Performance of different herbicides in a dry-seeded rice system in Sri Lanka

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dc.creatorChauhan, Bhagirath S.
dc.creatorAbeysekara, Anuruddika S.K.
dc.creatorKulatunga, Sakinda D.
dc.creatorWickrama, Upali B.
dc.date2013-09
dc.date2024-12-19T12:54:44Z
dc.date2024-12-19T12:54:44Z
dc.date.accessioned2026-06-27T04:15:31Z
dc.descriptionDry-seeded rice systems are an emerging production technology in many Asian countries. A field study was conducted in 2011 and 2012 at the farm of the Rice Research and Development Institute, Batalagoda, Sri Lanka, to evaluate the performance of different herbicides in a dry-seeded rice system. Weed control treatments were nontreated (weedy), pretilachlor plus pyribenzoxim, cyhalofop-butyl, thiobencarb plus propanil, propanil, and bispyribac-sodium plus metamifop. All these POST herbicides were applied at 8 d after sowing, followed by an MCPA spray at 20 d after sowing. The dominant weeds in the study were barnyardgrass, Chinese sprangletop, and knotgrass. All herbicide treatments provided similar weed control, which ranged from 82 to 99%. Weeds in the nontreated plots reduced rice grain yield by 58 to 79% compared with the herbicide-treated plots. All herbicide-treated plots, except cyhalofop-butyl-treated ones, produced similar grain yield, which ranged from 3.7 to 4.2 t ha−1 in 2011 and from 6.0 to 7.0 t ha−1 in 2012. The results of our study suggest that different herbicides provided similar weed control and therefore different herbicides can be rotated in different seasons to reduce selection pressure on weeds.
dc.identifierhttps://hdl.handle.net/10568/165148
dc.identifier.urihttp://hdl.handle.net/123456789/26820
dc.languageen
dc.publisherCambridge University Press
dc.sourceChauhan, Bhagirath S.; Abeysekara, Anuruddika S.K.; Kulatunga, Sakinda D. and Wickrama, Upali B. 2013. Performance of different herbicides in a dry-seeded rice system in Sri Lanka. Weed technol., Volume 27 no. 3 p. 459-462
dc.subjectbiomass
dc.subjectcereal crops
dc.subjectdry seeding
dc.subjectechinochloa crus-galli
dc.subjectgrain yield
dc.subjectherbicides
dc.subjectmcpa (herbicide) pesticides
dc.subjectpoaceae
dc.subjectpretilachlor
dc.subjectsowing
dc.subjectthiobencarb
dc.subjectweed control
dc.subjectweeds
dc.subjectyields
dc.titlePerformance of different herbicides in a dry-seeded rice system in Sri Lanka
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)