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We report for the first time that perennial ryegrass (Lolium perenne L.) cultivars and selections, like those of Kentucky bluegrass (Poa pratensis L.), show differential response to the bluegrass billbug (Sphenophorus parvulus Gyllenhal). The correlation coefficient between injury rating and billbug density in soil and turf grass samples was r = 0.99. Of the 8 ryegrasses, 3 entries, 'H 5-1352,' 'Pennant,' and 'Regal' were found to be minimally damaged (1% to 4%), and the billbug density ranged from 0–0.5/0.09m2.
Document Type: Research Article
Publication date: June 1, 1983
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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.