results revealed that mustard varieties showed vigorous growth and long duration (1 10 days) as compared to rapeseed variety (90 days duratior:i). Higher number of siliqua/m2 (33.1 %), heavy seed weight (99.4%) and grain yield were recorded in mustard varieties than that of rapeseed variety whereas number of seed/siliqua (25.13) and oil content (38.11%) were more in rapeseed as compared to mustard (12.74, 37.85%, respectively). Maximum number of siliqua/m2 (4154), 1000 grain weight (4.99 g}, grain yield (1.48 Uha), net economic return (Rs. 21082/ha) anc:I return per rupee investment (Rs. 1.98) was obtained when mustard variety kesari-1 00 received 100% N/ha as straight fertilizer. Maximum grain yield of green gram was recorded (127 kg/ha) where mustard variety Swarna received 25% N as straight fertilizer along with 75% N as FYM.
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