Bacillus Thuringiensis (Bt)

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      application methods The pesticide application method you choose depends on the nature and habits of the target pest, the properties of the pesticide, the suitability of the application equipment, and the cost and efficiency of alternative methods. Your choice is often predetermined by one or more of these factors. Follow label direction for volume recommendations and application rates based on the pest to be controlled and utilize appropriate application tips on equipment.

      What is Bacillus thuringiensis (Bt)?

      Bacillus thuringiensis (Bt) is an insecticide with unusual properties that make it useful for pest control in certain situations. Bt is a naturally occurring bacterium common in soils throughout the world. Several strains can infect and kill insects. Because of this property, Bt has been developed for insect control. At present, Bt is the only "microbial insecticide" in widespread use.

      Bt insecticides are most commonly used against some leaf- and needle-feeding caterpillars. Recently, strains have been produced that affect certain fly larvae, such as mosquitoes, and larvae of leaf beetles.

      In recent years, there has been tremendous renewed interest in Bt. several new products have been developed, largely because of the safety associated with Bt-based insecticides.

      How does Bacillus thuringiensis (Bt) work? (Mode of Action)

      The toxin core travels across the peritrophic matrix and binds to specific receptors called cadherins on the brush border membrane of the gut cells. Toxin binding to cadherin proteins results in activation of an oncotic cell death pathway and/or formation of toxin oligomers that bind to GPI-anchored proteins and concentrate on regions of the cell membrane called lipid rafts. Accumulation of toxin oligomers results in toxin insertion in the membrane, pore formation, osmotic cell shock, and ultimately insect death.

      Keep out of reach of children.

      Always check the label for warnings and instructions for use.

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