VEGETOS: An International Journal of Plant ResearchOnline ISSN: 2229-4473
Print ISSN: 0970-4078

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Effect of Organic Nitrogen Sources on Yield Quality and Nutrient Uptake of Rice (Oryza sativa) Under Different Cropping System

Effect of Organic Nitrogen Sources on Yield Quality and Nutrient Uptake of Rice (Oryza sativa) Under Different Cropping System

A field experiment was conducted during 2005-06 and 2006-07 to study the effect of organic nitrogen sources on yield, quality and nutrient uptake of rice (Oryza sativa L.) under different cropping systems. Among the cropping system, rice-potato-onion gave the highest rice grain equivalent yield (355.7 q ha-1) and maximum net return (Rs.268656 ha-1). However the organic nitrogen nutrition (1/3FYM +1/3poultry manure + 1/3vermicompost) with bio-fertilizers (Azotobacter and PSB) had the highest rice grain equivalent yield (353.1 q ha-1) net monetary return (Rs.292454 ha-1) and benefit cost ratio (3.07). The application of organic manure alone or along with biofertilizers inoculation significantly improved the quality parameters, nutrient uptake and fertility status of soil over control. Organic nutrition treatments i.e. (1/3FYM +1/3poultry manure + 1/3vermicompost) with bio-fertilizers (Azotobacter and PSB) and also without bio-fertilizers (Azotobacter and PSB) significantly improved availability of major (nitrogen, phosphorus and potassium), and secondary (sulphur) nutrients over control under the study and the maximum gain of major (nitrogen, phosphorus, and potassium) and secondary (sulphur) nutrients was associated with the application of organic matter (1/3FYM +1/3poultry manure + 1/3 vermicompost) along with bio-fertilizers (Azotobacter and PSB).

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