ABSTRACT
Results of laboratory and field experiments have shown that the use of introduced insects alone frequently does not result in a satisfactory reduction of floating alligator weed mats, and application of herbicides is necessary. This chapter illustrates the use of an integrated approach for alligator weed management along the southeastern coast of the United States. Alligator weed varies in different locations, growing as a terrestrial, rooted-immersed, or completely free-floating plant. Effectiveness of alligator weed control will be determined by the degree of flea beetle feeding activity on the surface vegetation. The degree of control desired determines the most suitable method for alligator weed management. The suggested program is based on research conducted in greenhouse and field experiments in Florida, Georgia, and South Carolina. In coastal rivers in the southeastern states floating alligator weed mats may not be controlled by the program in some cases because there is a mechanical movement of mats from canals or impoundments into the river system.
