Adjustment of Maize Quality Data for Moisture Content
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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
Historical Names
- 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
Most grain properties are affected by moisture content. Previously developed moisture-correction equations for composition, kernel weight, bulk density (test weight), and breakage susceptibility are summarized. Empirical equations were derived to adjust Stenvert hardness, water absorption index (WAI), and kernel density values for moisture content differences. The data were collected on 10 selected samples from a group of 184 maize hybrids grown at one location in central Iowa. The rate of change of Stenvert hardness with respect to moisture showed a moderate amount of hybrid interaction, but a single exponential function was estimated for all hybrids. WAI exponentially decreased as moisture content increased, with little hybrid effect on rate of change. Kernel density decreased linearly as moisture content increased. Hybrids varied in density but the slope of density on moisture was the same for all hybrids. The moisture correction equations for Stenvert hardness, WAI, and kernel density were used to predict moisture-related quality changes in 10 independent samples of unknown genotype and storage history. The average errors of the equations relative to actual data were not significant.
Comments
This article is from Cereal Chemistry 67 (1990): 292–295.