Biological control of water lettuce: early observations
Abstract
Water lettuce, Pistia stratiotes, probably originated from South America. It has been spread throughout the tropical and subtropical countries as an aquarium or ornamental plant. It is not as serious a weed as Salvinia molesta or water hyacinth, Eichhomia crassipes, but it could become a nuisance on fresh water rivers and lakes in Papua New Guinea.
