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Integrated nutrient management in rice (Oryza sativa)-wheat(Triticum aestivum) cropping system

Vijay Kumar, 0 P Singh & Virendra Kumar*Janta Vedic (PG) College, Baraut, Bagpat (U.?)

*Agronomy Division, Indian Agricultural Research Institute, New Delhi 110012

AbstractTo study the effect of organic manures and chemical fertilizers in rice under western Uttar Pradesh conditions a fieldexperiment was conducted at the research farm of Janta Vedic College, Baraut, District Bagpat (U.P.) during the rainy andwinter seasons of 2003-04 and 2004-05 with rice-wheat cropping system Incorporation of organic manures (FYM, poultrymanure and FYM+ poultry manure) significantly recorded higher crop growth, yield and yield attributes of rice as comparedto control. Org~nic manures increased the mean grain yield of rice by 16.1 to 18.8% over control. However, farm yard manure,oultry manure and FYM + poultry manure produced growth and yield of rice at par. Results revealed that the combined use

of farm yard and poultry manure fetched maximum mean net returns of Rs 14,755 in rice cultivation. In reference'to 2hemicalfertilizers the maximum mean grain yield of rice (45.4 q/ha) was observed with N 120P6OZn25kg/ha. Based ,Din .two· yearsexperiments, maximum mean nitrogen uptake (94.9 kg/ha) was recorded under combined use of farm yard and poultry m~nures.Incorporation of organic manures caused improvement in organic carbon and available nitrogen content of soil aftercr~p'h'arvestas compared to control

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