Selectivity of pesticides used in rice crop on Telenomus podisi and Trichogramma pretiosum

Authors

  • Juliano de Bastos Pazini Federal University of Pelotas image/svg+xml
  • Anderson Dionei Grützmacher Federal University of Pelotas image/svg+xml
  • José Francisco da Silva Martins Embrapa Clima Temperado
  • Rafael Antônio Pasini Federal University of Pelotas image/svg+xml
  • Matheus Rakes Federal University of Pelotas image/svg+xml

DOI:

https://doi.org/10.5216/pat.v46i3.40844

Keywords:

Oryza sativa, egg parasitoids, integrated pest management.

Abstract

Telenomus and Trichogramma species stand out as agents for the biological control in rice crops, and the main strategy for preserving them is the use of selective pesticides. This study aimed at evaluating the toxicity of pesticides used in irrigated rice crop on Telenomus podisi Ashmead (Hymenoptera: Platygastridae) and Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae). Adults of these parasitoids were exposed to dry residues of pesticides, in a completely randomized experiment, with 25 treatments (24 pesticides + control) and four replications. The insecticides clorantraniliprole, flubendiamide and diflubenzuron and the biological insecticides based on Beauveria bassiana and Metarhizium anisopliae were harmless to T. podisi and T. pretiosum. The harmless herbicides were: 2.4-D amine, profoxydim, quinclorac, ethoxysulfuron and saflufenacil. The fungicide epoxiconazole + kresoxim-methyl was also harmless to these two biological control agents. Therefore, these pesticides are indicated for the integrated pest management, in flooded rice areas.

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Author Biographies

  • Juliano de Bastos Pazini, Federal University of Pelotas
    Departamento de Fitossanidade/Entomologia
  • Anderson Dionei Grützmacher, Federal University of Pelotas
    Departamento de Fitossanidade/Entomologia
  • José Francisco da Silva Martins, Embrapa Clima Temperado
    Entomologia
  • Rafael Antônio Pasini, Federal University of Pelotas
    Departamento de Fitossanidade/Entomologia
  • Matheus Rakes, Federal University of Pelotas
    Departamento de Fitossanidade/Entomologia

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Published

2016-10-05

Issue

v. 46, n. 3, Jul./Sep. 2016

Section

Research Article

License

Authors will not be paid for published articles and must waive their copyright in favor of the PAT journal. On the other hand, they are solely responsible for the content of those articles, even if the Editor holds the right to adjust them to the norms of the journal. Authors are allowed to publish their articles simultaneously in their institutional repositories, as soon as the original publication at the PAT journal is mentioned.

How to Cite

PAZINI, J. DE B. et al. Selectivity of pesticides used in rice crop on Telenomus podisi and Trichogramma pretiosum. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], v. 46, n. 3, p. 327–335, 5 Oct.2016.