Spruce Budworms Handbook: Guidelines for the Operational Use of Bacillus Thuringensis Against the Spruce Budworm
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- Morris, Oswald N.
United States Department of Agriculture, Forest Service, Cooperative State Research Service. - Dimond, John B.
United States Department of Agriculture, Forest Service, Cooperative State Research Service. - Lewis, Franklin B.
United States Department of Agriculture, Forest Service, Cooperative State Research Service.
The bacterium Bacillus sotto was first isolated in 1902 from drying silkworms in Japan; Later, it was identified as a variety of B. thuringenesis Berliner, a disease causing agent characterized by rapid paralysis of the gut soon after ingestion of the insect (Burgess, 1981). B. thuringenesis (B.t) occurs naturally inn numerous species if agricultural and forest insects (Morris 1982a) and is the basis of several commercial insect control products available in North America and Erurope.
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