Hydrilla’s Resistance to Herbicide Gives Scientists a New Challenge

Scientists with the Agricultural Research Service (ARS) and a private firm have encountered a troubling turn of events in the fight against an invasive weed that’s choking many waterways in the southeastern United States.

The researchers at ARS’ Natural Products Utilization Research Unit in Oxford, Miss., and SePro Corp., a Carmel, Ind.-based plant protection management firm found that a form of hydrilla (Hydrilla verticillata) has developed resistance to fluridone, the most effective herbicide against it.

For more of this article by Luis Pons, visit www.ars.usda.gov/is/pr/2005/051101.htm?pf=1.

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