Soil persistence of amicarbazone

Amicarbazone herbicide is a new product in development by Arystia Lifesciences. Amicarbazone could provide extended residual control in turf due to weed root absorption. Golf courses in Georgia are highly maintained and thus this herbicide could potentially be utilized for weed control. UGA crop and soil scientists studied the effect of soil pH, clay and organic matter on seed-back intervals for creeping bentgrass following amicarbazone application. These data support the concept that amicarbizone is more persistent when pH was greater than 7.0 and resulted in prolonged bentgrass injury. If this herbicide is to be utilized in Georgia turf in creeping bentgrass, then applicators must know the soil pH and take care to minimize the potential for injury.