Effect of reduced fungicide doses on control of soybean Asian rust and bean yield

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dc.contributor.authorFeliciani Barbosa, Giselle [UNESP]
dc.contributor.authorDa Cruz Centurion, Maria Aparecida Pessôa [UNESP]
dc.contributor.authorTardivo Marin, Beatriz [UNESP]
dc.contributor.authorFeliciani Barbosa, Grazielle
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Anhanguera (UNIDERP)
dc.contributor.institutionMonsanto of Brazil
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-27T11:29:05Z
dc.date.available2014-05-27T11:29:05Z
dc.date.issued2013-05-01
dc.description.abstractOne of the diseases of greatest importance for soybean [Glycine max (L.) Merrill] crops is the soybean Asian rust, caused by the fungus Phakopsora pachyrhizi Sydon & P. Sydon. One of the main methods of control is through the use of chemical fungicides. The objective of this study was to evaluate the effects of reduced doses of the fungicides azoxystrobin +ciproconazol +mineral oil and tebuconazol, with two application intervals (10 and 20 days), on two soybean cultivars [NK-412113 (V Max) and MG/BR-46 (Conquista)], for the control of soybean rust, as well as their effects on yield. A field assay was conducted during spring-summer 2006/2007. Disease severity assessment was done at 10 days intervals, before fungicide spraying, using a diagrammatic scale. For the early cultivar (NK-412113), the use of reduced fungicide doses did not change disease severity. For the semi early cycle cultivar (MG/BR-46), reduced doses were not significantly different from the recommended doses for soybean rust control. A yield increase was observed in cultivar MG/BR-46 with fungicide spraying, but not for NK-412113. When the disease affects plants at critical stages related to the formation of pods and grains, fungicide treatments azoxystrobin +ciproconazol, in their reduced doses, can also provide efficient control of the disease, with lower severity and higher yields.en
dc.description.affiliationUniversidade Estadual Paulista (UNESP)
dc.description.affiliationUniversidade Anhanguera (UNIDERP)
dc.description.affiliation, Rua Alexandre Herculano, 1400, Jardim Veraneio, CEP: 79037-280, Campo Grande, MS
dc.description.affiliationMonsanto of Brazil
dc.description.affiliationUniversidade de São Paulo
dc.description.affiliationUniversidade Federal de São Carlos
dc.description.affiliationUnespUniversidade Estadual Paulista (UNESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent347-352
dc.identifierhttp://www.interciencia.org/v38_05/347.pdf
dc.identifier.citationInterciencia, v. 38, n. 5, p. 347-352, 2013.
dc.identifier.issn0378-1844
dc.identifier.scopus2-s2.0-84882796462
dc.identifier.urihttp://hdl.handle.net/11449/75330
dc.identifier.wosWOS:000324666500005
dc.language.isoeng
dc.relation.ispartofInterciencia
dc.relation.ispartofjcr0.258
dc.relation.ispartofsjr0,183
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectApplication intervals
dc.subjectAsian rust
dc.subjectChemical control
dc.subjectGlycine max
dc.subjectPests
dc.subjectPhakopsora pachyrhizi
dc.subjectSoybean
dc.titleEffect of reduced fungicide doses on control of soybean Asian rust and bean yielden
dc.typeArtigo
dcterms.licensehttp://www.scielo.org.ve/revistas/inci/paboutj.htm
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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