Vol. 15 No. 3
Standardization of integrated nutrient management for aromatic Gobindabhog rice in Gangetic alluvial region of West Bengal
A field experiment was conducted at ā€˜Cā€™ Block Farm of Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, India to standardize the integrated nutrient management for scented Gobindabhog rice during kharif (wet) season of 2010 and 2011. The types and doses of organic manures (O1ā€“O5) were assigned in main plots and levels of chemical fertilizers (F1ā€“F3) in sub-plots in a split-plot design. The treatments could exert significant influence on growth attributes compared to unmanured control (O1), where the use of FYM and mustard cake resulted in taller plants, greater tiller production, foliage growth and dry matter accumulation of Gobindabhog rice through out the cropping period. Although the application of mustard cake (@ 0.25 or 0.50 t ha-1) was found better toward the production of panicles (306.5 and 303.1 m-2), but the use of FYM @ 5 t ha-1 resulted in maximum number of filled grains (143.6 panicle-1) and grain yield (2.93 t ha-1) and were at par with mustard cake @ 0.25 t ha-1 (141.5 m-2 and 2 .88 t ha-1). The grain yield and protein content were significantly improved with increasing levels of NPK fertilizers from N20P10K10 kg ha-1 (2.66 t ha-1 and 7.22%) to N30P15K15 kg ha-1 (2.73 t ha-1 and 7.512%). Among treatment combinations, the integrated nutrient management dose of FYM @ 5 t ha-1 + N40P20K20 kg ha-1 could be adopted for Gobindabhog rice for higher grain yield (3.01 t ha-1 ), protein content (7.75%), net profit (Rs. 29100 ha-1, B:C ratio (2.05) and better soil residual status (+20.8 kg N, +13.9 kg P and -9.4 kg K ha-1) or alternatively mustard cake @ 0.25 t ha-1 + N20P10K10 kg ha-1 might be another option of nutrient management in gangetic alluvial region of West Bengal.
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