Speedzone has Potentialfor Postemergence Goosegrass Controlin Perennial Ryegrass and Creeping Bentgrass

摘要

GOOSEGRASS (Eleusine indica [L.] Gaertn.) is a C4 summer annual distributed throughout the transition zone and can be problematic in sports fields and lawns, but more often is problematic in golf course greens and tees where preemergence (PRE) herbicides are rarely used because of frequent reseeding in-season. The postemergence (POST) herbicides monosodium methanearsonate (MSMA), fenoxaprop-ethyl, or sulfentrazone are commonly used to control goosegrass on golf courses. However, MSMA has recently lost most of its labeled uses (EPA, 2013), while fenoxaprop-ethyl is restricted from use at mowing heights less than 0.25 inch (Anonymous, 2005) and sulfentrazone is restricted from use on golf course greens or tees (Anonymous, 2012).