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International Journal of Chemical Studies

Vol. 5, Issue 6 (2017)
Optimization of Nitrogen Splitting for Improving the yield and nitrogen use efficiency in rice (Oryza sativa L.) under western plain zone of Utter Pradesh


Author(s): Rohit Kumar, Adesh Singh, Dinesh Kumar Sharma and UP Shahi

Abstract: A field experiment was conducted during kharif season of 2015 at Crop Research Centre, Sardar Vallabhbhai Patel University of Agriculture and Technology Meerut in Western part Uttar Pradesh to evaluated the response of split application time of N on yield (grain, strawl) and for increasing nitrogen use efficiency in Rice (Oryza sativa L.), reducing nitrate-N leaching of split through leaf colour chart-based N management in rice. The results indicated that the panicle length (cm), panicle plant-1, grains panicle-1, 1000-grains weight (g), yields (grain, straw and biological) and nitrogen use efficiency viz., partial factor productivity (kg grain yield kg-1 nitrogen applied), agronomic (kg grain yield increase kg-1 nitrogen applied) and apparent recovery efficiency (%) were significantly superior with the application of 1/4 N as basal+1/4 at tillering+1/4 at panicle initiation and 1/4 at milking stage as compared to rest of the treatments, except 1/2 N as basal, 1/4 at tillering, 1/4 at panicle initiation and 1/4 at milking stage and 1/4 N as basal, rest through leaf colour chart. However, 1/4 N as basal, 1/4 at tillering, 1/4 panicle initiation and 1/4 milking stage, treatment gave 60 and 32 kg ha-1 higher grain and straw yields as compared to 1/2 N as basal, 1/4 at tillering and 1/4 panicle initiation stage (existing recommendation of N), respectively. Besides, partial factor productivity, agronomic and recovery efficiency in T3 was improved by 1.43, 2.41 and 3.69%, respectively as compared to 1/2 N as basal, 1/4 at tillering and 1/4 panicle initiation stage, (existing recommended N schedule).

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How to cite this article:
Rohit Kumar, Adesh Singh, Dinesh Kumar Sharma, UP Shahi. Optimization of Nitrogen Splitting for Improving the yield and nitrogen use efficiency in rice (Oryza sativa L.) under western plain zone of Utter Pradesh. Int J Chem Stud 2017;5(6):95-100.
International Journal of Chemical Studies