When grain is harvested in Kentucky at moisture contents exceeding 13 to 14 percent, it must be dried to insure long-term safe storage. The drier the stored grain, the longer it will retain its quality.
Loewer, Otto J.; Bridges, Thomas C.; White, G. M.; and Fehr, Robert L., "Energy in the Home: Grain Drying Performance Evaluation" (1978). Agricultural Engineering Energy Series. 33.