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BALANCED USE OF NUTRIENTS FOR HIGH CROP YIELD AND QUALITY OF RICE IN CENTRAL UTTAR PRADESH

V. K. trivedi, M.R. Pandey, R.K. Pathak D.C. Kala


The field experiment on rice crop was conducted at research farm of C.S.A. University Of Agriculture & Technology Kanpur, during Kharif season 2013. The doses of experiment were 50% NPK , 50% NPK+ S40, 50% NPK + S40 + Zn5, 50% NPK +Zn5, 100% NPK, 100% NPK + S40, 100% NPK + Zn5 and 100% NPK + S40 + Zn5. The results showed that the grain yield varied from 29.5 to 45.50q ha-1 and straw yield from 60.50 to 98.50q ha-1. The N content in grains ranged from 1.42 to 1.50%, P from 0.32 to 0.38 % , K from 1.24 to 1.32%, S from 0.20 to 0.25% and Zn from13.0 to 18.0 mg kg-1. The N content in rice straw ranged from 0.22 to 0.28%, P from 0.17 to 0.24%, K from 0.35 to 0.44%,S from 0.10 to 0.14% and Zn from 27.0 to 40.0 mg kg-1. It was noted the N uptake varied from 55.21 to 105.82 kg ha-1, P from 19.72 to 40.92 kgha-1, K from 85.34 to 150.04 kg ha-1, S from 11.95 to 25.16 kg ha-1 and Zn from 201.65 to 473.15 g ha-1.The starch content varied from 65 to 70%, amylose from 28 to 34% and amylopectin from 66 to 72%. The dose of 100% NPK+S40+Zn5 were found most suitable in respect of crop yield, nutrient content uptake of nutrient and quality of rice.