Agronomic perfomance of soybean according to stages of development and levels of defoliation
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , |
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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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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1815438961060872192 |