National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Field experiments were conducted during 2015-16 to gauge the fertilizer requirements for hybrid rice (cv. US-382) under Integrated Plant Nutrient Supply in Alluvial soils of Jorhat district of Assam. Following Ramamoorthy’s Inductive cum targeted yield model, the nutrient requirement per quintal of grain production and contribution from soil, fertilizer and vermicompost (CVC) were evaluated for hybrid rice. The per cent contribution of nutrients from soil (CS), fertilizer (CF) and vermicompost (CVC) were found to be 35.15, 48.65 and 26.50 for N, 47.17, 23.06 and 12.08 for P2O5 and 60.32, 55.68 and 28.69 for K2O respectively. The fertilizer prescription equations were developed and nomograms were formulated based on the equations for a range of soil test values and desired yield target for rice. Under NPK + VC @ 10.0 t ha -1, 30, 11, 28 kg ha-1 of fertilizer N, P2O5 and K2O, respectively could be saved for attaining yield target of 80 q ha-1 for hybrid rice as compared to NPK fertilizers alone.
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