Sampling Corn and Soybeans I. Probing Methods
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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
In tests conducted at Iowa country elevators, mechanical grain probes were compared with the official hand probe. Comparisons were based on the percentage of foreign material (FM) in corn and soybean samples. In-load suction probes over-estimated FM by about 1.50 points in corn and 1.05 points in soybeans. Performance of gravity-fill and core probes varied among models and between grains. The core probe was the most accurate design for FM sampling. In a laboratory experiment, the official hand probe collected corn samples with higher BCFM content than known control concentrations. At 3% BCFM, the hand probe collected 3.5%. Hand probe errors increased with the square of BCFM content.
Comments
This article is from Transactions of the ASAE 26 (1983): 930–934. Posted with permission.