Definition of milky spore in English:
A bacterial disease of beetle larvae, including the Japanese beetle; the bacterium has been isolated and used in a commercial pesticide sold under the same name.
- Bacillus popilliae, family Bacillaceae
- I'll have to decide between a quick-acting chemical pesticide and an application of milky spore, Bacillus popilla, a bacteria that kills the grubs naturally but may take a couple of years to multiply in the soil and become effective.
- Bt products are effective against the grape berry moth; some growers report success using milky spore as a control for Japanese beetles at the grub stage.
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