Weed management effect to increase grain yield in dry direct-seeded rice

Abstract

to study the bio-efficacy of weed control practices on weeds and grain yield of dry-seeded rice. The dominant grassy weeds in fields were Echinochloa sp. Panicum repens, Cynodon dactylon, Bracharia mutica, Digitarias sanguinalis, Commelina communis and Leptochloa chinensis. Broad-leaf weeds were Eclipta alba, and Ludwigia parviflora and Cyperus sp. as sedge. Results revealed that, pre-emergence application of pretilachlor + pyrazosulfuron-ethyl (600 + 15 g/ha) recorded significantly lower weed dry weight at 15, 30 and 45 DAS during Kharif 2016 and 2017, higher weed control efficiency at 15, 30 and 45 days after sowing (DAS) (82.6, 80.2 and 80.6% during Kharif 2016 and 82.1, 82.7 and 80.2%, respectively during Kharif 2017, respectively) and higher rice grain yield (4.92 and 4.98 t/ha during Kharif 2016 and 2017, respectively) and which was at a par with twice hand weeding at 20 and 40 DAS. ABSTRACTWeed management effect to increase grain yield in dry direct-seeded rice

Effect of Novel Herbicides and Herbicide Mixtures on Yield and Economics of Transplanted Rice

“…Higher yields were obtained with herbicide mixtures compared to single herbicides due to, multiple modes of action resulted in effective control of all types of weeds resulted in higher yields were recorded. Similar type findings were reported by Singh et al [5] and Ramesha et al [6].…”

Efficacy of Triafamone18.52% SC on Weed Control and Yield in Direct Sown Rice

“…The predominant 'weed species' that were observed in the experimental field during the investigation are Echinochloa colonum, E. crusgalli, Dinerbaretroflexa, and Leptochloa chinensis (grasses), Cyperus rotundus, and C. difformis (sedges), Eclipta alba, Ammania baccifera and Trianthema portulacastrum (broadleaved weeds). However, E. colonum was the most predominant weed among the three groups at various stages of crop growth during both the years of study.Similar trend was close conformity of Ramesha et al [9] and Murali Arthanari [10].…”

Assessment of Post Emergence Herbicide Efficacy for Drone Spraying in Transplanted Rice (Oryza sativa L.)

“…Weed management practices not only reduced weed density and dry matter also allowed the plant to use available resources efficiently which resulted in higher growth parameters and yield attributes ultimately led to higher yield over unweeded control. Similar reports were by Chowdhary and Dixit [11,12,13] and Ramesha et al [14].…”