Insecticidal activity of extracts of handroanthus impetiginosus on Plutella xylostella (Lepidoptera: plutellidae) larvae

Author(s):Show less -

Silva, Andriely B. ; Montagnini, Daniel L. ; Katchborian-Neto, Albert ; Andrade, Joao V. ; Manuquian, Hallana A. ; Cavallari, Pedro S. S. R. ; Almeida, Samarah G. ; Barbosa, Enes P. ; Cunha, Wilson R. ; Soares, Marisi G. ; Santos, Mario F. C. ; Silva, Marcio L. A. ; Vacari, Alessandra M.

• Document type: Journal article
• Source: NATURAL PRODUCT RESEARCH; v. N/A, p. 8-pg., 2023-09-15.

Abstract

Plutella xylostella is considered the main pest of cabbage in Brazil and the world, causing damage of up to 100%. Thus, this study evaluated the insecticidal activity of extracts obtained from the fruits, seeds, bark, leaves, and flowers of Handroanthus impetiginosus against the diamondback moth, P. xylostella larvae. The seed extract showed the highest mortality (97.0%) compared to the control treatment. The LC50 values indicated that the seed and flower extracts (0.01003 and 0.01288mg/L respectively) assumed the highest toxicity to P. xylostella larvae after 24 h of exposure. The results of this study indicated that the seeds extract is the most promising toxic extract, with measured mortality of approximately 97.0% for P. xylostella larvae after 144 h of exposure in kale plants. Seed extract showed the best insecticidal activity. Thus, this extract can be applied to develop an insecticide based on H. impetiginosus seed. [Graphics] . (AU)

• FAPESP's process: 20/02483-2 - Insecticidal activity of extracts of Handroanthus impetiginosus (Purple Tabebuia) in Plutella xylostella (Lepidoptera: Plutellidae) larvae, as well as obtaining a new insecticide
• Grantee: Andriely Borges da Silva
• Support Opportunities: Scholarships in Brazil - Scientific Initiation