Extraction Precision of Sieving and Brine Flotation for Removal of Wheat Midge, Sitodiplosis mosellana (Diptera: Cecidomyiidae), Cocoons and Larvae from Soil
Authors: Doane, J. F.; Olfert, O. O.; Mukerji, M. K.
Source: Journal of Economic Entomology, Volume 80, Number 1, February 1987 , pp. 268-271(4)
Publisher: Entomological Society of America
Abstract:Accuracy of extracting wheat midge, Sitodiplosis mosellana (Géhin), cocoons and larvae from soil samples averaged 99 and 94% for a sieving method and a brine flotation method, respectively. The time required to process bulk soil samples containing wheat midge cocoons was almost twice as long by sieving as by flotation. The time required to process field-collected soil samples containing wheat midge cocoons was also significantly longer by sieving and longer for a silty clay loam than for a very fine sandy loam. Extraction costs varied from $1.65 to $3.99 per sample unit depending upon method and soil type. Sieve extraction is the best method for studies on population dynamics and flotation extraction is the best method for distributional surveys and density estimates.
Document Type: Research Article
Publication date: February 1, 1987
- 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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