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Abstract

The impact of identity preservation (IP) for genetically modified grains (GMOs) on the grain handling system for a typical region in the Eastern Corn Belt is examined. A cost minimizing linear programming model of the transshipment system from farms to grain elevators to grain users tracks shipments and costs through the marketing system. This study compares two different grain segregation strategies: segregating grain within the elevator and designating specific elevators as IP-only facilities. As the cost per unit for grain segregation increases, the designated plant strategy becomes the most cost efficient strategy.

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