The invention relates to a botanical
biopesticide. The botanical
biopesticide is an aqueous
emulsion composed of the extracts of
plant active ingredients and auxiliaries, wherein the
plant active ingredients include the extracts of
sophora alopecuroide,
cynanchum komarovii and thymus serpyllum, and the water extracts of onion, garlic and rheum; the auxiliaries include white
sugar,
turpentine oil and an emulsifying agent. Prepared from the reproducible
edible plants used as the raw materials, the botanical
biopesticide is
pollution-free, has no
pollution on the environment, complies with the
pollution-free green ecological agricultural input norms and also has no
withdrawal time. The botanical biopesticide is prepared compatibly from the Chinese herbal medicines, namely
sophora alopecuroide,
cynanchum komarovii and thymus serpyllum, added with the garlic as the major ingredient, onion as the auxiliary ingredient and rheum as the initiator; in the formula, the onion, similar to the garlic, contains a plurality of biological sulfides, and the sulfides are combined with the sulfides in the garlic to generate new
allicin under the action of the
alliinase. As the rheum and table vinegar are added, the
efficacy and stability of the botanical biopesticide are further improved and the botanical biopesticide can be preserved for a long time without losing
efficacy; the quality of crops can be improved.