Water Drop Impact Angle and Soybean Protein Amendment Effects on Soil Detachment
R.M. Crusea,
B.E. Berghoeferb,
C.W. Mizec and
M. Ghaffarzadehd
a Dep. of Agronomy, Iowa State Univ., Ames, IA 50011 USA
b Crop Systems Specialist, John Deere Company, Minneapolis, MN USA
c Dep. of Forestry, Iowa State University, Johnston, IA USA
d Research Agronomist, Pioneer Hi-Bred International, Inc., Johnston, IA USA

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Fig. 1 Shear strength vs. soybean protein concentration for A and C horizons of both loess and till soil materials, averaged across all matric potentials. Lines represent regression lines fit to each of the four soil types
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Fig. 2 Detachment vs. impact angle for combinations of soybean protein treatments on loess A and C horizons. Lines represent regression lines fit to each of the six treatments
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Copyright © 2000 by the Soil Science Society of America.