RESUMOA preocupação da sociedade com os riscos gerados pelos agrotóxicos, sobre a saúde e o ambiente tem gerado o interesse por formas alternativas de controle, como o uso de extratos vegetais para o controle de artrópodes. O objetivo deste trabalho foi testar o efeito tóxico do extrato aquoso de pimenta-dedo-de-moça Capsicum baccatum (Magnoliopsida: Solanaceae) sobre o ácaro-vermelho Tetranychus ludeni (Acari: Tetranychidae). Discos foliares de feijão foram mergulhados em extratos de sementes de C. baccatum desidratadas, trituradas, e suspendidas em água destilada, nas concentrações: 0 (controle), 0,5; 1,0; 2,0; 4,0 e 8,0 % (dag dm -3 ). Dez fêmeas adultas de T. ludeni foram colocadas sobre cada disco, e mantidas em sala climatizada (25±2 ºC, fotoperíodo 12 h). Foi avaliada a mortalidade e o número de ovos depositados após 24, 48 e 72 h. A mortalidade não variou entre as concentrações, mas a oviposição do ácaro foi afetada negativamente nas duas maiores concentrações (4 e 8%), reduzindo 25,4% e 34,7%, respectivamente. A pimenta-dedo-de-moça apresenta potencial de uso no controle do ácaro vermelho.Palavras-chave: inseticida botânico; Solanaceae; ácaro vermelho. ABSTRACTCurrent public concern about the adverse effects of agricultural chemicals on health and the environment has generated interest in alternative control methods, like the botanical extracts active against arthropods. The objective of this work was to assess the toxicity of aqueous pepper extract of Capsicum baccatum (Magnoliopsida: Solanaceae) on the red spider mite Tetranychus ludeni (Acari: Tetranychidae). Seeds of C. baccatum were dried, powdered and suspended in distilled water at concentrations of 0 (control), 0.5, 1.0, 2.0, 4.0 and 8.0 dag dm -3. common bean leaf discs were dipped in the different concentration of extract. Ten adult females of T. ludeni were placed on each disc, and kept in a room (25 ± 2 º C, photoperiod 12 h). After 24 h, 48 and 72h the mortality and the number of eggs oviposited were assessed. Mortality did not vary among concentrations, but the oviposition was negatively affected in the highest concentrations (4 and 8%) in the order of 25.4% to 34.7% respectively. The seed extract of C. bacattum has a potential use in controlling red spider mite.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.