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Jon J Tollefson

Jon J Tollefson

  • Professor Emeritus
  • In Memoriam
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.


  • B.A., Gustavus Adolphus, 1967
  • Ph.D., Entomology, Iowa State University, 1975

Area of Expertise

  • Ecology of Corn Insects