European Corn Borer Management
Derrick, M. Ellison
The European com borer is an introduced insect species that significantly affects com, (seed-, field-, pop- and sweet-) as well as many vegetables and other cash crops such as sorghum and cotton. It came to North America during the early 1900's, possibly in broomcorn imported from central Europe. It was first found in the north central states in 1921. During most of this early history, this moth species had one generation per year. A two-generation per year population came into Illinois in 1939, Iowa in 1942, Nebraska in 1944 and South Dakota in 1946. More recently, this two-generation type has spread into northern Minnesota, North Dakota and the Canadian provinces of Manitoba, Saskatchewan and Alberta (Showers et al. 1989). Now, a partial third-generation usually occurs annually in Illinois, Iowa, and Nebraska. This increase of annual generations is believed to be related to significant plantings of long-season com hybrids (Showers, in press).