Greenhouse investigations were conducted to study the effect of girdling by the threecornered alfalfa hopper, Spissistilus festinus (Say), on translocation and nitrogen fixation in soybeans, Glycine max (L.) Merrill. Radiotracer studies with 14C glucose demonstrated that girdling of petioles effectively blocked the movement of assimilates in the phloem. Nodule number, nodule dry weight, root dry weight, leaf area, and nitrogen fixation activity were all significantly reduced by S. festinus feeding injury.
Document Type: Research Article
Publication date: October 1, 1984
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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.