The “famous” and “feared” European corn borer has arrived in Iowa. Last summer and fall we found borers in the com fields of 19 counties in eastern Iowa— some of them in the third tier of counties west from the Mississippi River.
Drake, C. J. and Harris, H. M.
"Now We Have Corn Borers,"
Farm Science Reporter: Vol. 4
, Article 6.
Available at: https://lib.dr.iastate.edu/farmsciencereporter/vol4/iss2/6