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Is shrink a measurement of volume? Please explain shrink.
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Gerald J.
Posted 10/30/2014 10:00 (#4151990 - in reply to #4151967)
Subject: RE: Is shrink a measurement of volume? Please explain shrink.



The weight loss is mostly water taken out of the corn. !.18% per point. Its 56,000 x 2 x 0.0118 = 1982.4 pounds of water removed. Shrink is primarily the water weight removed. Because there is extra handling the elevators tend to charge more shrink to account for spills and auger grinding. So they often charge 1.4% per bushel per point of drying for shrink. Then they charge for fuel and handling and processing to do the drying. With 56,000 pounds (1000 bushels by weight) delivered at 18% after drying if they didn't over dry they will have 54,017.6 pounds of salable corn. If they are going to store, they are going to have to shrink another point or hope air on the bins will remove another point to prevent molding in the long run.

I posted a link yesterday to a shrink decision tool collection at ISU extension.
Corn drying, shrink, and storage decision tools are available from ISU extension. It is ISU Extension Ag Decision maker Decision Tool A2-32, Corn Drying and Shrink Comparison, available at http://www.extension.iastate.edu/agdm/cdmarkets.html. So says an article on page 26 of last week's Iowa Farmer Today, page 26.

Gerald J.
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