Which of the following is not used as a biopesticide?
Biopesticides are certain types of biocontrol agents derived from natural materials such as animals, plants, bacteria, and some minerals.They are used to control pests. For example, microbes like Bacillus thuringiensis are used to target cotton bollworm and Trichoderma hamatum is very robust and can confer pest resistance in the uncontrolled plant’s natural environment or in-vivo. Nucleopolyhedrovirus is a virus that affects insects, predominanty moths and butterflies and is used to kill them. All the aforementioned agents are used as biopesticides generally however, the bacterium Xanthomonas campestris is the causative agent of a plant disease - black rot of cabbage. It is in itself a pest and cannot be used as an effective pesticide.