Although most of these agents attack insect species (called entomopathogens products referred to as bioinsecticides), there are also microorganisms (i.e., fungi) that control weeds (bioherbicides). Microbial pesticides and other entomopathogens: pesticides that contain microorganisms, like bacteria, fungi, or virus, which attack specific pest species, or entomopathogenic nematodes as active ingredients. Thus biopesticides cover a wide spectrum of potential products that can be classified as follows: The latter biocontrol agents used to manage potato pests are described in Chapter 14. According to the FAO definition, biopesticides include those biocontrol agents that are passive agents, in contrast to biocontrol agents that actively seek out the pest, such as parasitoids, predators, and many species of entomopathogenic nematodes. It refers to products containing biocontrol agents – i.e., natural organisms or substances derived from natural materials (such as animals, plants, bacteria, or certain minerals), including their genes or metabolites, for controlling pests. The term biopesticides defines compounds that are used to manage agricultural pests by means of specific biological effects rather than as broader chemical pesticides.
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