Agronomic perfomance of soybean according to stages of development and levels of defoliation

Detalhes bibliográficos
Autor(a) principal: Zuffo, Alan Mario
Data de Publicação: 2015
Outros Autores: Zambiazzi, Everton Vinicius, Gesteira, Gabriel de Siqueira, Rezende, Pedro Milanez de, Bruzi, Adriano Teodoro, Soares, Igor Oliveri, Gwinner, Raoni, Bianchi, Mariane Cristina
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/39255
Resumo: Insect pests have led to decreases in grain yield; yet this occurrence depends on the level of defoliation and the reproductive stage of the plant when defoliation occurs. Thus, the aim of this study was to evaluate the agronomic performance of the cultivar BRS Favorita RR® according to the stages of reproductive development of the plant at defoliation and the levels of defoliation. A randomized block experimental design was used in a 6 × 3 + 1 factorial arrangement, composed of six reproductive stages at the time of defoliation [R1 (Beginning flowering), R2 (Full flowering), R3 (Beginning pod formation), R4 (Full pod formation), R5 (Beginning seed filling), R6 (Full seed filling -100% pod filling), and three levels of defoliation (33, 66 and 99%), as well as one additional treatment without defoliation, with three replications. The following features were evaluated: Plant height, number of pods per plant, number of grains per pod, harvest index, thousand seed weight, and grain yield. It was observed that all the levels of defoliation had a significant effect on the other variables studied, with the exception of plant height. The phenological stages at the time of defoliation had a significant effect on plant height, number of pods per plant, harvest index, and grain yield. There was a decline in grain yield with levels of defoliation as of 66%, and this decline was more significant with defoliation at the more advanced stages of the crop reproductive cycle.
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spelling Agronomic perfomance of soybean according to stages of development and levels of defoliationLeaf areaBRS Favorita RR®Glycine max (L.) MerrillDamage levelInsect pests have led to decreases in grain yield; yet this occurrence depends on the level of defoliation and the reproductive stage of the plant when defoliation occurs. Thus, the aim of this study was to evaluate the agronomic performance of the cultivar BRS Favorita RR® according to the stages of reproductive development of the plant at defoliation and the levels of defoliation. A randomized block experimental design was used in a 6 × 3 + 1 factorial arrangement, composed of six reproductive stages at the time of defoliation [R1 (Beginning flowering), R2 (Full flowering), R3 (Beginning pod formation), R4 (Full pod formation), R5 (Beginning seed filling), R6 (Full seed filling -100% pod filling), and three levels of defoliation (33, 66 and 99%), as well as one additional treatment without defoliation, with three replications. The following features were evaluated: Plant height, number of pods per plant, number of grains per pod, harvest index, thousand seed weight, and grain yield. It was observed that all the levels of defoliation had a significant effect on the other variables studied, with the exception of plant height. The phenological stages at the time of defoliation had a significant effect on plant height, number of pods per plant, harvest index, and grain yield. There was a decline in grain yield with levels of defoliation as of 66%, and this decline was more significant with defoliation at the more advanced stages of the crop reproductive cycle.Academic Journals (AJ)2020-03-09T14:00:19Z2020-03-09T14:00:19Z2015-05-07info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfZUFFO, A. M. et al. Agronomic perfomance of soybean according to stages of development and levels of defoliation. African Journal of Agricultural Research, [S.l.], v. 10, n. 19, p. 2089-2096, May 2015. DOI: 10.5897/AJAR2014.9369http://repositorio.ufla.br/jspui/handle/1/39255African Journal of Agricultural Research (AJAR)reponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessZuffo, Alan MarioZambiazzi, Everton ViniciusGesteira, Gabriel de SiqueiraRezende, Pedro Milanez deBruzi, Adriano TeodoroSoares, Igor OliveriGwinner, RaoniBianchi, Mariane Cristinaeng2020-03-09T14:00:20Zoai:localhost:1/39255Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-03-09T14:00:20Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Agronomic perfomance of soybean according to stages of development and levels of defoliation
