Journal ID : AMA-14-03-2022-11217
[This article belongs to Volume - 53, Issue - 03]
Total View : 455

Title : Optimizing Tillage cum Crop Establishment Methods and Nutrient Management Strategies on Crop Productivity, Nutrient Use Efficiency and Grain Quality of Rice (Oryza sativa L) in Typic Ustochrept Soils

Abstract :

The current research was conducted in 2019 and 2020 during rainy (Kharif) seasons to determine various tillage crop establishment methods and nutrient management strategies that could be used to drastically reduce on various field inputs viz., water and nutrients for enhancing productivity, nutrient use efficiency and grain quality of Rice (Oryza Sativa L) in Typic Ustochrept soils. The outcomes revealed that conventional puddled transplanted rice (E1, CT-TPR) was recorded significantly higher grain yield (40.4 & 41.3 q ha-1), straw yield (62.7 & 63.8 q ha-1) than wide bed transplanted rice (E2, W Bed-TPR) While yield attributes, nutrient use efficiency and quality parameters of the rice grains were increased in E2 than E1 plots, during both years. The improvement in the grain yield was about 4.39 % and 4.03 per cent under E1 than E2 respectively. Among nutrient management treatments, higher crop yield and ANUE were recorded with the application of 100% RDF+FYM (5tha-1)+PSB(5kgha-1)+Azotobactor 20kgha-1 +ZnSO4 25kgha-1 (N6) over rest of the other treatments. The PNUE values ranged from 53.0 to 97.1 kg grain/kg N absorption, with the PNUE values falling as the N doses rose sharply and moreover higher PFP at STCR based NPK application + ZnSO4 25kgha-1 with 52.6% respectively. Results also indicated that quality of rice, higher value of minimum cooking time, elongation ration and water uptakes ratio were found in N6 treatment. Therefore, the study reveals that conservation tillage and nutrient management strategies may be more realistic solutions for sustaining the productivity and quality of rice crop.

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