This is the third report on the progress being made in erosion control in western Iowa. Soil losses have been reduced, but they still exceed levels that operators themselves believe necessary to maintain soil productivity.
Blase, Melvin G. and Timmons, John F.
"Why Do We Let Our Soil Erode?,"
Iowa Farm Science: Vol. 15
, Article 4.
Available at: http://lib.dr.iastate.edu/farmscience/vol15/iss5/4