2013
DOI: 10.1590/s1806-66902013000300026
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Avaliação de extratos vegetais no controle de mosca-branca, Bemisia tabaci biótipo B em abóbora

Abstract: RESUMO -A abóbora (Cucurbita moschata Duch.) é uma cultura de importância para a agricultura familiar da região Nordeste do Brasil. No entanto, a ocorrência do prateamento das folhas da aboboreira ocasionado pela mosca-branca, Bemisia tabaci biótipo B limita sua produção, causando prejuízos aos agricultores. O objetivo deste trabalho foi avaliar a eficiência de extratos vegetais sobre o nível populacional de ninfas de mosca-branca em abóbora cv. Jacarezinho. O experimento foi instalado em campo experimental, e… Show more

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Cited by 21 publications
(20 citation statements)
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“…and Trichilia pallida Sw. on eggs and nymphs of Bemisia tabaci biotype B, found greater nymphicidal activity in treatments with ethanolic extracts of M. azedarach branches (97.56%) and A. indica branches and leaves (95.45 and 92.94% respectively). Lima et al (2011) Thus, in both bioassays of this study it was found that the highest nymph mortality occurs with 6 and 9 DAI, corroborating the findings of Martinez (2002) who found that the larger active ingredient peaks derived from the A. indica products, which translocate into the plant, take place five days after the treatment. Bleicher et al (2007) evaluated the effect of A. indica leaf aqueous extracts and an azadirachtin-based formulation on nymphs of B. tabaci.…”
Section: Discussionsupporting
confidence: 91%
“…and Trichilia pallida Sw. on eggs and nymphs of Bemisia tabaci biotype B, found greater nymphicidal activity in treatments with ethanolic extracts of M. azedarach branches (97.56%) and A. indica branches and leaves (95.45 and 92.94% respectively). Lima et al (2011) Thus, in both bioassays of this study it was found that the highest nymph mortality occurs with 6 and 9 DAI, corroborating the findings of Martinez (2002) who found that the larger active ingredient peaks derived from the A. indica products, which translocate into the plant, take place five days after the treatment. Bleicher et al (2007) evaluated the effect of A. indica leaf aqueous extracts and an azadirachtin-based formulation on nymphs of B. tabaci.…”
Section: Discussionsupporting
confidence: 91%
“…Among the compounds that are synthesized by the secondary metabolism of plants, terpenoids are a rich source of bioactive molecules that exhibit toxicity to various pests (Ali et al, 2010;Lima et al, 2013;Lima et al, 2009;Silva et al, 2010). Some studies have shown that these compounds act as inhibitors of AChE, impair oviposition (Alexenizer;Dorn, 2007;Cavalcante;Vasconcelos, 2006) and cellular respiration (Yu, 2008) and act as synergists of other bioactive agents (Fazolin et al, 2016).…”
Section: Introductionmentioning
confidence: 99%
“…A capacidade inseticida da mamona se deve à ricina, um alcaloide extremamente tóxico (Lima et al, 2011). Como esse alcaloide é encontrado no endosperma da semente, possivelmente a baixa mortalidade observada neste estudo, sem a bactéria (16%), se deve à utilização de folhas da planta na obtenção do extrato.…”
Section: Resultsunclassified