title Agronomic perfomance of soybean according to stages of development and levels of defoliation
spellingShingle Agronomic perfomance of soybean according to stages of development and levels of defoliation
Zuffo, Alan Mario
Leaf area
BRS Favorita RR®
Glycine max (L.) Merrill
Damage level
title_short Agronomic perfomance of soybean according to stages of development and levels of defoliation
title_full Agronomic perfomance of soybean according to stages of development and levels of defoliation
title_fullStr Agronomic perfomance of soybean according to stages of development and levels of defoliation
title_full_unstemmed Agronomic perfomance of soybean according to stages of development and levels of defoliation
title_sort Agronomic perfomance of soybean according to stages of development and levels of defoliation
author Zuffo, Alan Mario
author_facet Zuffo, Alan Mario
Zambiazzi, Everton Vinicius
Gesteira, Gabriel de Siqueira
Rezende, Pedro Milanez de
Bruzi, Adriano Teodoro
Soares, Igor Oliveri
Gwinner, Raoni
Bianchi, Mariane Cristina
author_role author
author2 Zambiazzi, Everton Vinicius
Gesteira, Gabriel de Siqueira
Rezende, Pedro Milanez de
Bruzi, Adriano Teodoro
Soares, Igor Oliveri
Gwinner, Raoni
Bianchi, Mariane Cristina
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Zuffo, Alan Mario
Zambiazzi, Everton Vinicius
Gesteira, Gabriel de Siqueira
Rezende, Pedro Milanez de
Bruzi, Adriano Teodoro
Soares, Igor Oliveri
Gwinner, Raoni
Bianchi, Mariane Cristina
dc.subject.por.fl_str_mv Leaf area
BRS Favorita RR®
Glycine max (L.) Merrill
Damage level
topic Leaf area
BRS Favorita RR®
Glycine max (L.) Merrill
Damage level
description Insect pests have led to decreases in grain yield; yet this occurrence depends on the level of defoliation and the reproductive stage of the plant when defoliation occurs. Thus, the aim of this study was to evaluate the agronomic performance of the cultivar BRS Favorita RR® according to the stages of reproductive development of the plant at defoliation and the levels of defoliation. A randomized block experimental design was used in a 6 × 3 + 1 factorial arrangement, composed of six reproductive stages at the time of defoliation [R1 (Beginning flowering), R2 (Full flowering), R3 (Beginning pod formation), R4 (Full pod formation), R5 (Beginning seed filling), R6 (Full seed filling -100% pod filling), and three levels of defoliation (33, 66 and 99%), as well as one additional treatment without defoliation, with three replications. The following features were evaluated: Plant height, number of pods per plant, number of grains per pod, harvest index, thousand seed weight, and grain yield. It was observed that all the levels of defoliation had a significant effect on the other variables studied, with the exception of plant height. The phenological stages at the time of defoliation had a significant effect on plant height, number of pods per plant, harvest index, and grain yield. There was a decline in grain yield with levels of defoliation as of 66%, and this decline was more significant with defoliation at the more advanced stages of the crop reproductive cycle.
publishDate 2015
dc.date.none.fl_str_mv 2015-05-07
2020-03-09T14:00:19Z
2020-03-09T14:00:19Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv ZUFFO, A. M. et al. Agronomic perfomance of soybean according to stages of development and levels of defoliation. African Journal of Agricultural Research, [S.l.], v. 10, n. 19, p. 2089-2096, May 2015. DOI: 10.5897/AJAR2014.9369
http://repositorio.ufla.br/jspui/handle/1/39255
identifier_str_mv ZUFFO, A. M. et al. Agronomic perfomance of soybean according to stages of development and levels of defoliation. African Journal of Agricultural Research, [S.l.], v. 10, n. 19, p. 2089-2096, May 2015. DOI: 10.5897/AJAR2014.9369
url http://repositorio.ufla.br/jspui/handle/1/39255
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Academic Journals (AJ)
publisher.none.fl_str_mv Academic Journals (AJ)
dc.source.none.fl_str_mv African Journal of Agricultural Research (AJAR)
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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