Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide

Detalhes bibliográficos
Autor(a) principal: Aminpanah, Hashem -
Data de Publicação: 2015
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bioscience journal (Online)
Texto Completo: https://seer.ufu.br/index.php/biosciencejournal/article/view/26516
Resumo: To evaluate the effects of herbicide rate, cultivar, and spatial pattern on rice grain yield and weed suppression, a field experiment was conducted on a lowland rice field at the Rice Research Station of Tonekabon, north of Iran, in 2011. The experimental design was a split plot-factorial where the whole plot portion was a randomized complete block with three replicates. Main plots were pretilachlor rates (0, 0.5, 1, 1.5, 2 L ha-1 of pretilachlor). The subplots were factorial combinations of two crop spatial patterns (uniform and wide-row planting patterns, 20× 20 and 30 × 13 cm, respectively) and two traditional rice cultivars ('Hashemi' and 'Deylamani'). Regardless of cultivar and spatial pattern, rice grain and biological yields, panicle number per m2, leaf area index, and herbicide efficacy increased, while weed biomass decreased with increasing pretilachlor application rate. Rice grain and biological yields, panicle number per m2, leaf area index, and herbicide efficacy were significantly greater in uniform planting pattern than in wide-row planting pattern when averaged over cultivars and pretilachlor rates. Moreover, uniform planting pattern of rice plants suppressed weeds 39% better than wide-row planting pattern as averaged across pretilchlor rates and cultivars. 'Deylamani' produced grater grain and biological yields, panicle number per m2, leaf area index than 'Hashemi' as averaged across pretilachlor rates and spatial patterns. This experiment illustrated that uniform spatial pattern increased weed suppression, herbicide efficacy, and grain yield.
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spelling Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide Herbicideplanting patternrice cultivarsweed competitionAgricultural SciencesTo evaluate the effects of herbicide rate, cultivar, and spatial pattern on rice grain yield and weed suppression, a field experiment was conducted on a lowland rice field at the Rice Research Station of Tonekabon, north of Iran, in 2011. The experimental design was a split plot-factorial where the whole plot portion was a randomized complete block with three replicates. Main plots were pretilachlor rates (0, 0.5, 1, 1.5, 2 L ha-1 of pretilachlor). The subplots were factorial combinations of two crop spatial patterns (uniform and wide-row planting patterns, 20× 20 and 30 × 13 cm, respectively) and two traditional rice cultivars ('Hashemi' and 'Deylamani'). Regardless of cultivar and spatial pattern, rice grain and biological yields, panicle number per m2, leaf area index, and herbicide efficacy increased, while weed biomass decreased with increasing pretilachlor application rate. Rice grain and biological yields, panicle number per m2, leaf area index, and herbicide efficacy were significantly greater in uniform planting pattern than in wide-row planting pattern when averaged over cultivars and pretilachlor rates. Moreover, uniform planting pattern of rice plants suppressed weeds 39% better than wide-row planting pattern as averaged across pretilchlor rates and cultivars. 'Deylamani' produced grater grain and biological yields, panicle number per m2, leaf area index than 'Hashemi' as averaged across pretilachlor rates and spatial patterns. This experiment illustrated that uniform spatial pattern increased weed suppression, herbicide efficacy, and grain yield.EDUFU2015-02-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/2651610.14393/BJ-v31n2a2015-26516Bioscience Journal ; Vol. 31 No. 2 (2015): Mar./Apr.; 460-469Bioscience Journal ; v. 31 n. 2 (2015): Mar./Apr.; 460-4691981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/26516/16200Brazil; ContemporaryCopyright (c) 2015 Hashem - Aminpanahhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessAminpanah, Hashem -2022-06-01T21:25:52Zoai:ojs.www.seer.ufu.br:article/26516Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-06-01T21:25:52Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide
title Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide
spellingShingle Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide
Aminpanah, Hashem -
Herbicide
planting pattern
rice cultivars
weed competition
Agricultural Sciences
title_short Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide
title_full Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide
title_fullStr Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide
title_full_unstemmed Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide
title_sort Effects of spatial pattern and cultivar on weed control and grain yield in rice at reduced rates of herbicide
author Aminpanah, Hashem -
author_facet Aminpanah, Hashem -
author_role author
dc.contributor.author.fl_str_mv Aminpanah, Hashem -
dc.subject.por.fl_str_mv Herbicide
planting pattern
rice cultivars
weed competition
Agricultural Sciences
topic Herbicide
planting pattern
rice cultivars
weed competition
Agricultural Sciences
description To evaluate the effects of herbicide rate, cultivar, and spatial pattern on rice grain yield and weed suppression, a field experiment was conducted on a lowland rice field at the Rice Research Station of Tonekabon, north of Iran, in 2011. The experimental design was a split plot-factorial where the whole plot portion was a randomized complete block with three replicates. Main plots were pretilachlor rates (0, 0.5, 1, 1.5, 2 L ha-1 of pretilachlor). The subplots were factorial combinations of two crop spatial patterns (uniform and wide-row planting patterns, 20× 20 and 30 × 13 cm, respectively) and two traditional rice cultivars ('Hashemi' and 'Deylamani'). Regardless of cultivar and spatial pattern, rice grain and biological yields, panicle number per m2, leaf area index, and herbicide efficacy increased, while weed biomass decreased with increasing pretilachlor application rate. Rice grain and biological yields, panicle number per m2, leaf area index, and herbicide efficacy were significantly greater in uniform planting pattern than in wide-row planting pattern when averaged over cultivars and pretilachlor rates. Moreover, uniform planting pattern of rice plants suppressed weeds 39% better than wide-row planting pattern as averaged across pretilchlor rates and cultivars. 'Deylamani' produced grater grain and biological yields, panicle number per m2, leaf area index than 'Hashemi' as averaged across pretilachlor rates and spatial patterns. This experiment illustrated that uniform spatial pattern increased weed suppression, herbicide efficacy, and grain yield.
publishDate 2015
dc.date.none.fl_str_mv 2015-02-25
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/26516
10.14393/BJ-v31n2a2015-26516
url https://seer.ufu.br/index.php/biosciencejournal/article/view/26516
identifier_str_mv 10.14393/BJ-v31n2a2015-26516
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/26516/16200
dc.rights.driver.fl_str_mv Copyright (c) 2015 Hashem - Aminpanah
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2015 Hashem - Aminpanah
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Brazil; Contemporary
dc.publisher.none.fl_str_mv EDUFU
publisher.none.fl_str_mv EDUFU
dc.source.none.fl_str_mv Bioscience Journal ; Vol. 31 No. 2 (2015): Mar./Apr.; 460-469
Bioscience Journal ; v. 31 n. 2 (2015): Mar./Apr.; 460-469
1981-3163
reponame:Bioscience journal (Online)
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Bioscience journal (Online)
collection Bioscience journal (Online)
repository.name.fl_str_mv Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv biosciencej@ufu.br||
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