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Effect of Trichogramma Releases on Parasitism of Sugarcane Borer Eggs1

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Abstract:

Releases of insectary-reared adults of the egg parasite Trichogramma fasciatum (Perkins) were made against the sugarcane borer (Diatraca saccharalis (F.) twice weekly over the 2-month period covering its second and third generations. It was hoped that maximum opportunity would be provided for early buildup of high populations of the parasite. The experimental plot .on each of four plantations consisted of one "cut" of cane ranging from 2.7 to 4.4 acres. In addition to the experimental release plot, each plantation had a standard release plot and a nonrelease plot. All were separated by adequate buffer areas. Weekly collections of host eggs from each plot were examined in the laboratory The rate of egg parasitism for all plots showed no significant benefits from the experimental release, although on one plantation parasite populations began to increase somewhat sooner in the experimental plot than ill the check plots.

Document Type: Research Article

Publication date: December 1, 1962

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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