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| A weed scientist at the University of Illinois says the first case of glufosinate resistance in waterhemp has been confirmed in the United States. |
BrownfieldAgNews reports:
Urbana, IL — A weed scientist at the University of Illinois says the first case of glufosinate resistance in waterhemp has been confirmed in the United States.
Dr. Aaron Hager tells Brownfield, “We have confirmed glufosinate resistance, or resistance to things like Liberty, Liberty Ultra, and Interline, in about four populations of waterhemp here in Illinois. So now it’s evolved resistance to herbicides from eight different chemical classes.”
He says it’s not a surprising development considering the increased reliance on glufosinate in recent years, as other chemicals have lost efficacy.
“We need to do everything we can to try to optimize the performance.” He says, “Bright sunshine, high humidity, high temperatures, generally speaking, around 20 gallons of carrier to the acre, and medium-sized droplets. All those things really go toward enhancing the ability of glufosinate to perform as it really should.”
Hager says not all glufosinate failures are due to resistance, but farmers need to limit waterhemp seed production to reduce the likelihood of future generations developing it.
