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Herbicide
Trials Herbicide trials were performed in the summer of 2000, and again in 2002 to determine the efficacy of different kinds and concentrations of herbicides on treating salvinia in the PVID outfall drain. |
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Biological Control Experiments Summer of 2003 marked the release of the biological control agent Cyrtobagous salviniae in the Colorado River, and accompanying trials on the weevils' survival continue |
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Photos of physical control methods that have been used to reduce salvinia populations. |
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PVID Drain, Walter's Camp and Three Fingers Lake Pictures from the upper part of the Salvinia infestation, August
19, 2003. Views of salvinia in the drain, in backwaters, impacting
docks and boat ramps, and near pumping stations to Three Fingers
Lake. |
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Pictures from the recreation area around Squaw Lake, October 10, 2003. |
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Pictures from below Morelos Dam in Yuma, AZ, and Sonora, Mexico. This infestation is in the terminal section of the river, below all dams, which supplies the natural ecosystem and the Gulf of California. |
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South and West of Morelos Dam, water is diverted to irrigate farmland in the Mexicali Valley of Sonora, Mexico. Salvinia has spread to this area, impacting irrgation pumping stations and water distribution. |
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Photos from May and June, 2004 of the Quechan and East lagoons on the Lower Colorado River, as well as October, 2003 photos of salvinia on the brush gates at Imperial Dam in Yuma. |
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River mile 31, 33, Morelos Dam Photos from July 15, 2004. |
