Tillage and crop establishment effects on weeds and productivity of a rice-wheat-mungbean rotation

• DOI: 10.1016/j.fcr.2022.108577
• Publication Date: 2022-05-25T23:35:15Z
• Authors: J.S. Mishra; Rakesh Kumar; Surajit Mondal; S.P. Poonia; K.K. Rao; Rachana Dubey; Rohan Kumar Raman; S.K. Dwivedi; Rahul Kumar; Kirti Saurabh; Md Monobrullah; Santosh Kumar; B.P. Bhatt; R.K. Malik; Virender Kumar; Andrew McDonald; S. Bhaskar
• Keywords: Cropping system; Crop Rotation

Weeds are one of the key threats in sustaining productivity rice-wheat cropping system Indo-Gangetic Plains. The development sound integrated weed management technologies requires knowledge mechanisms that influence flora composition and seedbank dynamics. A long-term study was initiated 2015 at Patna, Bihar, India to evaluate effect seven tillage crop establishment methods on density, composition, rice-wheat-mungbean rotation. All treatments included zero-till mungbean after wheat. Tillage had differential effects composition. In rice, direct-seeded rice recorded 62% lower emergence Cyperus iria, 82–90% Echinochloa colona, 81–83% total weeds compared tilled systems, but wheat intensification favoured E. colona. wheat, Phalaris minor Solanum nigrum. Zero-till reduced Trianthema portulacastrum by 95%, intensification. Nearly, 72% C. iria seeds, grasses, 64% broad-leaved were 0–15 cm soil layer. produced a 13% grain yield than conventional puddled transplanted rice. Compared intensification, under triple systems an 11.5% higher yield. Managing is endeavour. present revealed density diversity. Under system, decreases marginally, maintains due improvement succeeding This also helpful reducing seedbank. Regular monitoring emerging pests such as armyworm (Mythimna separata) are, however, required. suggests adoption zero-tillage can be viable option for concurrently increasing eastern