Soil moisture conditions have returned to near normal in much of the state. Coupled with known probabilities for rainfall in a given year, it is possibile to forecast general crop prospects for Iowa in 1958.
Shaw, R. H. and Duncan, E. R.
"Crop Prospects for 1958,"
Iowa Farm Science: Vol. 12
, Article 8.
Available at: https://lib.dr.iastate.edu/farmscience/vol12/iss7/8