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Treated Hydrilla Grows Back
About 510 acres of Lake Harris were treated with the liquid herbicide Aquathol K by the Florida Fish and Wildlife Conservation Commission. Hydrilla, which was introduced to Florida as an ornamental plant in 1950’s is one of the most persistent invasive species in the state.

After the treatment in 2011, the hydrilla has grown back again this year forming thick mats of vegetation. It is encroaching the native shoreline and is growing towards residential docks and the open water. Previously, Florida officials used fluridone to control hydrilla, but it was soon discovered that the aquatic invasive species was becoming resistant to it. Now aquatic-plant managers largely use Aquathol, although according to Jim Cuba, an associate professor at the University of Florida, hydrilla is showing signs of resistance to that herbicide as well.

 
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Invasive Plants Get Approval to Be Grown as Biofuel Crop - If the hottest new plant grown as a biofuel crop is approved based solely on its greenhouse gas emission profile, its potential as the next invasive species may not be discovered until it’s too late.


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