Trouble expected from insecticide-resistant corn rootworms, corn borers and periodical cicadas plus heavy fly population. Weather to be big factor. Here are analyses and insect control recommendations.
Gunderson, Harold and Stockdale, H. J.
"Insect Prospects for 1964,"
Iowa Farm Science: Vol. 18
, Article 5.
Available at: https://lib.dr.iastate.edu/farmscience/vol18/iss7/5