Studies on Chemical Constituents of Ragweed (Ambrosia artemisiifolia L.) Experimental research on molluscicidal effect of endophyte JJ18 from Pseudolarix amabilis Molluscicidal efficacy of Nerium indicum cardiac glycosides on Pomacea canaliculata and its effects on rice seedling STUDIES ON THE MOLLUSCICIDAL CONSTITUENTS OF DIOSCOREA ZINGIBERENSIS SCREENING OF MOLLUSCICIDAL PLANTS Ecotoxicological effects of water extract of Cinnamomum camphora on oncomelania hupensis Research progress on natural products with molluscicide from plants