부산대학교 도서관

Weed menace is the major biotic constraint in direct-seeded rice (DSR) cultivation as they cause higher yield loss. Hence, exploring different weed management options along with intercropping could be promising practice for improving crop productivity. Keeping this in view, an experiment was conducted at Pantnagar, Uttarakhand, India in 2015 and 2016 to evaluate the effect of different weed management practices in the DSR + Brahmi intercropping system for providing farmers with a practical and economically viable weed control solution. Two intercropping ratios along with four weed management practices in sole rice and sole Brahmi as control were evaluated. The results revealed the significant effect of weed management and intercropping on weed control efficiency (WCE) and different competition indices. The highest WCE (73.3 and 83.3%) was recorded with pendimethalin (pre-emergence) + cyhalofop-butyl (post-emergence) + 1 HW (hand weeding) at 45 DAS (days after sowing) in 2:1 ratio treatment. Similarly, significantly minimum density and weed biomass were also recorded under the same treatment. However, significantly higher values of relative yield total, aggressivity, relative crowding coefficient, and competition ratio were recorded in a 1:1 ratio of DSR + Brahmi. In conclusion, using Brahmi as an intercrop with DSR can help with weed management, reduces the use of pesticides, and increases profitability. [ABSTRACT FROM AUTHOR]