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Effects of Dipel wettable powder for foliage protection against western spruce budworm 1 and 2 years following aerial application Public Deposited
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This evaluation showed that Bt provided measurable foliage protection 1 year after treatment, but no differences were evident after 2 years. We recommend future Bt tests include postspray population measurements in the pupal and/or adult, and/or egg stage, and that foliage protection be measured the following year. The effects of Bt on the population should not be evaluated in the same manner as fast-acting insecticides.
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