Alterations of function produced by variations of insect control and maize planting density were studied in a cropping system of maize, Zea mays L., associated simultaneously with cowpea, Vigna unguiculata Walp. Maize. Yields were reduced significantly and cowpea yields were increased significantly in treatments without insect control. Insect damage to maize allowed more sunlight penetration to the lower strata, thus increasing cowpea yields. Maize planting density and insect control. levels interacted to condition yields of both crops. This was considered potentially signnificant for agroecosystem management with reduced agrochemical use.
Document Type: Research Article
Publication date: April 1, 1982
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.