Calcium Treatment of Apples and Potatoes to Reduce Postharvest Decay. Willliam S. Conway, USDA-ARS, Beltsville Agricultural Research Center, Beltsville, MD. Carl E. Sams, University of Tennessee, Knoxville; Raymond G. McGuire, USDA-ARS, Subtropical Horticulture Research Station, Miami, FL; Arthur Kelman, North Carolina State University, Raleigh. Plant Dis. 76:329-334. . This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1992. DOI: 10.1094/PD-76-0329.