The Echinochloa genus contains two of the world's top five worst weeds. persistence and weediness spp. are partly due to its seed longevity variable dormancy. In USA, specifically in Arkansas, multiple species infest same field many cases. Persistence could vary across dormancy affects infestation level. Studies were conducted evaluate production potential State. Ninety-four accessions characte...

Bioassay-directed fractionation of a CH(2)Cl(2)-MeOH (1:1) extract of the aerial parts of Flourensia cernua led to the isolation of three phytotoxic compounds, namely, dehydroflourensic acid (1), flourensadiol (2) and methyl orsellinate (3). Dehydroflourensic acid is a new natural product whose structure was established by spectral means. In addition, the known flavonoid ermanin and seven hithe...