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Título: Plant extracts with potential to control of two-spotted spider mite
Título(s) alternativo(s): Extratos vegetais com potencial de uso no controle do ácaro rajado
Autor(es): Tabet, Vinicius Gomes
Vieira, Marineide Rosa
Martins, Gustavo Luis Mamoré
Sousa, Cristiane Gabas Negrão Milan de
Data do documento: 1-Nov-2018
Resumo: Tetranychus urticae Koch (Acari: Tetranychidae) is a species of great economic importance to Brazil. In its control, the main option is the use of synthetic miticides, which, if used indiscriminately, can contaminate the environment, farmers and consumers. In the search for control alternatives, this study aimed to evaluate the effect of plant extracts and essential oils on females of this pest. For this, T. urticae females, reared in laboratory, were sprayed in Potter tower. Fourteen plants were tested in the form of aqueous extracts (AE), hydroethanolic extracts (HE) or essential oils (EO). The experimental plot consisted of a Petri dish with a Canavalia ensiformis L. leaf disk containing five T. urticae females, using ten plates per treatment. Mortality evaluations were performed 24, 48, 72, 96 and 120 hours after spraying, recording the number of dead females on the disc and the number of dead females on the moistened cotton. We considered that females found on cotton were repelled by treatments. Matricaria chamomilla L. HE and Pimpinella anisum L. AE have acaricidal effect for females, providing above 83% of mortality, after 120 hours. Origanum vulgare L. HE causes at least 75% mortality after 24 hours. Also 120 hours after spraying, P. anisum HE and O. vulgare AE cause repellency of females above 16%, and A. absinthium HE exceeds 22% for this parameter. The results stimulate further researches to determine the optimum dose and evaluation of additional effects on the fertility of surviving females.
Palavras-chave: Alternative control
Matricaria chamomilla
Origanum vulgare
Pimpinella anisum
Tetranychus urticae
Citação: Tabet, Vinicius Gomes; Vieira, Marineide Rosa; Martins, Gustavo Luis Mamoré; Sousa, Cristiane Gabas Negrão Milan de. Plant extracts with potential to control of two-spotted spider mite. Arquivos do Instituto Biológico. v. 85, e0762015, .2018.
ISSN: 1808-1657
Número DOI: 10.1590/1808-1657000762015
Idioma: en_US
Editora: Instituto Biológico
Local da Publicação: São Paulo
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