WELCOME TO THE INVASIVE WEED IMPACT CALCULATOR
Developer: Dr. Matthew Rinella
Data contributors:
Eugene Arnold, Donald Bedunah, Keith Boggs, Clinton Carlson, Donald Graham, Steven Gylling, David Hein, James Jacobs, Daniel Lucas, Rodney Lym, Marilyn Marler, John Maron, John Martin, Bruce Maxwell, Calvin Messersmith, Stephen Miller, Monica Pokorny, Chad Prosser, Norman Rees, Peter Rice, Luke Samuel, Roger Sheley, Kevin Sedivec, Sandra Shinn, Jim Story, Tony Svejcar, Donald Thill, Brian Thrift, Christopher Toney, Rajendra Velagala
It is important to quickly spray or hand-pull small weed infestations before they exand.  The best method for managing large weed infestations depends on the severity of the weed's impacts.  This easy-to-use website site-specifically estimates spotted knapweed and leafy spurge impacts on grassland biomass production and wildlife and livestock forage.  The weed impact calculations help land managers identify appropriate weed management option for their situation.
To view a technical paper describing the calculator, click here.