Strain: Bacillus thuringiensis var. kurstaki strain S1450 (Deposited in the Culture Collection of Embrapa Genetic Resources and Biotechnology)
Group: Microbiological insecticide
Targets: Alabama argillacea, Spodoptera frugiperda, Anticarsia gemmtalis and Chrysodeixis includens.
| Concentration: | 3.7 x 10⁹ viable spores/mL |
|---|---|
| Nature: | Concentrated suspension |
| Embalagem: | 1L and 5L |
This microbiological insecticide acts by ingestion with its target. Insects ingest spores that are encapsulated inside crystals, which infect host insects. After being digested by the insect, the crystals dissolve, releasing toxic proteins that destroy the mesenteric membrane (midgut) and allow bacterial cells to proliferate. The crystals dissolve only under alkaline pH conditions found in the intestines of certain insects such as caterpillars. Various toxins can be released after the crystal has dissolved, but only the so-called Cry (from “crystal”) proteins have the insecticidal effect. Although the insect’s death may take a few days, feeding ceases shortly after ingesting the crystals.
It can be applied as a spray using conventional aerial or terrestrial application equipment, using an adequate volume of water to ensure good coverage. The success of BioBac T in controlling insects is related to the coverage of the leaves during application, so the application must provide an even distribution of the product over all parts of the leaves where the caterpillars will feed.
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