Near-north Ontario, French River | Dan... from OMAFRA's web site http://www.omafra.gov.on.ca/english/crops/field/news/croppest/2009/...
Test Weight
Test weight should increase during the drying process. Typically we expect a one pound / bushel increase in test weight per 4 points removal, or 0.25 lb per bushel increase in test weight per point of moisture removal. High drying temperatures will cause moisture to leave quickly and can plump the kernels. Fewer plumped kernels fit into the ½ litre measure, lowering test weight. Plenum temperatures of 95oC or 200oF or above make this problem worse. Lower drying temperature down to 70oC to 80oC or 160oF to 180oF to reduce this problem. Very immature corn may have little if any increase in test weight when dried in a high temperature dryer, even at low plenum temperatures.
* normally expect 0.25 lb / bushel increase per point moisture removed
* drop drying temperatures in 5Co or 10Fo increments and note test weight
* immature corn may have little if any test weight increase through drying
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Corn Test Weight
