EFFECT OF ESSENTIAL OILS ON THE ROOT-KNOT NEMATODE MANAGEMENT

  • Deisy Xavier Amora
  • Guilherme Silva de Podesta
  • Erica das Gracas Carvalho Nasu
  • Leonardo Domingues de Figueiredo
  • Fernanda Carla Ferreira
  • Everaldo Antonio Lopes
  • Silamar Ferraz

Abstract

In an attempt to find alternative compounds for the management of root-knot nematodes, whether essential oils would be absorbed by plants and affect the development of Meloidogyne javanica inside tomato roots was evaluated. First, the viability, in vitro, of the essential oils of Artemisia absinthium (wormwood), Mentha × piperita (peppermint), Origanum vulgare (oregano) and Thymus vulgaris (thyme) was assessed. Then, the same essential oils were tested in pot experiments, at concentrations of 0.25% (v / v) and 0.5% (v / v). In in vitro tests, all essential oils were effective in killing the juveniles, resulting in mortality rates of 99.0% at both concentrations. The essential oils of Mentha × piperita, O. vulgare and T. vulgaris were effective in reducing nematode hatching to about 2.0%. In tests conducted under greenhouse conditions, however, tomato plants treated with the essential oils of A. absinthium, Mentha × piperita and O. vulgare had
increased the number of M. javanica eggs and galls. Therefore, despite being highly toxic to nematodes in vitro, some of the essential oils tested in this study increased nematode development.

Published
2017-09-30
How to Cite
Amora, D. X., de Podesta, G. S., Nasu, E. das G. C., Figueiredo, L. D. de, Ferreira, F. C., Lopes, E. A., & Ferraz, S. (2017). EFFECT OF ESSENTIAL OILS ON THE ROOT-KNOT NEMATODE MANAGEMENT. AGRI-ENVIRONMENTAL SCIENCES, 3(1), 15-23. Retrieved from https://revista.unitins.br/index.php/agri-environmental-sciences/article/view/225
Section
Artigo científico