Browsing by Author "A.J. Madane"

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Effect of sowing and weed control methods on nutrient uptake and soil fertility in direct-seeded rice (Oryia sativa)
(Indian Council of Agricultural Research, 2021) Vijay Pratap; S.K. Verma; Anchal Dass; Deepak Kumar Yadav; A.J. Madane; Rakesh Maurva; Peeyush Kumar Jaysawal
A 2-year field experiment consisting of 3-planting methods and 5-weed control options was conducted in a three- time rcplicatcd split-plot design at Varanasi during kharif 20\ 6-17 to assess the nutrient uptake by direct-seeded rice (Oryza sativa L.) and available nutrient status of soil under different methods of establishing crop and managing weeds.Zero-till direct-seeded rice (ZT-DSR) + residue + Sesbania brown manuring (SBM) recorded lower density and dry-weight of weeds, higher organic carbon (OC), available N, P and K in soil and enhanced N, P and K uptake by 8.9,6.7,7.8% and 23.7,24.5 and 10.2% in grain and straw, respectively, over conventionally-tilled direct-seeded rice (CT-DSR) + SBM.Among weed control options, the use of pendimethalin (1000 g/ha)Jb chlorimuron + metsulftiron (4 + 4 g/ha, 25 DAS) + 1 HW (45 DAS) resulted in lower density and weeds, higher OC, available N, P and K in soil and improved N, P and K uptake in grain and straw by 23.6, 20.9 and 33.0 and 26.7, 25.5 and 26.6%, respectively over weedy check.However, higher EC andpH and lower nutrient (N, P and K) and protein content in grain and straw were found under weed-free condition.Overall, ZT-DSR + residue + SBM and application of pendimethalin (1000 g/ha)y& chlorimuron + metsulfuron (4 + 4 g/ha, 25 DAS) + 1 HW (45 DAS) proved better with respect to reduction in weed biomass, OC, available soil nutrients (N, P and K) and their uptake in DSR. © 2021 Indian Council of Agricultural Research. All rights reserved.
Productivity and profitability of direct-seeded rice under varying establishment methods and weed management practices
(Indian Council of Agricultural Research, 2021) Vijay Pratap; S.K. Verma; Anchal Dass; Deepak Kumar Yadav; Peeyush Kumar Jaysawal; A.J. Madane
A field experiment was conducted at Banaras Hindu University, Varanasi (2016-17) to evaluate the effect of crop establishment and weed management practices on productivity, economics and resource-use efficiency of direct-seeded rice (DSR).The treatments included three crop establishment methods, viz.Zero-tillage-DSR+Sestarma co-culture (ZT-DSR+SCC), ZT-DSR+residue+&?staw'tf co-culture (ZT-DSR+R+SCC) and Conventional till-DSR+Sestarma co- culture (CT-DSR+SCC) assigned to main-plots and five weed management practices, viz.WMPj- pendimethalin (1000 g/ha)y& bispyribac-sodium (25 g/ha) 20 days after sowing (DAS), WMP2-pendimethalin (1000 g/ha)Jb pyrazosulfuron (30 g/ha) 20 DAS+1 hand weeding (HW) 45 DAS, WMP3- pendimethalin (1000 g/ha) Jb chlorimuron+metsulftiron (4+4 g/ha) 20 DAS+1 H W 45 DAS, WMP4- Weed-free and WMP5- Weedy check assigned to sub-plots.The experiment was laid-out in a three-time replicated split-plot design.Results showed that, ZT-DSR+R+SCC recorded higher growth parameters, such as dry matter accumulation (DMA), leaf area index (LAI), yield attributes and enhanced grain yield, net return and water productivity by 16.9,61.9 and 20% and 11.0,69.7 and 10.3% during 2016 and 2017, respectively over CT-DSR+SCC.Among weed management practices, pendimethalin (1000 g/ha) Jb chlorimuron+metsulfuron (4+4 g/ha) 20 DAS+1 HW 45 DAS recorded higher DMA, LAI, yield attributes and finally enhanced grain yield, net returns and water productivity by 31.9,39.2 and 33.3% and 35.7,36.6 and 37.5% during 2016 and 2017, respectively over weedy check.Hence, ZT-DSR+R+SCC along with pendimethalin (1000 g/ha)_/Z? chlorimuron+metsulfuron (4+4 g/ha) 20 DAS+1 HW 45 DAS could be adopted for higher yield, net returns and resource-use efficiency of DSR. © 2021 Indian Council of Agricultural Research. All rights reserved.