Bacillus thuringiensis var. Thuringiensis Berliner, encapsulated by several processes, retained its viability and pathogenicity for the European corn borer, Ostrinia nubilalis (Hübner). In field tests the capsule formulation was applied dry and in spray form, giving good control in both. An emulsifiable formulation of the bacterium also gave good corn borer control.
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Raun et al. (1966) studied this question.