Management Practices for Cranberry Girdler (Lepidoptera: Pyralidae) in Douglas-Fir Nursery Stock

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Abstract:

The cranberry girdler, Chrysoteuchia topiaria (Zeller), was shown to be a pest of Douglas-fir seedlings, Pseudotsuga menziesii (Mirb.) Franco, grown in nurseries. The girdler was capable of reproduction in nursery beds where feeding larvae partially or completely girdled the taproot of seedlings. Pheromone traps indicated that grasslands bordering nurseries and not nursery beds were the primary source of adults. In addition to Douglas-fir, several species of true-fir were damaged by larvae, but no feeding damage was observed on pine, cedar, hemlock, or spruce. Insecticides applied to control adults and larvae effectively reduced the incidence of damage. When possible, a pest management program should include grasslands bordering the nursery, control of grass weeds, and use of a nonhost cover crop in the nursery.

Document Type: Research Article

Publication date: August 1, 1983

More about this publication?
  • 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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