Efeito da bioatividade de extratos de Elephantopus Scaber Linn. em Spodoptera litura e na comunidade microbiana do solo





Bioatividade, Biopesticida, Estrutura da comunidade, Mortalidade, Nível de proteína


Este estudo tem como objetivo investigar os efeitos biopesticidas de Elephantopus scaber Linn. extrair na mortalidade de Spodoptera litura, Plutella xylostella e organismos não-alvo e investigar o impacto nos níveis de proteína de S. litura e na estrutura da comunidade microbiana do solo. Experimento realizado em delineamento inteiramente casualizado. Extratos de metanol de folhas de E. scaber, nas concentrações de 2%, 4%, 6%, 8%, 10% e 12%, foram testados para bioatividade contra a larva de 2º ínstar de S. litura, P. xylostella e minhocas. Taxas de mortalidade de larvas e vermes foram observadas. Os dados coletados foram analisados ​​por meio de análise de variância (ANOVA), seguida de probit e análise descritiva. Os resultados mostraram que os extratos metanólicos de E. scaber (12%) influenciaram as maiores taxas de mortalidade para S. litura (93,35%) e P. xylostella (96,65%) com CL50 e CL80 de S. litura foi de 1,867 e 4,763; para P. xylostella foram 4,488 e 7,92, respectivamente. No entanto, a aplicação de biopesticida de E. scaber também influencia a taxa de mortalidade de minhocas. O extrato de 6% de E. scaber resultou em 60% da morte de minhocas durante o período de 20 dias. Para além disso, maiores concentrações de extratos de E. scaber resultaram em menores pesos moleculares e níveis de proteínas de S. litura. A diversidade e a densidade da comunidade microbiana do solo também diminuíram na concentração de 6%.


Não há dados estatísticos.


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Como Citar

YULIANI, Y. Efeito da bioatividade de extratos de Elephantopus Scaber Linn. em Spodoptera litura e na comunidade microbiana do solo. Revista de Ciências Agroveterinárias, Lages, v. 21, n. 3, p. 206-215, 2022. DOI: 10.5965/223811712132022206. Disponível em: https://revistas.udesc.br/index.php/agroveterinaria/article/view/21500. Acesso em: 10 dez. 2022.



Artigo de Pesquisa - Ciência de Plantas e Produtos Derivados