The U.S. Environmental Protection Agency recently granted a 2(ee) recommendation for the use of Xonerate herbicide from Arysta LifeScience for control of annual bluegrass in Kentucky bluegrass.
With the active ingredient amicarbazone, Xonerate is a 70 percent water dispersible granular formulation labeled for control of annual bluegrass in cool- and warm-season grasses.
The new EPA label says Xonerate can be applied twice at the 2 ounce rate in spring at 10- to 21-day intervals, or at 1 ounce every seven days for as many as four applications.
The label also notes that Kentucky bluegrass should be established for at least 12 months before Xonerate is applied.
Xonerate is approved for use in 47 states with the exceptions being California, New York and Washington.
For more information, read the 2(ee) recommendation.