Utah Plant Pest Diagnostic Lab
Diseases Diagnosed in July 2012
Coryneum Blight Shothole
Scientific Name: Wilsonmyces carpophilus
Photo(s): Coryneum Blight images from USU publications
Situation: Peach
County: Grand
Fact Sheets: Utah State University; Colorado State University
Fusarium Stem Rot
Scientific Name: Fusarium sp
Photo(s): Oregon State University Plant Clinic
Situation: Mountain Mahogany
County: Cache
Fact Sheets: None
Necrotic Ring Spot
Scientific Name: Ophiosphaerlla korrae
Photo(s): Necrotic ring spot, Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org.
Situation: Turf
County: Salt Lake County
Fact Sheets: Utah State University; Colorado State University
Slime Mold
Scientific Name: NA
Photo(s): Slime mold fruiting bodies, Joseph LaForest, University of Georgia, Bugwood.org; Slime mold on forest floor, Tarah Kolb, Bugwood.org.
Situation: Forest floor
County: Wasatch
Fact Sheets: Utah State University; Colorado State University; Colorado State University Extension
Summer Patch
Scientific Name: Magnaporthe poae
Photo(s): Summer patch in bluegrass, Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org
Situation: On turf
County: Carbon, Wasatch, Salt Lake
Fact Sheets: Colorado State University; Ohio State University
Tomato Spotted Leaf Virus
Scientific Name: Varies - transported by thrips
Photo(s): TSLV in a tomato taken by Claudia Nischwitz, Utah State University.
Situation: Tomato
County: Cache
Fact Sheets: Utah State University Extension News; Cornell University
Abiotic and non-disease stressors in July
- Drought Damage (Golden Raintree - Washington)
- Herbicide Damage (Ash - Davis)
- Moss (Turf)
- Physiological Leaf Spot of Tulip Trees
Photo/s: Physiological Leaf Spot of Tulip Trees taken by Claudia Nischwitz, Utah State University
Situation: Tulip Tree
County: Salt Lake
Fact Sheets: None
- Wind Damage (Japanese Pagoda - Davis)
- Winter Stress/Injury (Swedish Aspen Tree - Wasatch)
Photo/s: Winter Injury taken by Mike Kuhns, Utah State University.
Situation: Injury in arborvitae
Location: Cache, Weber
Fact Sheets: Utah State University; Utah State University