Organic insecticide B.T. - Knowledgebase Question

Eunice, NM
Question by fullera5
July 19, 1998
I have heard alot about this organic B.T. What is its name? It was so long all I could remember were the initials. Is it good for aphids, and their eggs?

Answer from NGA
July 19, 1998


Bt. is short for Bacillus Thuringiensis, a bacterium that acts as a stomach poison when eaten by caterpillars. It has no effect on aphids or their eggs. One of its important attributes is that Bt doesn't affect beneficial insects, but works very well against caterpillars. When you use Bt (Dipel is a trade name), expect that the caterpillars will continue to feed until the bacterium has time to react.

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