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| After the beetle outbreak, the same area looked like this. June 15, 1939 was the date of the big blowdown. Winds reaching a velocity of 70 miles an hour swept across the forests of Colorado and in their wake lay thousands of toppled Engelmann spruce trees. These conditions were ideal for the Engelmann spruce beetle, a native of Colorado forests, to reproduce in tremendous numbers. First they attacked the bark of the toppled trees; later, they spread to the standing trees, destroying more than 4 billion board feet of timber before the outbreak was brought under control.
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Clemson University Cooperative Extension Service offers its programs to people of all ages, regardless of race, color, gender, religion, national origin, disability, political beliefs, sexual orientation, marital or family status and is an equal opportunity employer. Clemson University Cooperating with U.S. Department of Agriculture and South Carolina Counties, Extension Service, Clemson, S.C. Issued in Furtherance of Cooperative Extension Work in Agriculture and Home Economics, Acts of May 8 and June 30, 1914.
R.G. Bellinger, Extension Pesticide Coordinator, bbllngr@clemson.edu
Site maintained by Rachel Rowe | Pesticide
Information Program | Entomology Program
Entomology, Soils, & Plant Sciences Department | Cooperative
Extension Service
Clemson
University |
April 15, 2008
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