Economic damage caused by the cotton stem borer in southern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/14298 |
Resumo: | Cotton stem borer, Eudnobothurs brasiliensis damage showed a graded distribution from Lhe margin of the field to the middle. Infestation was considerably higher in the border rows than in the center of the field. The study documented the behavior of this pest during the period when it migrates from overwintering sites around the field to cotton. The results confirm former observations that the levels of infestation are higher near humid overwintering areas with permanent vegetation, Early planted blocks of cotton had the highest rates of infestation, often reaching 70% of plant mortality. In later plantings a 20% reduction in plant mortality was observed every time planting was delayed for ten days. The data suggest that this pest may be controlled with insecticide applications in border rows. This procedure would eliminate the need of chemical treatments which are environmentally unsound. The data also suggest that planting densities of nine to ten plants per m would help to reduce the impact of this pest on cotton yield. The relationship between yield loss and plant mortality was assessed and the economic damage estimated. |
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Economic damage caused by the cotton stem borer in southern BrazilDano econômico causado pela broca-do-algodoeiro no sul do Brasilphenology; sampling; chemical controlfenologia; amostragem; controle químicoCotton stem borer, Eudnobothurs brasiliensis damage showed a graded distribution from Lhe margin of the field to the middle. Infestation was considerably higher in the border rows than in the center of the field. The study documented the behavior of this pest during the period when it migrates from overwintering sites around the field to cotton. The results confirm former observations that the levels of infestation are higher near humid overwintering areas with permanent vegetation, Early planted blocks of cotton had the highest rates of infestation, often reaching 70% of plant mortality. In later plantings a 20% reduction in plant mortality was observed every time planting was delayed for ten days. The data suggest that this pest may be controlled with insecticide applications in border rows. This procedure would eliminate the need of chemical treatments which are environmentally unsound. The data also suggest that planting densities of nine to ten plants per m would help to reduce the impact of this pest on cotton yield. The relationship between yield loss and plant mortality was assessed and the economic damage estimated.Os danos causados pela broca-do-algodoeiro, Eutinobothurs brasiliensis apresentam uma distribuição estratificada, da bordadura para o centro da área cultivada. Estes danos foram consideravelmente maiores nas bordaduras do que nas áreas centrais. O estudo serviu também para documentar o comportamento da broca durante o período em que ela migra para as áreas cultivadas com algodoeiro. Os resultados confirmam que as faixas com altos níveis de infestação são as próximas aos locais onde a broca passa o período da entressafra, ou seja, áreas com vegetação permanente e relativamente úmidas. Os primeiros plantios apresentaram os maiores níveis de infestação, frequentemente atingindo 70% de mortalidade de plantas. Em blocos plantados mais tarde, observou-se uma redução ao redor de 20% na mortalidade do plantas, para cada dez dias em que se prorrogou o plantio. Os estudos sugerem que este inseto pode ser controlado através de aplicações de inseticida nas bordaduras. Este procedimento eliminaria a necessidade de se aplicar tratamento químico em toda a área. Este trabalho sugere, também, que densidade de plantio com nove a dez plantas por m contribuiria para reduzir o impacto deste inseto - praga na produção de algodão. Avaliou-se a relação entre a mortalidade de plantas e a perda na produção, assim como o dano econômico.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária Brasileirados Santos, Walter JorgeGutierrez, Andrew PaulPizzamiglio, Marina Angela2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/14298Pesquisa Agropecuaria Brasileira; v.24, n.3, mar. 1989; 297-305Pesquisa Agropecuária Brasileira; v.24, n.3, mar. 1989; 297-3051678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/14298/8204info:eu-repo/semantics/openAccess2014-08-22T16:36:09Zoai:ojs.seer.sct.embrapa.br:article/14298Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-22T16:36:09Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Economic damage caused by the cotton stem borer in southern Brazil Dano econômico causado pela broca-do-algodoeiro no sul do Brasil |
title |
Economic damage caused by the cotton stem borer in southern Brazil |
spellingShingle |
Economic damage caused by the cotton stem borer in southern Brazil dos Santos, Walter Jorge phenology; sampling; chemical control fenologia; amostragem; controle químico |
title_short |
Economic damage caused by the cotton stem borer in southern Brazil |
title_full |
Economic damage caused by the cotton stem borer in southern Brazil |
title_fullStr |
Economic damage caused by the cotton stem borer in southern Brazil |
title_full_unstemmed |
Economic damage caused by the cotton stem borer in southern Brazil |
title_sort |
Economic damage caused by the cotton stem borer in southern Brazil |
author |
dos Santos, Walter Jorge |
author_facet |
dos Santos, Walter Jorge Gutierrez, Andrew Paul Pizzamiglio, Marina Angela |
author_role |
author |
author2 |
Gutierrez, Andrew Paul Pizzamiglio, Marina Angela |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
dos Santos, Walter Jorge Gutierrez, Andrew Paul Pizzamiglio, Marina Angela |
dc.subject.por.fl_str_mv |
phenology; sampling; chemical control fenologia; amostragem; controle químico |
topic |
phenology; sampling; chemical control fenologia; amostragem; controle químico |
description |
Cotton stem borer, Eudnobothurs brasiliensis damage showed a graded distribution from Lhe margin of the field to the middle. Infestation was considerably higher in the border rows than in the center of the field. The study documented the behavior of this pest during the period when it migrates from overwintering sites around the field to cotton. The results confirm former observations that the levels of infestation are higher near humid overwintering areas with permanent vegetation, Early planted blocks of cotton had the highest rates of infestation, often reaching 70% of plant mortality. In later plantings a 20% reduction in plant mortality was observed every time planting was delayed for ten days. The data suggest that this pest may be controlled with insecticide applications in border rows. This procedure would eliminate the need of chemical treatments which are environmentally unsound. The data also suggest that planting densities of nine to ten plants per m would help to reduce the impact of this pest on cotton yield. The relationship between yield loss and plant mortality was assessed and the economic damage estimated. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
dc.type.none.fl_str_mv |
|
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.sct.embrapa.br/index.php/pab/article/view/14298 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/14298 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/14298/8204 |
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 |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.24, n.3, mar. 1989; 297-305 Pesquisa Agropecuária Brasileira; v.24, n.3, mar. 1989; 297-305 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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