Effects of grain moisture, drying methods, and variety on breakage susceptibility of shelled corn as measured by the Wisconsin Breakage Tester
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Since 1905, the Department of Agricultural Engineering, now the Department of Agricultural and Biosystems Engineering (ABE), has been a leader in providing engineering solutions to agricultural problems in the United States and the world. The department’s original mission was to mechanize agriculture. That mission has evolved to encompass a global view of the entire food production system–the wise management of natural resources in the production, processing, storage, handling, and use of food fiber and other biological products.
History
In 1905 Agricultural Engineering was recognized as a subdivision of the Department of Agronomy, and in 1907 it was recognized as a unique department. It was renamed the Department of Agricultural and Biosystems Engineering in 1990. The department merged with the Department of Industrial Education and Technology in 2004.
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1905–present
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- Department of Agricultural Engineering (1907–1990)
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- College of Agriculture and Life Sciences (parent college)
- College of Engineering (parent college)
- Department of Industrial Education and Technology, (merged, 2004)
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Abstract
Breakage susceptibility has become an important quality characteristic of corn traded in the international market. Centrifugal impacters like the Wisconsin Breakage Tester may be used for rapid determination of breakage characteristics of different corn lots. However, the high dependence of breakage on moisture content necessitates testing at or correcting to a common moisture level;The objective of this study was to quantify the effects of grain moisture, drying methods, and variety on breakage susceptibility values of shelled corn and also to derive a generalized moisture correction equation to allow use of testers like the Wisconsin Breakage Tester in grain market channels;Breakage susceptibility of 576 samples was measured by a Wisconsin Breakage Tester. Breakage susceptibility increased by 40% (compounded) per percentage point decrease in grain moisture content. Heated air drying at 93.3(DEGREES)C increased breakage susceptibility of corn by 2 to 3 times. Breakage susceptibility of heated air dried corn increased by 0.35 percentage point per percent increase in harvest moisture within the range of 23% to 32%. Harvest moisture did not affect samples slow-dried by room temperature air;Breakage susceptibility of corn dried by heated air was also found to increase by 0.74 percentage point for every percent point decrease in the dry down moisture level from 18% to 12%;If dried by heated air, Pioneer 3780 was the least susceptible to breakage, while Pioneer 3720 was most susceptible to breakage. Varietal difference in breakage susceptibility was not observed if the corn was slow-dried by room air;A generalized moisture adjustment equation was derived for compensating the variation in breakage values resulting from changes in grain moisture;Breakage susceptibility values were not correlated with sample test weight or particle size of ground corn.