Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves?
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.24425/jppr.2019.131257 http://hdl.handle.net/11449/221443 |
Resumo: | In agriculture, the mixing of pesticides in tanks is a common practice. However, it is necessary to previse possible physical-chemical implications of this practice, which may affect the efficiency of the treatments performed. Therefore, the objective of this study was to evaluate the effects of the addition of acaricide to insecticidal spray mixtures on the formation of spray droplets and the interaction with citrus leaves. The experimental design was totally randomized, in a (2 × 3 + 1) factorial scheme for seven treatments. Factor A corresponded to the spray mixture used (isolate or in the mixture). Factor B corresponded to the insecticides tested (lambda-cyhalothrin + thiamethoxam, phosmet, and imidacloprid) and the control consisted of a spray mixture with spirodiclofen only. Nine replications were performed for characterization of the spray droplet size spectrum and four replications for the analysis of the surface tension and the contact angle. The mixture of pesticides showed positive results in terms of application safety. The addition of acaricide to insecticide spray mixtures reduced the surface tension and contact angle of droplets on the adaxial surface of orange leaves. There was an increment in volume median diameter (VMD), a significant reduction in the volume of droplets with drift-sensitive size and improvement in the uniformity of droplet size. Therefore, the addition of acaricide to an insecticide spray mixture positively influenced spray droplet formation and the interaction with citrus leaves providing better coverage and droplet size fractions with an appropriate size for safe and efficient application. |
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Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves?Contact angleCoverage efficiencyDroplet sizeSurface tensionTank mixtureIn agriculture, the mixing of pesticides in tanks is a common practice. However, it is necessary to previse possible physical-chemical implications of this practice, which may affect the efficiency of the treatments performed. Therefore, the objective of this study was to evaluate the effects of the addition of acaricide to insecticidal spray mixtures on the formation of spray droplets and the interaction with citrus leaves. The experimental design was totally randomized, in a (2 × 3 + 1) factorial scheme for seven treatments. Factor A corresponded to the spray mixture used (isolate or in the mixture). Factor B corresponded to the insecticides tested (lambda-cyhalothrin + thiamethoxam, phosmet, and imidacloprid) and the control consisted of a spray mixture with spirodiclofen only. Nine replications were performed for characterization of the spray droplet size spectrum and four replications for the analysis of the surface tension and the contact angle. The mixture of pesticides showed positive results in terms of application safety. The addition of acaricide to insecticide spray mixtures reduced the surface tension and contact angle of droplets on the adaxial surface of orange leaves. There was an increment in volume median diameter (VMD), a significant reduction in the volume of droplets with drift-sensitive size and improvement in the uniformity of droplet size. Therefore, the addition of acaricide to an insecticide spray mixture positively influenced spray droplet formation and the interaction with citrus leaves providing better coverage and droplet size fractions with an appropriate size for safe and efficient application.Department of Crop Protection São Paulo State UniversityDepartment of Crop Protection São Paulo State UniversityUniversidade Estadual Paulista (UNESP)della Vechia, Jaqueline Franciosi [UNESP]Santos, Renata Thaysa [UNESP]Griesang, Fabiano [UNESP]Santos, Cícero Mariano [UNESP]Ferreira, Marcelo Costa [UNESP]Andrade, Daniel [UNESP]2022-04-28T19:28:31Z2022-04-28T19:28:31Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article487-493http://dx.doi.org/10.24425/jppr.2019.131257Journal of Plant Protection Research, v. 59, n. 4, p. 487-493, 2019.1899-007X1427-4345http://hdl.handle.net/11449/22144310.24425/jppr.2019.1312572-s2.0-85080133481Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Plant Protection Researchinfo:eu-repo/semantics/openAccess2022-04-28T19:28:31Zoai:repositorio.unesp.br:11449/221443Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:36:01.776496Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves? |
title |
Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves? |
spellingShingle |
Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves? della Vechia, Jaqueline Franciosi [UNESP] Contact angle Coverage efficiency Droplet size Surface tension Tank mixture |
title_short |
Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves? |
title_full |
Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves? |
title_fullStr |
Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves? |
title_full_unstemmed |
Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves? |
title_sort |
Do combinations of insecticides and acaricides influence spray droplet formation and the interaction with citrus leaves? |
author |
della Vechia, Jaqueline Franciosi [UNESP] |
author_facet |
della Vechia, Jaqueline Franciosi [UNESP] Santos, Renata Thaysa [UNESP] Griesang, Fabiano [UNESP] Santos, Cícero Mariano [UNESP] Ferreira, Marcelo Costa [UNESP] Andrade, Daniel [UNESP] |
author_role |
author |
author2 |
Santos, Renata Thaysa [UNESP] Griesang, Fabiano [UNESP] Santos, Cícero Mariano [UNESP] Ferreira, Marcelo Costa [UNESP] Andrade, Daniel [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
della Vechia, Jaqueline Franciosi [UNESP] Santos, Renata Thaysa [UNESP] Griesang, Fabiano [UNESP] Santos, Cícero Mariano [UNESP] Ferreira, Marcelo Costa [UNESP] Andrade, Daniel [UNESP] |
dc.subject.por.fl_str_mv |
Contact angle Coverage efficiency Droplet size Surface tension Tank mixture |
topic |
Contact angle Coverage efficiency Droplet size Surface tension Tank mixture |
description |
In agriculture, the mixing of pesticides in tanks is a common practice. However, it is necessary to previse possible physical-chemical implications of this practice, which may affect the efficiency of the treatments performed. Therefore, the objective of this study was to evaluate the effects of the addition of acaricide to insecticidal spray mixtures on the formation of spray droplets and the interaction with citrus leaves. The experimental design was totally randomized, in a (2 × 3 + 1) factorial scheme for seven treatments. Factor A corresponded to the spray mixture used (isolate or in the mixture). Factor B corresponded to the insecticides tested (lambda-cyhalothrin + thiamethoxam, phosmet, and imidacloprid) and the control consisted of a spray mixture with spirodiclofen only. Nine replications were performed for characterization of the spray droplet size spectrum and four replications for the analysis of the surface tension and the contact angle. The mixture of pesticides showed positive results in terms of application safety. The addition of acaricide to insecticide spray mixtures reduced the surface tension and contact angle of droplets on the adaxial surface of orange leaves. There was an increment in volume median diameter (VMD), a significant reduction in the volume of droplets with drift-sensitive size and improvement in the uniformity of droplet size. Therefore, the addition of acaricide to an insecticide spray mixture positively influenced spray droplet formation and the interaction with citrus leaves providing better coverage and droplet size fractions with an appropriate size for safe and efficient application. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2022-04-28T19:28:31Z 2022-04-28T19:28:31Z |
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 |
http://dx.doi.org/10.24425/jppr.2019.131257 Journal of Plant Protection Research, v. 59, n. 4, p. 487-493, 2019. 1899-007X 1427-4345 http://hdl.handle.net/11449/221443 10.24425/jppr.2019.131257 2-s2.0-85080133481 |
url |
http://dx.doi.org/10.24425/jppr.2019.131257 http://hdl.handle.net/11449/221443 |
identifier_str_mv |
Journal of Plant Protection Research, v. 59, n. 4, p. 487-493, 2019. 1899-007X 1427-4345 10.24425/jppr.2019.131257 2-s2.0-85080133481 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Plant Protection Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
487-493 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128834002747392 |