Jon J Tollefson

Professor Emeritus
In Memoriam
Jon Tollefson

Jon Tollefson's work was in the area of corn rootworm management. The corn rootworm is the most important insect attacking corn in the North American Corn Belt. His research emphasized the development of reliable, functionable sampling techniques and practical economic thresholds.

Area of Expertise: 
Ecology of Corn Insects
B.A., Gustavus Adolphus, 1967
Ph.D., Entomology, Iowa State University, 1975