Environmental Aspects of Abamectin Use in Crop Protection

Wislocki, Peter G.; Grosso, L. S.; Dybas, R. A.

doi:10.1007/978-1-4612-3626-9_13

Cited by 97 publications

(104 citation statements)

References 8 publications

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“…The post infection development of juveniles was not affected by abamectin, as 94% of juveniles found within the roots from treated seeds at 15dag were swollen forms, a value very close to the 90% obtained from roots of non-treated seeds (data not shown). Such result corroborates that abamectin is not taken up from soil into plants (WISLOCKI et al, 1989). Lower colonization and reproduction of M. incognita were attained in cotton plants from treated seeds in experiment 1 (Table 1).…”

Section: O Efeito De Abamectina Em Tratamento De Sementes Na Penetraçsupporting

confidence: 82%

“…Commercial formulations of abamectin are available for foliar spray applications to control insects and mites. The use as a nematicide is limited by its low solubility in water, tightly binding to soil particles and vulnerability to microbial degradation (WISLOCKI et al, 1989). However, it proved to be effective when applied in close proximity to nematodes.…”

Section: O Efeito De Abamectina Em Tratamento De Sementes Na Penetraçmentioning

confidence: 99%

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Seed treatment affects Meloidogyne incognita penetration, colonization and reproduction on cotton

2010

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Section: O Efeito De Abamectina Em Tratamento De Sementes Na Penetraçsupporting

confidence: 82%

Section: O Efeito De Abamectina Em Tratamento De Sementes Na Penetraçmentioning

confidence: 99%

Seed treatment affects Meloidogyne incognita penetration, colonization and reproduction on cotton

2010

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“…Entretanto, para os derivados da Avermectina, que geralmente são usados como antiparasitários em bovinos, equinos e ovinos e também como pesticidas agrícolas [22][23][24] , ainda não há registros na literatura de resistência no Brasil.…”

Section: Discussionunclassified

Suscetibilidade de larvas de Culex quinquefasciatus a diferentes inseticidas

Alves

Tibúrcio

Melo

2011

Rev. Soc. Bras. Med. Trop.

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RESUMOIntrodução: O presente estudo teve como objetivo avaliar a suscetibilidade de larvas de Culex quinquefasciatus a dois piretróides (Cipermetrina e Deltametrina), dois derivados da Avermectina (ivermectina e abamectina) e a um organofosforado (Temefós). Métodos: Larvas de 3 o e 4 o instares de C. quinquefasciatus foram expostas a diferentes concentrações destes (onze repetições) seguindo o protocolo da Organização Mundial de Saúde. Uma hora após a exposição, as larvas foram lavadas em água desclorada, transferidas para recipientes plásticos contendo água sem cloro, alimentadas e observadas por períodos de 24h, até se transformarem em adultos. Para a determinação das concentrações letais, os valores foram submetidos à análise de regressão usando o modelo probit pelo programa Minitab 15. Resultados: Diferenças entre as estimativas da CL 50 e CL 90 justificaram que a população de mosquitos testada apresenta heterogeneidade em resposta aos inseticidas, sendo a maior concentração utilizada para a CL 50 , a partir da análise de probit para o Temefós. Todos os inseticidas avaliados causaram mortalidade mais acentuada nas primeiras 24h exceto quando expostas à ivermectina. Conclusões: As larvas são suscetíveis a todos os inseticidas testados e há uma necessidade de um monitoramento dos inseticidas utilizados. Palavras-chaves:Culex. Inseticidas. Temefós. Piretróides. Avermectinas. ABSTRACT Introduction:This study aimed to assess the susceptibility of Culex quinquefasciatus larvae to two pyrethroids (Cypermethrin and Deltamethrin), two derivatives of Avermectin (Ivermectin and Abamectin) and an organophosphate (Temephos). Methods: Third-and fourth-instar larvae of C. quinquefasciatus were exposed to different concentrations of insecticides (eleven repetitions) according to the World Health Organization's protocol. One hour after exposure, larvae were washed in dechlorinated tap water, transferred to plastic containers containing water without chlorine, fed and observed for periods of 24h until reaching adulthood. To determine lethal concentrations, the obtained values were submitted to regression analysis using the probit model with the Minitab 15 program. Results: The highest concentration used for the LC 50 from probit analysis was for Temephos. The evaluated insecticides caused more pronounced larvae mortality in the first 24h with the exception of those exposed to ivermectin. Conclusions: This study demonstrates that larvae are susceptible to all tested insecticides and that there is a need for monitoring the use of insecticides.

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“…Water soluble insecticides are differentially absorbed by tree roots comparative to insoluble chemistries such as the avermectins (Wislocki, 1989). Imidacloprid and acephate are labeled in the US for soil application, but restricted in areas of ground water concern (for example, Long Island, N.Y., U.S.).…”

Section: Soil and Trunk Spray Applications Compared To Tree Injectionmentioning

confidence: 99%