Agricultural and Biosystems Engineering
Journal or Book Title
Applied Engineering in Agriculture
Soybeans received at 12 central Iowa elevators in 1985-1987 were analyzed for protein and oil content. The standard deviation among deliveries to an individual elevator was 1.0 and 0.5 percentage points for protein and oil, respectively. About 15% of samples were above average in both nutrients. About 15% were below average in both nutrients. The rest were above average in one and below average in the other. Although the elevators were located within a 120-km (72-mile) diameter circle, some differences among locations in average protein and oil content were consistent over the three years of this study. Because 70% of the variability in protein and oil occurred at an individual elevator, it will be most important to identify protein and oil at the first point of sale. A near-infrared reflectance analyzer was capable of operating within the constraints of a large country elevator involved in corn and soybean trade.
American Society of Agricultural Engineers
Hurburgh, Charles R. Jr. and Brumm, Thomas J., "Protein and Oil Content of Soybeans Received at Country Elevators" (1990). Agricultural and Biosystems Engineering Publications. 34.