Estimation of Red Clover Yield Losses Caused by the Clover Root Borer1
Authors: PRUESS, K. P; WEAVER, C. R
Source: Journal of Economic Entomology, Volume 51, Number 4, August 1958 , pp. 491-492(2)
Publisher: Entomological Society of America
Abstract:Reductions in second cutting red clover hay yields caused by the clover root borer, Hylastinus obscurus (Marsham), were estimated by multiple regression analyses. Variables included were number of borers, crown diameter of the root, the square of crown diameter, and foliage weight. Both foliage weight and number of borers per root were found to increase as crown diameter increased, the relationships being curvilinear. Regression of foliage weight on borers, independent of crown diameter, showed an increase in number of borers to result in a decrease in foliage weight. Calculations indicated that an average of 1.5 borers per root resulted in a 5.5 %reduction in yield in Ohio in 1950.
Document Type: Research Article
Publication date: August 1, 1958
- 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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