Natural resource and invasive species specialists observe test plots utilizing endogenus biocide, or endocide, to control the invasive species giant salivinia at the Red River Waterway Research Center in Lena, Louisiana. Endocide refers to an agent derived from a source that does not cause apparent poison in normal growth of the producing plant, but, when exposed, has biocidal effects in that species. The concept, developed by researchers at SFA’s National Center for Pharmaceutical Crops, is species specific and does not negatively affect surrounding flora or fauna.