TY - JOUR
T1 - Evaluation of a Fungicide Application as In£uenced by Spray Nozzles for Rhizoctonia Blight Management in Cool-SeasonTurfgrass Lawns
AU - Nangle, Edward
AU - Morris, Tyler
AU - Fidanza, Michael
AU - Nolan, Gary
AU - Nairn, Michael
AU - Brey, Daniel
N1 - Publisher Copyright:
© 2023 Horticultural Research Institute.
PY - 2023
Y1 - 2023
N2 - 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, is a persistent disease of tall fescue lawns during summer months. The objective of this research was to evaluate a new fungicide [Mural 0.45WG active ingredients (a.i.’s: azoxystrobin and benzovindiflupyr)] for Rhizoctonia blight control in tall fescue as influenced by spray nozzle type. The fungicide was applied once to tall fescue in Ohio (OH) and Pennsylvania (PA), in both preventive and curative field trials. Three different spray nozzles were used to produce different spray droplet sizes (TurfJet 1/4TTJO4 ¼ extremely coarse; Air Induction 8004 ¼ very coarse; and XR TeeJet 8008 ¼ coarse). Disease control and turfgrass quality were evaluated for a 63-day period after application. The fungicide, when applied using spray nozzles that produced either coarse or very coarse droplets, provided 42 days of preventive and curative disease control at both sites. Overall, better turfgrass quality was related to better disease control also at both sites. This offers value for turfgrass industry professionals as well as allowing for reductions in drift and non-target environmental problems.
AB - 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, is a persistent disease of tall fescue lawns during summer months. The objective of this research was to evaluate a new fungicide [Mural 0.45WG active ingredients (a.i.’s: azoxystrobin and benzovindiflupyr)] for Rhizoctonia blight control in tall fescue as influenced by spray nozzle type. The fungicide was applied once to tall fescue in Ohio (OH) and Pennsylvania (PA), in both preventive and curative field trials. Three different spray nozzles were used to produce different spray droplet sizes (TurfJet 1/4TTJO4 ¼ extremely coarse; Air Induction 8004 ¼ very coarse; and XR TeeJet 8008 ¼ coarse). Disease control and turfgrass quality were evaluated for a 63-day period after application. The fungicide, when applied using spray nozzles that produced either coarse or very coarse droplets, provided 42 days of preventive and curative disease control at both sites. Overall, better turfgrass quality was related to better disease control also at both sites. This offers value for turfgrass industry professionals as well as allowing for reductions in drift and non-target environmental problems.
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U2 - 10.24266/0738-2898-41.2.40
DO - 10.24266/0738-2898-41.2.40
M3 - Article
AN - SCOPUS:85163382519
SN - 0738-2898
VL - 41
SP - 40
EP - 47
JO - Journal of Environmental Horticulture
JF - Journal of Environmental Horticulture
IS - 2
ER -