
pmid: 24688423
pmc: PMC3933028
A field study was conducted in the boro season of 2011-12 and aman season of 2012 at Jessore, Bangladesh, to evaluate the performance of sequential applications of preemergence herbicides (oxadiargyl 80 g ai ha−1, pendimethalin 850 g ai ha−1, acetachlor + bensulfuranmethyl 240 g ai ha−1, and pyrazosulfuron 15 g ai ha−1) followed by a postemergence herbicide (ethoxysulfuron 18 g ai ha−1) in dry-seeded rice. All evaluated herbicides reduced weed density and biomass by a significant amount. Among herbicides, pendimethalin, oxadiargyl, and acetachlor + bensulfuranmethyl performed very well against grasses; pyrazosulfuron, on the other hand, was not effective. The best herbicide for broadleaf weed control was oxadiargyl (65–85% control); pendimethalin and acetachlor + bensulfuraonmethyl were not effective for this purpose. The best combination for weed control was oxadiargyl followed by ethoxysulfuron in the boro season and oxadiargyl followed by a one-time hand weeding in the aman season. Compared with the partial weedy plots (hand weeded once), oxadiargyl followed by ethoxysulfuron (4.13 t ha−1) provided a 62% higher yield in the boro season while oxadiargyl followed by a one-time hand weeding (4.08 t ha−1) provided a 37% higher yield in the aman season.
2300 Environmental Science, Technology, 1300 Biochemistry, Science, Dry season, Plant Weeds, Soil Science, Genetics and Molecular Biology, Rice Water Management and Productivity Enhancement, Plant Science, Agricultural and Biological Sciences, Species Specificity, 1300 Biochemistry, Genetics and Molecular Biology, Management of Soil Fertility and Crop Productivity, Paddy field, FOS: Mathematics, Biomass, Biology, Weed Management and Herbicide Resistance, Ecology, Herbicides, T, Q, R, Life Sciences, Oryza, Pendimethalin, Weed control, Weed, Agronomy, Multidisciplinary Sciences, FOS: Biological sciences, Science & Technology - Other Topics, Medicine, Seasons, Grain Yield, Mathematics, Research Article
2300 Environmental Science, Technology, 1300 Biochemistry, Science, Dry season, Plant Weeds, Soil Science, Genetics and Molecular Biology, Rice Water Management and Productivity Enhancement, Plant Science, Agricultural and Biological Sciences, Species Specificity, 1300 Biochemistry, Genetics and Molecular Biology, Management of Soil Fertility and Crop Productivity, Paddy field, FOS: Mathematics, Biomass, Biology, Weed Management and Herbicide Resistance, Ecology, Herbicides, T, Q, R, Life Sciences, Oryza, Pendimethalin, Weed control, Weed, Agronomy, Multidisciplinary Sciences, FOS: Biological sciences, Science & Technology - Other Topics, Medicine, Seasons, Grain Yield, Mathematics, Research Article
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