Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum. Agronomy (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/958 |
Resumo: | The aim of this study was to evaluate the effects of density and emergence period of Brachiaria brizantha compared to maize on the production of both species under coexistence. The design was randomized blocks in a factorial arrangement. A 4x5+1 arrangement was adopted for maize, consisting of four densities of B. brizantha per pot (1, 2, 4, and 8 plants), and five emergence periods of B. brizantha (7 days before, on the same day and 7, 14 and 28 days after maize emergence), plus an additional treatment corresponding to sole maize. The 4x5x2 arrangement was used for forage, consisting of the same densities and emergence periods and B. brizantha in the presence and absence of maize. One maize plant per pot was used, and the B. brizantha densities were obtained from pre-germinated seeds in a humid chamber. The height, culm diameter, aerial part dry biomass, and the crop yield were evaluated for maize, and for forage, the total dry biomass of the aerial part was evaluated. Results showed that the emergence period of B. brizantha in relation to maize affected the height, culm diameter, biomass production of the aerial part and grain yield, mainly when the forage was established before the crop and in greater densities. However, when the emergence of B. brizantha occurred after the establishment of maize, the development of B. brizantha was suppressed, independent of its density. |
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Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958Efeitos de densidade e época de emergência de Brachiaria brizantha em competição com plantas de milho - DOI: 10.4025/actasciagron.v28i3.958períodos de convivênciainterferênciaZea mays L.Brachiaria5.01.03.00-8 FitotecniaThe aim of this study was to evaluate the effects of density and emergence period of Brachiaria brizantha compared to maize on the production of both species under coexistence. The design was randomized blocks in a factorial arrangement. A 4x5+1 arrangement was adopted for maize, consisting of four densities of B. brizantha per pot (1, 2, 4, and 8 plants), and five emergence periods of B. brizantha (7 days before, on the same day and 7, 14 and 28 days after maize emergence), plus an additional treatment corresponding to sole maize. The 4x5x2 arrangement was used for forage, consisting of the same densities and emergence periods and B. brizantha in the presence and absence of maize. One maize plant per pot was used, and the B. brizantha densities were obtained from pre-germinated seeds in a humid chamber. The height, culm diameter, aerial part dry biomass, and the crop yield were evaluated for maize, and for forage, the total dry biomass of the aerial part was evaluated. Results showed that the emergence period of B. brizantha in relation to maize affected the height, culm diameter, biomass production of the aerial part and grain yield, mainly when the forage was established before the crop and in greater densities. However, when the emergence of B. brizantha occurred after the establishment of maize, the development of B. brizantha was suppressed, independent of its density.O objetivo deste trabalho foi avaliar os efeitos de densidades e épocas de emergência de Brachiaria brizantha em relação ao milho sobre a produção de ambas as espécies cultivadas em conjunto. O delineamento utilizado foi o de blocos casualizados, dispostos em arranjo fatorial, sendo que para o milho adotou-se o esquema 4x5+1, constituído de quatro densidades de B. brizantha por vaso (1, 2, 4 e 8 plantas), e cinco épocas de emergência de B. brizantha (7 dias antes, no mesmo dia e aos 7, 14 e 28 dias após a emergência do milho), mais um tratamento adicional correspondente ao milho solteiro. Na forrageira adotou-se o arranjo 4x5x2, constituídos pelas mesmas densidades e épocas de emergência e pela B. brizantha na presença e na ausência do milho. Utilizou-se uma planta de milho por vaso e as densidades da B. brizantha foram obtidas de sementes pré-germinadas em câmara úmida. Avaliou-se no milho a altura, o diâmetro do colmo, a biomassa seca total da parte aérea e o rendimento de grãos, e na forrageira a biomassa seca total da parte aérea. Verificou-se que a época de emergência da B. brizantha em relação ao milho interferiu na altura, diâmetro do colmo, produção de biomassa da parte aérea e no rendimento de grãos, principalmente quando a forrageira se estabeleceu antecipadamente à cultura e nas maiores