1. Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66506, U.S.A.
2. Department of Plant Pathology, University of Minnesota, Saint Paul, MN 55108, U.S.A.
3. Department of Plant Pathology, Kansas State University, Manhattan, KS 66506, U.S.A.
4. USDA-ARS, CGAHR, Stored Product Insect and Engineering Research Unit, Manhattan, KS 66502, U.S.A. Mention of trade names or commercial products in this publication is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the U.S. Department of Agriculture. USDA is an equal opportunity provider and employer.