Activity against Meloidogyne incognita of volatile compounds produced during amendment of soil with castor bean cake

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorPedroso, Luma A.-
Autor(es): dc.creatorCampos, Vicente P.-
Autor(es): dc.creatorBarros, Aline F.-
Autor(es): dc.creatorJustino, Júlio C.-
Autor(es): dc.creatorPaula, Letícia L. de-
Data de aceite: dc.date.accessioned2026-02-09T11:52:51Z-
Data de disponibilização: dc.date.available2026-02-09T11:52:51Z-
Data de envio: dc.date.issued2020-05-15-
Data de envio: dc.date.issued2020-05-15-
Data de envio: dc.date.issued2019-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/40939-
Fonte completa do material: dc.identifierhttps://brill.com/view/journals/nemy/aop/article-10.1163-15685411-00003319/article-10.1163-15685411-00003319.xml?language=en-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1149498-
Descrição: dc.descriptionIncorporation of castor bean cake into the soil results in the emission of four main compounds: skatole, γ-decalactone, 4-methylphenol and phenol. The toxic effects of these compounds on the life cycle of Meloidogyne incognita were studied here. Only phenol did not reduce hatching of M. incognita second-stage juveniles (J2) at any of the concentrations tested. The other compounds reduced J2 hatching by 42.1 to 59.3% at the highest concentrations. When J2 were immersed in Tween 80® solutions of each compound, at their respective LC50 values and inoculated into soil with tomato plants, reductions in the numbers of galls (48.5-69.3%) and eggs (42.8-62.5%) were observed in comparison with the control; this result was similar to that of carbofuran. The highest reductions in the numbers of galls (21.8-88.5%) and eggs (49.6-98.9%) occurred with all compounds when the highest concentration (500 mg l−1) was applied to the substrate at the moment of J2 inoculation. Volatile compounds of γ-decalactone and skatole failed to cause J2 immobility or mortality. However, phenol caused 95.8% and 4-methylphenol caused 100% mortality. With fumigation, the highest concentration (1000 mg (l substrate)−1) of any tested compound reduced gall numbers at a similar rate to the nematicide dazomet (98.7-100%) and reduced egg numbers (87.1-99.7%). The volatile compounds skatole, γ-decalactone, 4-methylphenol and phenol have a nematicidal effect on the life cycle of M. incognita and alter its pathogenic behaviour on the plant.-
Idioma: dc.languageen-
Publicador: dc.publisherBrill-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceNematology-
Palavras-chave: dc.subjectγ-decalactone-
Palavras-chave: dc.subject4-methylphenol-
Palavras-chave: dc.subjectNematicide-
Palavras-chave: dc.subjectNematode control-
Palavras-chave: dc.subjectPhenol-
Palavras-chave: dc.subjectPlant-parasitic nematodes-
Palavras-chave: dc.subjectRoot-knot nematode-
Palavras-chave: dc.subjectSkatole-
Título: dc.titleActivity against Meloidogyne incognita of volatile compounds produced during amendment of soil with castor bean cake-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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