Download - Turfgrass diseases
3/25/2015
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Turf grass Diseases Kevin Korus
Symptom Distribution
Field
Plant
Leaf
Symptom Distribution – Field Symptom Distribution – Plant
Symptom Distribution – Leaf Brown Patch
• Host(s): Ryegrasses, tall fescue, creeping bentgrass, Kentucky bluegrass
• Pathogen(s): Rhizoctonia solani
plantscience.psu.edu
3/25/2015
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Powdery Mildew
• Host(s): Kentucky bluegrass
• Pathogen(s): Erysiphe graminis
www.ksuturf.org
www.ksuturf.org
Necrotic Ring Spot
• Host(s): Kentucky bluegrass
• Pathogen(s): Ophiosphaerella korrae
extension.umass.edu
Summer Patch
• Host(s): Kentucky bluegrass, Annual bluegrass, Fine fescue
• Pathogen(s): Magnaporthe poae
Pythium Blight
• Host(s): Perennial ryegrass, Creeping bentgrass, Annual bluegrass
• Pathogen(s): Pythium spp.
plantscience.psu.edu
www.apsnet.org
Leaf Spot and Melting Out
• Host(s): Kentucky bluegrass, perennial ryegrass and tall fescue
• Pathogen(s): Bipolaris and Drechslera spp.
plant-pest-advisory.rutgers.edu
Gray Leaf Spot
• Host(s): Perennial ryegrass and tall fescue
• Pathogen(s): Pyricularia grisea
extension.umass.edu
3/25/2015
3
Dollar Spot
• Host(s): All cool-season turf. Most common on bentgrass and bluegrass
• Pathogen(s): Sclerotinia homoeocarpa
www.apsnet.org
www.turfdiseases.org
www.rheebo.com
Anthracnose
• Host(s): Annual bluegrass, creeping bentgrass, most warm and cool season grasses
• Pathogen(s): Colletotrichum cereale
www.msuturfdiseases.net
extension.umass.edu
plantscience.psu.edu
Ascochyta Leaf Blight
• Host(s): Kentucky bluegrass, perennial ryegrass, tall fescue
• Pathogen(s): Ascochyta spp.
www.ext.colostate.edu www.ipm.iastate.edu
Mushrooms/Fairy Rings
en.wikipedia.org
www.parkwaylawn.com
Slime Molds
• Protists
www.ipm.iastate.edu