Vendrell et al. [11] argued that glyphosate would decrease the growth rates of four species of freshwater phytoplankton, Scenedesmus acutus, Scenedesmus subspicatus, Chlorella vulgaris and Chlorella saccharophila. However, Anabaena variabilis, Nostoc punctiforme ATCC 29133, Microcystis aeruginosa PCC 7941 and other algae which have a strong