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The Cranberry Rootworm: Adult Seasonal History, and Factors Affecting Its Status as a Pest of Woody Ornamentals in Louisiana

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During the past 5 yr, Rhadopterus picipes (Olivier) has caused substantial losses in sales of plants in the largest nursery area of Louisiana. Some ornamentals in home lawns also have been heavily damaged. Most adults emerge from the soil during late Apr. through the middle of May. Soon after emergence, beetles begin feeding on new foliage. A few beetles emerge as late as Sept. After feeding for ca. 2 wk, the beetles mate and females move under leaf litter to oviposit. Females deposit an average of 150 eggs in clusters of 12–102. Larvae eclose in 9–11 days and burrow in the soil where they feed on roots. Injury caused by larvae has not been observed. Reduced shade, removal of leaf litter, and delay in time of outplanting significantly reduced feeding activity of beetles.

Document Type: Research Article

Publication date: February 1, 1980

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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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