Association Between Sugarbeet Root Yield and Sugarbeet Root Maggot (Diptera: Otitidae) Damage
Authors: CAMPBELL, L. G.; ANDERSON, A. W.; DREGSETH, ROBERT; SMITH, L. J.
Source: Journal of Economic Entomology, Volume 91, Number 2, April 1998 , pp. 522-527(6)
Publisher: Entomological Society of America
Abstract:Sugarbeet root maggot, Tetanops myopaeformis von RÖder, is a major insect pest of sugarbeet throughout much of North America. Root maggot damage is routinely rated on a 0 (no damage) to 5 (severe damage) scale. In 42 trials, the relationship between visual damage and root yield was examined. The mean damage rating in the absence of insecticides was 3.3 ± 0.4, compared with 1.7 ± 0.7 for the highest yielding treatment in each trial. Mean root yield of the highest yielding treatment in each trial was 48.8 8.9 Mg ha-1, compared with a mean of 29.0 ± 12.5Mg ha-1 when no insecticides were applied. Regression analyses within individual trials indicated that the yield loss associated with each increment of the damage rating scale fluctuated widely, ranging from near 0 to 15.7 ± 2.42 Mg ha-1 The percent yield reduction in the absence of insecticides ranged from 9.8 to 83.6% when compared with the treatment providing the most effective control in each test. These results are useful in estimating losses, developing recommendations, and providing a standard of comparison for alternative control strategies.
Document Type: Research Article
Publication date: April 1, 1998
- 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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