Evaluation of a Fungicide Application as Influenced by Spray Nozzles for Rhizoctonia Blight Management in Cool-Season Turfgrass Lawns

Abstract Increased utilization of tall fescue (Schedonorus arundinaceus [Schreb.] Dumort) in residential lawns is due to enhanced drought tolerance and minimal problems with insect pests. Rhizoctonia blight (Rhizoctonia solani Kühn) or “brown patch”, however, a persistent disease during summer months. The objective this research was evaluate new fungicide [Mural 0.45WG active ingredients (a.i.’s: azoxystrobin benzovindiflupyr)] for control as influenced by spray nozzle type. applied once Ohio (OH) Pennsylvania (PA), both preventive curative field trials. Three different nozzles were used produce droplet sizes (TurfJet 1/4TTJO4 = extremely coarse; Air Induction 8004 very XR TeeJet 8008 coarse). Disease turfgrass quality evaluated 63-day period after application. fungicide, when using that produced either coarse droplets, provided ≥42 days at sites. Overall, better related also This offers value industry professionals well allowing reductions drift non-target environmental problems. Species study: fescue, Schedonorus (Schreb.) Dumort. Chemicals the Mural (active a.i.’s: benzovindiflupyr).