Dispersion capacity of Trichogramma pretiosum riley, 1879 for controlling Helicoverpa zea (Boddie, 1850) in corn

Authors

  • L.A. Nogueira de Sá EMBRAPA; Centro Nacional de Pesquisas de Defensivos Agrícolas
  • J.R.P. Parra USP; ESALQ; Departamento de Entomologia
  • S. Silveira Neto USP; ESALQ; Departamento de Entomologia

DOI:

https://doi.org/10.1590/S0103-90161993000200009

Keywords:

Trichogramma pretiosum, dispersion capacity, corn, Helicoverpa zea, biological control, Zea mays

Abstract

The dispersion capacity of Tríchogramma pretiosum Riley, 1879 in relation to Helicoverpa zea (Boddie, 1850) eggs was studied in corn, in two regions, in the State of São Paulo. The dispersion capacity of T. pretiosum 36 hours after release ranged from 80 to 102 m² and an inverse relationship between parasitism and predation occurred for H. zea eggs for both localities studied. The results obtained indicate that releases for controlling H. zea should be made at 100 points/ha.

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Published

1993-09-01

Issue

Vol. 50 No. 2 (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

Dispersion capacity of Trichogramma pretiosum riley, 1879 for controlling Helicoverpa zea (Boddie, 1850) in corn . (1993). Scientia Agricola, 50(2), 226-231. https://doi.org/10.1590/S0103-90161993000200009