Greenhouse studies were conducted to quantify the effects of feeding activity of selected densities of third instars, combined fourth and fifth instars, and adults of Euschtstus servus (Say) and E. variolarius (Palisot de Beauvois) on VE, V2, and V4 corn (Zea mays L.) Exposures of VE and V2 corn to all densities of third, fourth and fifth instars, or adults for 96 h resulted in termination of growth, reduced growth, or mortality of plants. There was no mortality of V4 plants. Third instars through adults caused tillering of VE and V2 corn, but only fourth and fifth instars and adults caused tillering of V4. Third instars through adults caused significantly shorter mean extended leaf heights of all growth stages. They also caused significantly lower dry root and aboveground weights of VE and V2 corn. Only adults caused significantly lower dry root weights of V4 plants. Corn growth stages and stink bug densities apparently affect the intensity of damage and may be important factors in assessing damage and determining control strategies.
Document Type: Research Article
Publication date: June 1, 1988
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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.