Bacillus thuringiensis (Bt) is currently the largest and most widely used biopesticide. Its main active ingredient is one or several insecticidal crystal proteins (ICPs), also known as delta-endotoxin, which are harmful to Lepidoptera, Coleoptera, Diptera, Hymenoptera, Homoptera, etc. Insects, as well as arthropods such as animal and plant nematodes and acarids, have specific poisoning activities, and are safe for non-target organisms.
Therefore, Bacillus thuringiensis have the advantages of specificity, high efficiency, and safety to humans and animals.
At present, there are more than 100 kinds of commercial preparations of Bacillus thuringiensis , and it is the most widely used, the largest application volume and the best microbial insecticide in the world, so it has attracted much attention.
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