Influence of agricultural extension activities on tick control among cattle on family dairy farms in the southeast Brazil

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dc.contributor.authorDuarte, Fernanda Calvo
dc.contributor.authorRoma Junior, Luiz Carlos
dc.contributor.authorSantos, Marcelo Luz
dc.contributor.authorFiorini, Leonardo Costa
dc.contributor.authorMendes, Márcia Cristina
dc.date.accessioned2024-05-14T13:22:24Z
dc.date.available2024-05-14T13:22:24Z
dc.date.issued2021
dc.description.abstractABSTRACT The aim of the present study was to evaluate the resistance of tick populations on 16 family farms that were members of the agricultural producers’ cooperative of the São Pedro region of the state of São Paulo (COOPAMSP). Bioassays were conducted on nine commercial products in 2018 and 2019. Their active agents were as follows: deltamethrin, amitraz, cypermethrin + chlorpyrifos + citronella, cypermethrin + chlorpyrifos + fenthion, cypermethrin + chlorpyrifos + piperonyl butoxide, dichlorvos + chlorpyrifos, cypermethrin, chlorfenvinphos + dichlorvos, and ivermectin. On some farms, a larval packet test (LPT) was also performed. Overall, four acaricides presented mean efficacy greater than 89%, among which two were associations of pyrethroids + organophosphates and two were associations of organophosphates + organophosphates. Deltamethrin, cypermethrin and ivermectin presented mean efficacy lower than 50%. In the bioassays using the LPT, all five farms showed resistance to diazinon, while only one farm presented resistance to cypermethrin. The results were handed over to each farmer with appropriate guidance for treatments. This study demonstrated that the important points to be implemented related directly to use control strategies, based on direct assistance for farmers and diagnosis of tick population sensitivities.
dc.identifier.doi10.1590/1808-1657000482020
dc.identifier.issn1808-1657
dc.identifier.otherS1808-16572021000100214-scl
dc.identifier.urihttps://repositorio-aptaregional.agricultura.sp.gov.br/handle/123456789/832
dc.relation.ispartofArquivos do Instituto Biológico
dc.subjectrural extension
dc.subjectRhipicephalus (Boophilus) microplus
dc.subjectresistance
dc.titleInfluence of agricultural extension activities on tick control among cattle on family dairy farms in the southeast Brazil
dc.typeArtigos
oaire.citation.volume88

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