Comparison of Pneumatic and Manual Probe Sampling of Kansas Farm-stored Grain Sorghum

Authors: Meagher, Robert L.; Mills, Robert B.; Rubison, Michael R.

Source: Journal of Economic Entomology, Volume 79, Number 1, February 1986 , pp. 284-288(5)

Publisher: Entomological Society of America

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Six circular metal farm bins containing grain sorghum were sampled in northeastern Kansas with a pneumatic grain sampler. The grain mass ranged in volume from 109.6 to 429.6 m3. A stratified random sampling method was used. Samples were analyzed in the laboratory for species and numbers of live insects, percentages of fungal-invaded kernels, and percent moisture content Cryptolestes ferrugineus (Stephens) was the only insect species collected in all six bins. High numbers of C. turcicus (Grouvelle) were collected, while few C. pusillus (Schönherr) were found. In five of six bins, more live insects were found at or near the floor; in four, moisture content was greater on the floor. In comparisons with a manual gravity-fill probe, equal numbers of insects and broken grain were collected. Regression analysis was used to propose practical sampling schemes in which manual probes were used to sample upper areas of the grain mass.

Document Type: Research Article

Publication date: February 1, 1986

More about this publication?
  • 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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