densidades. Entretanto, quando a emergência de B. brizantha ocorreu após o estabelecimento do milho houve a supressão do desenvolvimento da B. brizantha independentemente da sua densidade.Universidade Estadual de Maringá2008-03-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/95810.4025/actasciagron.v28i3.958Acta Scientiarum. Agronomy; Vol 28 No 3 (2006); 373-378Acta Scientiarum. Agronomy; v. 28 n. 3 (2006); 373-3781807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/958/476Jakelaitis, AdrianoSilva, Alexandre Ferreira daPereira, Jardel LopesSilva, Antonio Alberto daFerreira, Lino RobertoVivian, Rafaelinfo:eu-repo/semantics/openAccess2022-11-23T18:37:17Zoai:periodicos.uem.br/ojs:article/958Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-11-23T18:37:17Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958 Efeitos de densidade e época de emergência de Brachiaria brizantha em competição com plantas de milho - DOI: 10.4025/actasciagron.v28i3.958 |
title |
Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958 |
spellingShingle |
Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958 Jakelaitis, Adriano períodos de convivência interferência Zea mays L. Brachiaria 5.01.03.00-8 Fitotecnia |
title_short |
Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958 |
title_full |
Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958 |
title_fullStr |
Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958 |
title_full_unstemmed |
Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958 |
title_sort |
Effects of density and emergence period of Brachiaria brizantha in competition with maize plant - DOI: 10.4025/actasciagron.v28i3.958 |
author |
Jakelaitis, Adriano |
author_facet |
Jakelaitis, Adriano Silva, Alexandre Ferreira da Pereira, Jardel Lopes Silva, Antonio Alberto da Ferreira, Lino Roberto Vivian, Rafael |
author_role |
author |
author2 |
Silva, Alexandre Ferreira da Pereira, Jardel Lopes Silva, Antonio Alberto da Ferreira, Lino Roberto Vivian, Rafael |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Jakelaitis, Adriano Silva, Alexandre Ferreira da Pereira, Jardel Lopes Silva, Antonio Alberto da Ferreira, Lino Roberto Vivian, Rafael |
dc.subject.por.fl_str_mv |
períodos de convivência interferência Zea mays L. Brachiaria 5.01.03.00-8 Fitotecnia |
topic |
períodos de convivência interferência Zea mays L. Brachiaria 5.01.03.00-8 Fitotecnia |
description |
The aim of this study was to evaluate the effects of density and emergence period of Brachiaria brizantha compared to maize on the production of both species under coexistence. The design was randomized blocks in a factorial arrangement. A 4x5+1 arrangement was adopted for maize, consisting of four densities of B. brizantha per pot (1, 2, 4, and 8 plants), and five emergence periods of B. brizantha (7 days before, on the same day and 7, 14 and 28 days after maize emergence), plus an additional treatment corresponding to sole maize. The 4x5x2 arrangement was used for forage, consisting of the same densities and emergence periods and B. brizantha in the presence and absence of maize. One maize plant per pot was used, and the B. brizantha densities were obtained from pre-germinated seeds in a humid chamber. The height, culm diameter, aerial part dry biomass, and the crop yield were evaluated for maize, and for forage, the total dry biomass of the aerial part was evaluated. Results showed that the emergence period of B. brizantha in relation to maize affected the height, culm diameter, biomass production of the aerial part and grain yield, mainly when the forage was established before the crop and in greater densities. However, when the emergence of B. brizantha occurred after the establishment of maize, the development of B. brizantha was suppressed, independent of its density. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-03-04 |
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 |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/958 10.4025/actasciagron.v28i3.958 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/958 |
identifier_str_mv |
10.4025/actasciagron.v28i3.958 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/958/476 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Agronomy; Vol 28 No 3 (2006); 373-378 Acta Scientiarum. Agronomy; v. 28 n. 3 (2006); 373-378 1807-8621 1679-9275 reponame:Acta Scientiarum. Agronomy (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Agronomy (Online) |
collection |
Acta Scientiarum. Agronomy (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br |
_version_ |
1799305903258730496 |