Preliminary reports on comparative weed competitiveness of Bangladeshi monsoon and winter rice varieties under puddled transplanted conditions

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dc.creatorIslam, A.K.M. Mominul
dc.creatorNasir, Mohammad
dc.creatorAkter Mou, Mahmuda
dc.creatorYeasmin, Sabina
dc.creatorIslam, Md. Shafiqul
dc.creatorAhmed, Sharif
dc.creatorAnwar, Md. Parvez
dc.creatorHadifa, Adel
dc.creatorBaazeem, Alaa
dc.creatorIqbal, Muhammad Aamir
dc.creatorJuraimi, Abdul Shukor
dc.creatorEL Sabagh, Ayman
dc.date2021-05-01
dc.date2024-12-19T12:53:42Z
dc.date2024-12-19T12:53:42Z
dc.date.accessioned2026-06-27T04:16:09Z
dc.descriptionWeed-competitive rice cultivars, a viable tool for integrated weed management of rice-field weeds, may greatly reduce the weed pressure and excessive dependence on herbicide in controlling weeds. Based on this premise, field experiments were conducted in 2018 and 2019 during the monsoon and winter rice-growing seasons at the Agronomy Field Laboratory of Bangladesh Agricultural University, Bangladesh, to evaluate the weed competitiveness of the selected rice varieties. A total of 42 monsoon and 28 winter rice varieties from Bangladesh were evaluated under “weedy” and “weed-free” conditions in the puddled transplanted system of cultivation. The field experiments were designed with three replications in a randomized complete block design. The results revealed that weed competition greatly reduces the yield of rice, and relative yield loss was 15–68% and 20–50% in monsoon and winter season rice, respectively. The lowest relative yield losses were recorded in monsoon rice from the variety BU dhan 1 (18%) and from the winter rice BRRI hybrid dhan5 (23.7%), which exhibited high weed tolerance. The weed competitive index (WCI) greatly varied among the varieties in both seasons and the monsoon season, ranging from 0.4 to 2.8, and the highest value was recorded from the hybrid variety Dhani Gold followed by BU dhan 1. In winter season rice, the WCI varied 0.25 to 2.4 and the highest value was recorded from the variety BRRI hybrid dhan3, followed by hybrid variety Heera 6. In monsoon rice, hybrid Dhani Gold was the most productive, but BU dhan 1 was the most weed competitive variety. Among the winter-grown varieties, the hybrid Heera 6 was the most productive, and the most weed competitive. Our research confirmed a high degree of variability in weed competitiveness among the 70 Bangladeshi rice varieties tested.
dc.identifierhttps://hdl.handle.net/10568/164286
dc.identifier.urihttp://hdl.handle.net/123456789/27172
dc.languageen
dc.publisherMDPI
dc.rightsOpen Access
dc.sourceIslam, A.K.M.M., Nasir, M., Akter Mou, M., Yeasmin, S., Islam, Md. S., Ahmed, S., Anwar, Md. P., Hadifa, A., Baazeem, A., Iqbal, M.A., Juraimi, A.S. and EL Sabagh, A. 2021. Preliminary reports on comparative weed competitiveness of Bangladeshi monsoon and winter rice varieties under puddled transplanted conditions. Sustainability, Volume 13 no. 9 p. 5091
dc.subjectrenewable energy
dc.subjectsustainability and the environment
dc.subjectgeography
dc.subjectplanning and development
dc.subjectmanagement
dc.subjectmonitoring
dc.subjectpolicy and law
dc.titlePreliminary reports on comparative weed competitiveness of Bangladeshi monsoon and winter rice varieties under puddled transplanted conditions
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)