Infestation by Cryptolestes ferrugineus (Coleoptera: Cucujidae) of Newly Harvested Wheat Stored on Three Kansas Farms

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Abstract
The vertical distributions of Cryptolestes ferrugineus (Stephens) in newly harvested wheat, Triticum aestivum L., on three Kansas farms during the first two months of storage were studied to characterize the process of infestation. In three bins, the number of adult C. ferrugineus tended to decrease from top to bottom layers of grain. In the fourth bin, the numbers decreased from top and bottom layers to middle layers. A regression model explained 82.2% of the Variation between bins. These data suggest that most of the insect infestation occurred after the wheat was loaded into the bin instead of before or during loading and that insects then dispersed from the grain surfaces into the grain mass.

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