Vol. 16 No. 1
Effect of different nutrient management practices on growth, grain yield, production economics, soil nutrient availability of transplanted kharif rice (Oryza sativa L.) and correlation studies
Abstract: A field experiment was conducted to study the “Effect of different nutrient management practices on growth, grain yield, production economics and soil nutrient availability in transplanted rice (Oryza sativa L.) and correlation” during kharif -2016 and 2017 at Regional Research Station, Gayeshpur of Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal. The treatments of different nutrient management practices were T1- Control, T2-N60, T3-N60P30, T4-N60P30K30(RDF: Recommended dose of fertilizer), T5-N80P40K40, T6-N60P30K30 + ZnSO4 @ 25 kg ha-1, T7-75% RDF+25%MC and T8-50%MC+50%VC, and laid out in Randomized Block Design (RBD) replicated three times. The results revealed that rice plot fertilized with the higher dose of NPK @ 80, 40, 40 recorded highest plant height, LAI, dry matter accumulation and available nutrient status of the soil but the combination of NPK @ 60:30:30 (kg ha-1) + ZnSO4 @ 25 kg ha-1 recorded the highest tiller number and seed yield of 3.96 t ha-1 which was 6.73 per cent more yield (3.71 t ha-1) than the treatment T5 (N80P40K40).The result can be more specifically ascertained by the correlation analysis where linear association between dry matter harvest and seed yield (0.836) and other yield attributing characters are distinct. On the other hand, effective tillers (0.958), panicle length (0.861) and weight (0.827), no. of filled grains (0.884) panicle-1, test weight (0.969) registered highly significant positive phenotypic correlation with seed yield as because seed yield is a complex character and it is the end product of association and interaction among all the traits.
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