Effect of the number and interval between releases of Trichogramma pretiosum riley on the parasitism and control of Helicoverpa zea (boddie) in corn

Authors

  • L.A. Nogueira de Sá EMBRAPA; Centro Nacional de Pesquisa de Monitoramento e Avaliação de Impacto Ambiental
  • J.R.P. Parra USP; ESALQ; Departamento de Entomologia

DOI:

https://doi.org/10.1590/S0103-90161993000300006

Keywords:

Trichogramma pretiosum, Helicoverpa zea, biological control, corn pests

Abstract

The effect of the number and interval between releases of Trichogramma pretiosum Riley on parasitism and on the control of Helicoverpa zea (Boddie) was studied in corn. Results indicated an increase of up to 5 times in parasitism of H. zea eggs when 3 releases of 100,000 T. pretiosum adults per ha were made. H. zea damage in corn ears in T. pretiosum release areas was reduced 26%, demonstrating the potential of this parasitoid for the control of this pest.

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Published

1993-12-01

Issue

Vol. 50 No. 3 (1993)

Section

Agronomy

License

All content of the journal, except where identified, is licensed under a Creative Common attribution-type BY-NC.

How to Cite

Effect of the number and interval between releases of Trichogramma pretiosum riley on the parasitism and control of Helicoverpa zea (boddie) in corn . (1993). Scientia Agricola, 50(3), 355-359. https://doi.org/10.1590/S0103-90161993000300006