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Alligatorweed (Alternanthera philoxeroides) (1)
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IPRL results for the first biological control agent Agasicles hygrophila released against an aquatic weed: Jacksonville, April 1965

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alligatorweed flea beetle (Agasicles hygrophila)

 

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No Biological control

Annual costs (pre-1965) using herbicides before the addition of biological control: $1,000,000

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Biological control

Annual costs today using herbicides plus biological control: $20,000