Control of diamondback moth with Lippia gracilis essential oil

Authors

  • Joseane de Jesus Oliveira Universidade Tiradentes, Programa de Pós-graduação em Biotecnologia Industrial, Avenida Murilo Dantas, no 300, Farolândia, CEP 49032-490 Aracaju, SE.
  • Eliana Maria dos Passos Empresa de Desenvolvimento Agropecuário de Sergipe, Avenida Carlos Rodrigues da Cruz, s/no, Capucho, CEP 49080-190 Nossa Senhora do Socorro, SE.
  • Roberta Morais Aragão Universidade Federal de Sergipe, Departamento de Engenharia Agronômica, Cidade Universitária Prof. José Aloísio de Campos, Avenida Marechal Rondon, s/no, Jardim Rosa Elze, CEP 49100-000 São Cristóvão, SE.
  • Tárcio Souza Santos Universidade Tiradentes, Programa de Pós-graduação em Biotecnologia Industrial, Avenida Murilo Dantas, no 300, Farolândia, CEP 49032-490 Aracaju, SE.
  • Elizângela Mércia Oliveira Cruz Universidade Federal de Sergipe, Departamento de Engenharia Agronômica, Cidade Universitária Prof. José Aloísio de Campos, Avenida Marechal Rondon, s/no, Jardim Rosa Elze, CEP 49100-000 São Cristóvão, SE.
  • Marcelo da Costa Mendonça Universidade Tiradentes, Programa de Pós-graduação em Biotecnologia Industrial, Avenida Murilo Dantas, no 300, Farolândia, CEP 49032-490 Aracaju, SE.

DOI:

https://doi.org/10.1590/S1678-3921.pab2022.v57.27040

Keywords:

Plutella xylostella, alecrim-da-chapada, insecticidal activity

Abstract

The objective of this work was to evaluate the potential of the essential oils of the LGRA-106 and LGRA-108 Lippia gracilis genotypes for the control of diamondback moth (Plutella xylostella). The lethal concentrations (LCs) were estimated by two routes of action (residual and spraying), using oil concentrations ranging from 0.5 to 3.0% v v-1, diluted in Tween 80 (1.5%). To determine the effect of the LC to 50% (LC50) on the development of P. xylostella, two compounds of the L. gracilis genotypes, thymol, and carvacrol, were sprayed on the insects. The repellency of the LC50 was evaluated by residual action, in a free-choice behavioral bioassay. The LGRA-106 genotype showed a greater toxicity via residual action (LC50 = 8.82 mg mL-1), as well as a higher repellency index. LGRA-108 was more toxic via spraying (LC50= 9.64 mg mL-1). Larval development and viability were reduced in approximately 50% with LGRA-106 or thymol and up to 70% with LGRA-108 or carvacrol, which caused mortality from 1.70 to 1.97 days after spraying. The oils of the LGRA-106 and LGRA-108 genotypes of L. gracilis have insecticidal activity in the control of P. xylostella.

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Published

2022-05-18

How to Cite

Oliveira, J. de J., Passos, E. M. dos, Aragão, R. M., Santos, T. S., Cruz, E. M. O., & Mendonça, M. da C. (2022). Control of diamondback moth with <i>Lippia gracilis</i> essential oil. Pesquisa Agropecuaria Brasileira, 57(Z), e02085. https://doi.org/10.1590/S1678-3921.pab2022.v57.27040

Issue

V.57, Jan./Dec., 2022 :Continuos publication

Section

ENTOMOLOGY