Through my research, I have found two solutions for our pest control issue. One is insecticidal soap which should be safe for use on our types of vegetables. The other is a BT solution. BT is a disease that occurs in insects that can be controlled and used to infect and eliminate other pests. The following is a list of insects that can be affected by BT.
Insects Controlled by BT
Kurstaki strain (Biobit, Dipel, MVP, Steward, Thuricide, etc.):
- Vegetable insects
- Cabbage worm (cabbage looper, imported cabbageworm, diamondback moth, etc.).
- Tomato and tobacco hornworm.
- Field and forage crop insects
- European corn borer (granular formulations have given good control of first generation corn borers).
- Alfalfa caterpillar, alfalfa webworm.
- Fruit crop insects
- Leafroller.
- Achemon sphinx.
- Tree and shrub insects
- Tent caterpillar.
- Fall webworm.
- Leafroller.
- Red-humped caterpillar.
- Spiny elm caterpillar.
- Western spruce budworm.
- Pine budworm.
- Pine butterfly.
Israelensis strains (Vectobac, Mosquito Dunks, Gnatrol, Bactimos, etc.)
- Mosquito.
- Black fly.
- Fungus gnat.
San diego/tenebrionis strains (Trident, M-One, M-Trak, Foil, Novodor, etc.)
- Colorado potato beetle.
- Elm leaf beetle.
- Cottonwood leaf beetle.
Colorado State University Extension entomologist and professor, bioagricultural sciences and pest management.
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