Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi – 221 005, India
Experiment was conducted during kharif season 2015 at farmer's field, in the village Loharapur, Varanasi, to study the impact of nutrient management technologies under irrigated rice in alluvial soil with concentrated organic manure and various levels of inorganic fertilizers targeted yield of rice (40 qha−1) and (50 qha−1) have been achieved by using the plant nutrients on the basis of targeted yield concept STCR (soil test crop response technology). Results of the experiment indicated that in the location, the achievement of the target yield was within ±5% variation proving the validity of the equations for prescribing integrated fertilizer doses for rice. The highest increment in yield was recorded with yield target of 50 qha−1 (38.70%) followed by 40 qha−1 (18.31%) over RDF. The highest grain yield and benefit cost ratio were recorded in target yield 50 qha−1. The remarkable net benefit of rice transplanted at location (Rs 31,140.00 and Rs 37,201.00) under treatments where plant nutrients applied as per soil test value (STCR treatment). Though fertilization significantly improved the rice productivity over control, the application of NPK and FYM in combination was found more effective in increasing rice productivity than their application alone.
RDF, STCR, yield response, net return, benefitcost ratio
