The European corn borer, which has now assumed the role of "perennial pest" in South Dakota, has been conspicuous by its inactivity during the past few months. However, it is still the major pest of corn in our state. Since last fall the larvae (worms) have been spending their time in the "deep freeze" sleep of their kind of hibernation, hidden away in the snow-blanketed stalks of last years corn fields. This is nature's way of taking care of them during the winter, and all too many of the larvae are now becoming active again.
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South Dakota State College
© South Dakota State University
Spawn, Gerald B., "The European Corn Borer Situation in South Dakota Spring 1952" (1952). Agricultural Experiment Station Entomology Pamphlets (1940-1952). 17.