BTK (Bacillus Thuringiensis SSP Kurstaki) is a biological insecticide which acts selectively against the larvae of certain harmful insects. Here’s how it works:
Specific action: BTK mainly targets lepidoptera larvae, such as caterpillars and butterflies. It does not harm other organisms, such as bees, birds or humans.
Ingestion: When larvae ingest BTK, the proteins it contains bind to their intestines. This disrupts their digestion and leads to their death.
Protein crystals: BTK produces protein crystals that are toxic to larvae. These crystals dissolve in the insects’ gut, releasing toxins that interfere with their metabolism.
Rapid effects: Larvae exposed to BTK stop feeding and generally die within 1 to 3 days of ingestion.
In summary, BTK is an effective and environmentally friendly way to control pests without harming other species.
