Cover: Aerial view of typical sugarcane (Saccharum officinarum L.) yield trials and commercial cultivar increase plots planted as part of the cooperative variety development program by USDA-ARS, the University of Florida, and the Florida Sugar Cane League, Inc. at Canal Point, FL. See Stafne et al., "A Relational Database for Agronomic and Genealogical Sugarcane Data: An Adaptable Prototype," p. 923-928. Photo by James M. Shine, Jr.