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Biological control of non-native, invasive weeds involves the relocation of natural enemies, typically insects, from the weeds' native range for release onto invasive populations of the weeds.
Herbicides labeled for aquatic use can be classified as either contact or systemic (see table). Contact herbicides act rapidly on the tissues contacted, typically causing extensive cellular damage and membrane leakage.
Mechanical control techniques may physically damage shoots, roots, or root crowns of plants to the point where they can no longer survive. Alternatively, mechanical control options can remove the entire plant.
David Bubenheim (Co-Director) Senior Research Scientist Earth Science Division, Biospheric Science Branch National Aeronautics and Space Administration (NASA) Biospheric Research Branch, Ames Research Center David.L.Bubenheim@nasa.