Gardening Rhythms

Bacillus thuringiensis, Israel (Bti)

Uses: Larvaside for insects under the following strains….

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Strain Israelensis (This product is produced by these companies and products: Vectobac, Mosquito Dunks, Gnatrol, Bactimos)

Mosquito., Black fly., Fungus gnat.

Strain San diego/tenebrionis (This product is produced by these companies and products: Trident, M-One, M-Trak, Foil, Novodor)

Colorado potato beetle., Elm leaf beetle., Cottonwood leaf beetle.

Strain Kurstaki (This product is produced by these companies and products: Biobit, Dipel, MVP, Steward, Thuricide)

Cabbage worm (cabbage looper, imported cabbageworm, diamondback moth, etc.),Tomato and tobacco hornworm, European corn borer (granular formulations have given good control of first generation corn borers) Alfalfa caterpillar, alfalfa webworm, Leafroller, Achemon sphinx,Tent caterpillar, Fall webworm, Leafroller., Red-humped caterpillar, Spiny elm caterpillar, Western spruce budworm, Pine budworm and Pine butterfly.

How to Use: Use of Bti for control of larvae involves drenching the soil. Bt applied for control of elm leaf beetle or Colorado potato beetle (san diego/tenebrionis strain) is sprayed onto leaves in a manner similar to the formulations used for caterpillars.  Just a pinch in a stil water pond will take care of any larva problems.

Where to Get: Commercial formulations include “Mosquito Dunks”/”Mosquito Bits”. It is also available in bulk liquid or granular formulations for commercial and public agency use. Any hardware store will have a lot of Strain Israel for mosquitoes. For others, you will have go to a supplier.

Bacillus thuringiensis subspecies israelensis (Bti) is a group of bacteria used as biological control agents for larvae stages of certain Dipterans. True flies are insects of the order Diptera (di = two, and ptera = wings). They possess a pair of wings on the mesothorax and a pair of halteres, derived from the hind wings, on the metathorax. .B. thuringiensis was first discovered in 1902 by Japanese biologist Shigetane Ishiwatari.

Bti produces toxins which are effective in killing various species of mosquitoes, fungus gnats, and blackflies, while having almost no effect on other organisms. Indeed this is one of the major advantages of B. thuringiensis products in general is that they are thought to affect few non-target species.

This entry was posted on Monday, June 20th, 2011 at 11:15 pm. It is filed under Natural Pesticides and tagged with Achemon sphinx, Alfalfa caterpillar, alfalfa webworm, Black fly, Bti, Cabbage looper, Cabbage worm, Colorado potato beetle, corn borers, Cottonwood leaf beetle, diamondback moth, Elm leaf beetle., European corn borer, Fall webworm, Fungus gnat, imported cabbageworm, Leafroller, Mosquito., Pine budworm, Pine butterfly, Red-humped caterpillar, Spiny elm caterpillar, Tent caterpillar, tobacco hornworm, tomato, Western spruce budworm. You can follow any responses to this entry through the RSS 2.0 feed.