SportsTurf provides current, practical and technical content on issues relevant to sports turf managers, including facilities managers. Most readers are athletic field managers from the professional level through parks and recreation, universities.
Issue link: http://read.dmtmag.com/i/448298
36 SportsTurf | February 2015 www.sportsturfonline.com Active Ingredient(1) Trade Name and Formulation(1) Application Rate Interval(days)(2) Product Label Remarks(2) (oz or fl oz /1000 sq ft)(2) Azoxystrobin Heritage 50WG 0.4 28 Apply as soon as possible after fairy ring symptoms develop. Apply only in 4 gallons water per 1000 sq ft. Add the recommended rate of a wetting agent to the final spray. Severely damaged or thin turf may require reseeding. Fairy ring symptoms may take 2 to 3 weeks to disappear following application. Reapplication after 28 days may be required in some cases. Azoxystrobin Heritage TL 0.8ME 2 28 Same as listed for Heritage 50WG. Azoxystrobin Heritage 0.31G 2 to 4 14-28 Apply as soon as possible after fairy ring symptoms develop. Irrigate with at least 0.5 inches water within 24 hours after application if rainfall is not expected. Severely damaged or thin turf may require reseeding. Fairy ring symptoms may take 2 to 3 weeks to disappear following application. Reapplication after 14-28 days may be required in some cases. Azoxystrobin + Briskway 2.72 0.5 to 0.725 14-28 For preventive control of fairy ring, apply early in the spring prior to the Difenoconazole development of symptoms. Apply in 2-4 gallons of water per 1000 sq ft. Irrigate into the thatch prior to the spray drying. Repeat the application within 14-28 days after the first application Azoxystrobin + Headway 1.39EC 1.5 to 3 14-28 Apply as soon as possible after fairy ring symptoms develop. Apply in 2-4 gals. Propiconazole of water per 1000 sq. ft. Add the recommended rate of a wetting agent to the final spray. Severely damaged or thin turf may require reseeding. Fairy ring symptoms may take 2 to 3 weeks to disappear following application. If area is hydrophobic, use wetting agents and irrigate prior to application(s) of Headway. Reapplication after 28 days may be required in some cases. Azoxystrobin + Headway 1.06G 2 to 2.5 14 Same as listed for Heritage 50WG. Propiconazole 3 to 5.4 28 Fluoxastrobin Disarm 480SC 0.28 to 0.36 21-28 Apply as soon as fairy ring symptoms develop in 4 gallons water per 1000 sq ft or irrigate after application with ¼ inch water. A wetting agent may facilitate penetration. Fluoxastrobin + Disarm C 4.25SC 4.5 to 5.9 21-28 Same as listed for Disarm 480SC. Chlorothalonil Flutolanil Prostar 70WG 2.2 21-28 Preventive (2.2 oz): apply in 10 to 50 gallons of water per 1000 sq ft, may suppress (or Prostar 70WP) 4.5 30 development of fairy ring caused by various basidiomycete pathogens. A second application may be made at 21-28 day interval using the same dosage rate. Curative (4.5 oz): apply in 10 to 50 gallons of water per 1000 sq ft, may sup press development of fairy ring caused by various basidiomycete pathogens. Application should be made to the affected area at the first sign of ring development (greening, death of turf, mushrooms). Symptom suppression may be temporary and symptoms may recover. In those cases, a second application at 4.5 oz per 1000 sq ft is suggested, not less than 30 days after the first application. Aerification prior to subsurface applications has been beneficial in some cases. Use of a nonionic surfactant in combination with Prostar 70WG is recommended. Treated areas should be irrigated prior to and after application with sufficient water to maintain growth of turf. Disease control is improved if turf is maintained at optimum fertility levels after symptom development. Turf that has been damaged extensively by fairy ring development may have to be reseeded. Do not treat more than 10,000 sq ft per acre of turf area. Metconazole Tourney 50WDG 0.37 21 Apply as soon as possible after first symptoms appear. Apply in a volume of 4 gals per 1000 sq ft. For optimal control reapply after 21 days. Symptoms may take several weeks to disappear following application. Polyoxin-D Affirm 11.3WG 1 oz 7 Make two to three applications on a 7-day interval Schedule. Use a penetrating wetting agent. Immediately following application, water-in the treatment with sufficient irrigation (1/8-1/4") to wet the active root zone. Pyraclostrobin Insignia 20WG 0.9 28 Apply as soon as possible after fairy ring symptom development. Fairy ring symptoms may take 2 to 3 weeks to disappear following application. Use 4 gallons of spray volume and appropriate soil wetting agent at time of application. Reapplication after 28 days may be required. Pyraclostrobin + Honor 28WG 1.1 28 Apply as soon as possible after fairy ring symptom development. Fairy ring Boscalid symptoms may take 2 to 3 weeks to disappear following application. Use 2 to 4 gallons per 1000 sq ft spray volume and appropriate soil wetting agent at time of application. Reapplication after 28 days may be required. Provide short irrigation cycle directly following treatment to move fungicide through thatch. Field Science