Grains have a shelf life just like any food product. Shelf life is primarily determined by moisture content and temperature. It is gradually used through the time before use, and each operation or storage regime consumes a portion of the life.
Iowa State University
Hurburgh, Charles R. and Elmore, Roger W., "Corn Quality Issues in 2008 – Storage Management" (2008). Integrated Crop Management News. 747.
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