Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticides

Detalhes bibliográficos
Autor(a) principal: Guimarães, Cesar de Oliveira
Data de Publicação: 2004
Outros Autores: Correia, Antônia do Carmo Barcelos, Ferreira, Marcelo da Costa
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/6893
Resumo: Fungal biopesticides are applied with conventional sprayers and this equipment may be inappropriate, and therefore affect field control efficacy of biopesticides. The objective of this research was to find out if the usual pressures used in the boom sprayers can affect the conidia pesticide activity of the Brazilian commercial entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae. Water fungi suspensions were passed through the equipment under three pressures (20, 40 and 60 psi) and evaluated for viability, virulence and conidia disruption. The viability was evaluated in slides covered by culture media after incubation at 26±0.5ºC and 12 hours photophase. The concentration was determined through Neubauer chamber count and the virulence to Diatraea saccharalis caterpillars was evaluated. In the three tested biopesticides no significant effect was found in any parameters. For the tested pressures, the boom sprayer does not affect the viability or virulence and does not destroy the conidia of the evaluated commercial biopesticides.
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spelling Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticidesPressão de aplicação com pulverizador de barra e eficiência de bioinseticidas fúngicos comerciaisMetarhizium anisopliae; Beauveria bassiana; microbial control; application technique; entomopathogenic fungiMetarhizium anisopliae; Beauveria bassiana; controle microbiano; técnica de aplicação; fungos entomopatogênicosFungal biopesticides are applied with conventional sprayers and this equipment may be inappropriate, and therefore affect field control efficacy of biopesticides. The objective of this research was to find out if the usual pressures used in the boom sprayers can affect the conidia pesticide activity of the Brazilian commercial entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae. Water fungi suspensions were passed through the equipment under three pressures (20, 40 and 60 psi) and evaluated for viability, virulence and conidia disruption. The viability was evaluated in slides covered by culture media after incubation at 26±0.5ºC and 12 hours photophase. The concentration was determined through Neubauer chamber count and the virulence to Diatraea saccharalis caterpillars was evaluated. In the three tested biopesticides no significant effect was found in any parameters. For the tested pressures, the boom sprayer does not affect the viability or virulence and does not destroy the conidia of the evaluated commercial biopesticides.Bioinseticidas fúngicos são aplicados com pulverizadores convencionais e algumas características destes equipamentos podem não ser adequadas e afetar a eficiência dos bioinseticidas. O objetivo deste trabalho foi verificar se pressões usuais, em aplicações com o pulverizador de barra, podem afetar a ação inseticida de conídios de Beauveria bassiana e Metarhizium anisopliae, componentes de produtos comerciais brasileiros. Para isso, suspensões aquosas de três bioinseticidas foram submetidas à passagem pelo equipamento em três pressões (20, 40 e 60 lbf pol-2) e avaliadas quanto ao rompimento, à viabilidade e à virulência dos conídios. Avaliou-se a viabilidade em lâminas de microscopia cobertas com meio de cultura, após incubação a 26±0, 5ºC efotoperíodo de 12 horas. A concentração foi determinada por meio de contagens em câmara de Neubauer e a virulência foi avaliada para lagartas de Diatraea saccharalis. Não foram encontradas, nos três produtos, influências significativas em nenhum dos parâmetros. Nas pressões avaliadas, a aplicação com o pulverizador de barra não reduz a viabilidade e nem a virulência dos conídios dos bioinseticidas testados, tampouco provoca destruição dos conídios.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraGuimarães, Cesar de OliveiraCorreia, Antônia do Carmo BarcelosFerreira, Marcelo da Costa2004-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6893Pesquisa Agropecuaria Brasileira; v.39, n.12, dez. 2004; 1177-1182Pesquisa Agropecuária Brasileira; v.39, n.12, dez. 2004; 1177-11821678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6893/3949info:eu-repo/semantics/openAccess2014-09-05T17:10:44Zoai:ojs.seer.sct.embrapa.br:article/6893Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-09-05T17:10:44Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticides
Pressão de aplicação com pulverizador de barra e eficiência de bioinseticidas fúngicos comerciais
title Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticides
spellingShingle Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticides
Guimarães, Cesar de Oliveira
Metarhizium anisopliae; Beauveria bassiana; microbial control; application technique; entomopathogenic fungi
Metarhizium anisopliae; Beauveria bassiana; controle microbiano; técnica de aplicação; fungos entomopatogênicos
title_short Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticides
title_full Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticides
title_fullStr Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticides
title_full_unstemmed Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticides
title_sort Application pressure in boom sprayer and efficiency of commercial fungal bioinsecticides
author Guimarães, Cesar de Oliveira
author_facet Guimarães, Cesar de Oliveira
Correia, Antônia do Carmo Barcelos
Ferreira, Marcelo da Costa
author_role author
author2 Correia, Antônia do Carmo Barcelos
Ferreira, Marcelo da Costa
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Guimarães, Cesar de Oliveira
Correia, Antônia do Carmo Barcelos
Ferreira, Marcelo da Costa
dc.subject.por.fl_str_mv Metarhizium anisopliae; Beauveria bassiana; microbial control; application technique; entomopathogenic fungi
Metarhizium anisopliae; Beauveria bassiana; controle microbiano; técnica de aplicação; fungos entomopatogênicos
topic Metarhizium anisopliae; Beauveria bassiana; microbial control; application technique; entomopathogenic fungi
Metarhizium anisopliae; Beauveria bassiana; controle microbiano; técnica de aplicação; fungos entomopatogênicos
description Fungal biopesticides are applied with conventional sprayers and this equipment may be inappropriate, and therefore affect field control efficacy of biopesticides. The objective of this research was to find out if the usual pressures used in the boom sprayers can affect the conidia pesticide activity of the Brazilian commercial entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae. Water fungi suspensions were passed through the equipment under three pressures (20, 40 and 60 psi) and evaluated for viability, virulence and conidia disruption. The viability was evaluated in slides covered by culture media after incubation at 26±0.5ºC and 12 hours photophase. The concentration was determined through Neubauer chamber count and the virulence to Diatraea saccharalis caterpillars was evaluated. In the three tested biopesticides no significant effect was found in any parameters. For the tested pressures, the boom sprayer does not affect the viability or virulence and does not destroy the conidia of the evaluated commercial biopesticides.
publishDate 2004
dc.date.none.fl_str_mv 2004-12-01
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/6893
url https://seer.sct.embrapa.br/index.php/pab/article/view/6893
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6893/3949
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.39, n.12, dez. 2004; 1177-1182
Pesquisa Agropecuária Brasileira; v.39, n.12, dez. 2004; 1177-1182
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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