Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying

Detalhes bibliográficos
Autor(a) principal: Chaim, Aldemir
Data de Publicação: 2002
Outros Autores: Pessoa, Maria Conceição Peres Young, Neto, João Camargo, Hermes, Luiz Carlos
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/6366
Resumo: The main objective of this work was to compare two methods to estimate the deposition of pesticide applied by aerial spraying. Hundred and fifty pieces of water sensitive paper were distributed over an area of 50 m length by 75 m width for sampling droplets sprayed by an aircraft calibrated to apply a spray volume of 32 L/ha. The samples were analysed by visual microscopic method using NG 2 Porton graticule and by an image analyser computer program. The results reached by visual microscopic method were the following: volume median diameter, 398±62 mm; number median diameter, 159±22 mm; droplet density, 22.5±7.0 droplets/cm2 and estimated deposited volume, 22.2±9.4 L/ha. The respective ones reached with the computer program were: 402±58 mm, 161±32 mm, 21.9±7.5 droplets/cm2 and 21.9±9.2 L/ha. Graphs of the spatial distribution of droplet density and deposited spray volume on the area were produced by the computer program.
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spelling Comparison of microscopic method and computational program for pesticide deposition evaluation of sprayingComparação de método microscópico e programa computacional para a estimativa da deposição de agrotóxicos pela pulverização aéreaagricultural chemicals; aerial application; application methods; density; volumeprodutos agroquímicos; aplicação aérea; métodos de aplicação; densidade; volumeThe main objective of this work was to compare two methods to estimate the deposition of pesticide applied by aerial spraying. Hundred and fifty pieces of water sensitive paper were distributed over an area of 50 m length by 75 m width for sampling droplets sprayed by an aircraft calibrated to apply a spray volume of 32 L/ha. The samples were analysed by visual microscopic method using NG 2 Porton graticule and by an image analyser computer program. The results reached by visual microscopic method were the following: volume median diameter, 398±62 mm; number median diameter, 159±22 mm; droplet density, 22.5±7.0 droplets/cm2 and estimated deposited volume, 22.2±9.4 L/ha. The respective ones reached with the computer program were: 402±58 mm, 161±32 mm, 21.9±7.5 droplets/cm2 and 21.9±9.2 L/ha. Graphs of the spatial distribution of droplet density and deposited spray volume on the area were produced by the computer program.O principal objetivo deste trabalho foi comparar dois métodos para estimar a deposição de agrotóxicos aplicados por pulverização aérea. Foram distribuídos 150 cartões sensíveis à água numa área de 50 m de comprimento por 75 m de largura, para amostrar gotas pulverizadas por uma aeronave calibrada para aplicar um volume de calda de 32 L/ha. As amostras foram analisadas pelo método de visualização microscópica com a utilização de uma gratícula de Porton NG 2 e por um programa de computador analisador de imagens. Os resultados obtidos pelo método de visualização microscópica foram: diâmetro mediano volumétrico, 398±62 mm; diâmetro mediano numérico, 159±22 mm; densidade de gotas, 22,5±7,0 gotas/cm2 e volume depositado estimado, 22,2±9,4 L/ha. Os respectivos resultados obtidos pelo programa de computador foram: 402±58 mm, 161±32 mm, 21,9±7,5 gotas/cm2 e 21,9±9,2 L/ha. O programa de computador possibilitou a produção de gráficos com a distribuição espacial da densidade de gotas e volumes depositados na área da aplicação.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraChaim, AldemirPessoa, Maria Conceição Peres YoungNeto, João CamargoHermes, Luiz Carlos2002-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6366Pesquisa Agropecuaria Brasileira; v.37, n.4, abr. 2002; 493-496Pesquisa Agropecuária Brasileira; v.37, n.4, abr. 2002; 493-4961678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/6366/3423info:eu-repo/semantics/openAccess2010-08-19T19:32:26Zoai:ojs.seer.sct.embrapa.br:article/6366Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-08-19T19:32:26Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying
Comparação de método microscópico e programa computacional para a estimativa da deposição de agrotóxicos pela pulverização aérea
title Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying
spellingShingle Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying
Chaim, Aldemir
agricultural chemicals; aerial application; application methods; density; volume
produtos agroquímicos; aplicação aérea; métodos de aplicação; densidade; volume
title_short Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying
title_full Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying
title_fullStr Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying
title_full_unstemmed Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying
title_sort Comparison of microscopic method and computational program for pesticide deposition evaluation of spraying
author Chaim, Aldemir
author_facet Chaim, Aldemir
Pessoa, Maria Conceição Peres Young
Neto, João Camargo
Hermes, Luiz Carlos
author_role author
author2 Pessoa, Maria Conceição Peres Young
Neto, João Camargo
Hermes, Luiz Carlos
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Chaim, Aldemir
Pessoa, Maria Conceição Peres Young
Neto, João Camargo
Hermes, Luiz Carlos
dc.subject.por.fl_str_mv agricultural chemicals; aerial application; application methods; density; volume
produtos agroquímicos; aplicação aérea; métodos de aplicação; densidade; volume
topic agricultural chemicals; aerial application; application methods; density; volume
produtos agroquímicos; aplicação aérea; métodos de aplicação; densidade; volume
description The main objective of this work was to compare two methods to estimate the deposition of pesticide applied by aerial spraying. Hundred and fifty pieces of water sensitive paper were distributed over an area of 50 m length by 75 m width for sampling droplets sprayed by an aircraft calibrated to apply a spray volume of 32 L/ha. The samples were analysed by visual microscopic method using NG 2 Porton graticule and by an image analyser computer program. The results reached by visual microscopic method were the following: volume median diameter, 398±62 mm; number median diameter, 159±22 mm; droplet density, 22.5±7.0 droplets/cm2 and estimated deposited volume, 22.2±9.4 L/ha. The respective ones reached with the computer program were: 402±58 mm, 161±32 mm, 21.9±7.5 droplets/cm2 and 21.9±9.2 L/ha. Graphs of the spatial distribution of droplet density and deposited spray volume on the area were produced by the computer program.
publishDate 2002
dc.date.none.fl_str_mv 2002-04-01
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/6366
url https://seer.sct.embrapa.br/index.php/pab/article/view/6366
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/6366/3423
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.37, n.4, abr. 2002; 493-496
Pesquisa Agropecuária Brasileira; v.37, n.4, abr. 2002; 493-496
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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