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Damage Assessment of the Annual White Grub, Cyclocephala lurida (Coleoptera: Scarabaeidae), in Com and Soybean

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Relative damage to com and soybean seedlings caused by feeding larvae of Cyclocephala lunda Bland was assessed with plants grown in a greenhouse. Single com or soybean plants were grown for 27 d under three densities of larvae (three, six, or nine per plant) and an uninfested check. Soybean seedling emergence, dry root weights, total dry weights, or leaf areas were not different among any of the treatments. Com seedling emergence, dry root weights, total dry weights, or leaf areas were not different among any larval densities except for 1 yr when nine larvae per plant resulted in smaller plants relative to the uninfested plants. This density, however, is several times larger than any that have been observed under field conditions. Results of this 2-yr study strongly suggest that a soil insecticide would not be necessary to protect seedling com or soybean plants from damage by this insect.

Document Type: Research Article

Publication date: February 1, 1994

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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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