Field Manipulation of Nomuraea rileyi (Moniliales: Moniliaceae): Effects on Soybean Defoliators in Coastal Ecuador

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Attempts to influence the prevalence of the entomophathogenic fungus NomUTaea rileyi (Farlow) Samson in populations of the velvet bean caterpillar, AnHcaTsia gemmatalis Hiibner (Lepidoptera: Noctuidae), and the soybean looper, Pseudoplusia includens (Walker) (Lepidoptera: Noctuidae), were made in two field experiments with soybean (Glycine Max L.) on Ecuador's humid coastal plain. Larval numbers and mortality were compared in large replicated plots sprayed with either conidia or the fungicides benomyl and chlorothalonil, and in untreated controls. N. rileyi conidia treatment caused a short-lived increase in larval mortality and no change in population levels of velvet bean caterpillar or soybean looper. The fungicide treatment persistently inhibited N. rileyi, causing significantly higher populations of the two defoliators.

Document Type: Research Article

Publication date: December 1, 1990

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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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