Effects of water quality characteristics on the algicidal property of Alternanthera philoxeroides (Mart.) Griseb. in an aquatic ecosystem

► Alternanthera philoxeroides displayed algicidal effects in the field and the lab. ►The heavy metals reduced the algicidal potential of A. philoxeroides. ►The inorganic anions would enhance algal inhibition of aquatic macrophytes. ►There was a significant relationship between algal suppression and water quality.