Interactions of Bacillus thuringiensis strains for Plutella xylostella (L.) (Lepidoptera: Plutellidae) susceptibility
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Data
2019-11-01
Autores
Santos, Mariana Sanguinete
Dias, Naymã Pinto [UNESP]
Costa, Lilian Lucia
De Bortoli, Caroline Placidi [UNESP]
Souza, Eduardo Henrique
Ferreira Santos, Annelyse Cristina
De Bortoli, Sergio Antonio [UNESP]
Polanczyk, Ricardo Antonio [UNESP]
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Resumo
Bacillus thuringiensis (Bt) biopesticides are an environmentally safe alternative to the management of Plutella xylostella pesticide resistance evolution. We evaluated P. xylostella susceptibility to six Bt strains cultivated and applied individually, and 15 combinations of Bt strains mixed after cultivation. Three combinations resulted in synergism and one in antagonism. Promising results of larval mortality with synergistic effects were obtained with the combinations Bt var. thuringiensis strain HD-2 + Bt finitimus strain HD-3, Bt var. thuringiensis strain HD-2 + Bt dendrolimus strain HD-7 and Bt var. thuringiensis strain HD-2 + Bt var. aizawai strain HD-11.
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Cry toxins, Diamondback moth, Microbial control, Synergism
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Journal of Invertebrate Pathology, v. 168.