USE OF GINKGOLIC ACIDS IN PREPARING BIOTIC PESTICIDE FOR KILLING SNAILS AND PREVENTING SCHISTOMIASIS

摘要

The invention provides a new use of 6-alkylsalicylic acids known as ginkgolic acids in preparing biotic pesticide. Particularly, it is directed to the use of ginkgolic acids for killing snails and preventing schistomiasis. The invention makes the most of ginkgo leaves. The invention also relates to a killing-snail agent comprising ginkgolic acids, by which high activity and low toxicity can be achieved. The invention provides furthermore a pesticidal composition for killing snails, which comprises 20-50% ginkgolic acids, 0.1-10%niclosamide, 0.01-1%copper sulfate, and adjuvants. The composition can kill effectively Oncomelania snails as the only host of schistomiasis in china, thus controlling schistomiasis.