Wednesday, 20 November 2002
D0529

This presentation is part of : Display Presentations, Subsection Ca. Biological Control

Biological control of European corn borer in sweet and field corn with Trichogramma ostriniae

Michael P. Hoffmann1, Mark G Wright2, Thomas P. Kuhar3, Jeffrey Gardner1, Sylvie Pitcher1, and Abby Seaman4. (1) Cornell University, Entomology, Insectary Building, Ithaca, NY, (2) University of Hawaii at Manoa, Department of Plant & Environmental Protection Sciences, 3050 Maile Way, Honolulu, HI, (3) Virginia Tech, Entomology, Eastern Shore AREC, 33446 Research Drive, Painter, VA, (4) Cornell University, Integrated Pest Management, NYSAES, Geneva, NY

Trichogramma ostriniae, an egg parasitoid from China, has proven to be effective against European corn borer, Ostrinia nubilalis, infestations in sweet and field corn in New York and elsewhere in the northeastern US. Inoculative releases of 75,000 females per hectare are adequate to establish the parasitoid in commercial fields. Released wasps successfully reproduce and persist until harvest. Fifty to eighty percent of egg masses in the field are parasitized and damage is typically reduced by 50%. This species is now commercially available. Results obtained from the 2001 and 2002 research seasons will be presented.

Species 1: Hymenoptera Trichogrammatidae Trichogramma ostriniae
Species 2: Lepidoptera Crambidae Ostrinia nubilalis
Keywords: inoculative release, egg parasitoid

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