Brown ring patch and nitrogen
Symptoms of brown ring patch (
Waitea circinata) were dramatically suppressed when ammonium sulfate (0.5 lb N/1000 sq ft) was applied twice, on 4/7 and 4/21/08. Similar results were seen for calcium nitrate and urea. No fungicides were applied. Investigators Frank Wong and Chi-Men Chen (UC Riverside) and Larry Stowell (PACE). Cooperators Wayne Carpenter and Jon Maddern (Torrey Pines GC).
Turf Diseases