The following table of protein, oil and a sum of protein plus oil shows some yearly variation, however, no major trends. Yearly average protein values fall between 34-36%; oil between 17.5-19.5%; and total protein plus oil between 53-55%. As one can see from the map of the US there are some small regional trends, however, these values are small compared to the variability of the crop within a state. Soybean varieties with significantly better than average levels of protein and oil are available.

Naeve, Seth, James H. Orf, and Tracy O’Neill. 2008. Quality of the United States Soybean Crop: 2008. Prepared for the American Soybean Association and the United States Soybean Export Council Quality Mission to Asia, 10-21 November, 2008



(*) Protein and oil values adjusted to a 13% moisture soybean. NIR Analyses were done at Iowa State University (1986-2005) and the University of Minnesota (2006-2008)


(click map to enlarge)