Summer Patch & Necrotic Ring Spot
Summer Patch & Necrotic Ring Spot Turfgrass Disease Hot weather diseases (over 75 F) When will it appear? Late spring-early summer The fungus attacks soil at 70F Excessive watering, heat
November 18, 2019
Category: Turfgrass Disease Database
Pythium Blight
Pythium Blight Turfgrass Disease Hot weather diseases (over 75 F) When will it appear? July-August Hot: day temp >85F night temp >75F Wet turf and high humidity Poorly drained soils,
November 18, 2019
Gray Leaf Spot
Gray Leaf Spot Turfgrass Disease Hot weather diseases (over 75 F) When will it appear? End of July-August Hot, Humid Weather Most severe in newly established plantings Prolonged hot (82-90F)
November 18, 2019
Rust
Rust Turfgrass Disease Hot weather diseases (over 75 F) When will it appear? July- October Warm temperatures (70-95F) Humid Water, heat or other stresses will cause symptoms to be more
November 18, 2019
Helminthosporium leaf spots
Helminthosporium Leaf Spots Turfgrass Disease Warm weather diseases (60-75 F) When will it appear? Caused by many different kind of fungi Leaf spot may appear during most of the growing
November 18, 2019
Dollar Spot
Dollar Spot Turfgrass Disease Warm weather diseases (60-75 F) When will it appear? June-September Hot, humid days cool nights Dew Nitrogen Deficient Plants affected? All grasses Most serious on closely
November 18, 2019
Powdery Mildew
Powdery Mildew Turfgrass Disease When will it appear? April-May, October-November Shaded, wind-protected turf Cool/Warm (61-77F) Tall turf (>3inches) Plants affected? Bluegrass (Kentucky & Annual) Fine-leaf Fescues Symptoms? Circular patches Diffuse
November 18, 2019
Yellow Patch
Yellow Patch Turfgrass Disease Cool weather diseases (45-60 F) When will it appear? Spring or fall Cool temperatures (40-65F) Moist conditions Plants affected? Creeping bentgrass and bluegrass are most susceptible
November 18, 2019
Fair Rings
Fair Rings Turfgrass Disease Cool-weather diseases (45-60 F) When will it appear? April- October Lush Grass Thick Thatch Rings will develop in the same areas each year Plants affected? All
November 18, 2019
