Diseases Diagnosed in September 2011

    Diseases Diagnosed in September 2011

    Verticillium Wilt

    Scientific Name: Verticillium dahliae.

    verticilllium wilt

    Photo(s): Howard F. Schwartz Colorado State University, Bugwood.org

    Situation: Peppermint

    County: Cache

    Fact Sheets: Utah Pests IPM


    Summer Patch

    Scientific Name: Magnaporthe poae

    summer patch

    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


    Early Blight

    Scientific Name: Alternaria solani

    early blight

    Photo(s): Early blight affecting potato plant, Howard F. Schwartz, Colorado State University, Bugwood.org.

    Situation: Tomato plants

    County: Uintah

    Fact Sheets: University of California Davis


    Necrotic Ring Spot

    Scientific Name: Ophiosphaerlla korrae

    nectrotic ring spot

    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


    Leaf blight

    Scientific Name: n/a

    leaf blight

    Photo(s): Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org

    Situation: Yard

    County: Davis, Salt Lake, Wasatch

    Fact Sheets: Oklahoma State University


    Leaf Spot

    Scientific Name: Marssonina populi

    leaf spot

    Photo(s): William Jacobi, Colorado State University, Bugwood.org

    Situation: Narrowleaf cottonwood

    County: Uintah

    Fact Sheets: None


    Needle Blight (Dothistoroma)

    Scientific Name: Mycosphaerella pini

    needle blight

    Photo(s): Robert L. Anderson, USDA Forest Service, Bugwood.org

    Situation: Ponderosa Pine, Austrian Pine

    County: Toole, Wasatch

    Fact Sheets: None


    Late blight

    Scientific Name: phytophthora infestans

    late blight

    Photo(s): Howard F. Schwartz, Colorado State University, Bugwood.org

    Situation: Tomato

    County: Cache

    Fact Sheets: None


    Anthracrose

    Scientific Name: Colletotrichum graminicola

    anthracrose

    Photo(s): Paul Bachi, University of Kentucky Research and Education center, Bugwood.org

    Situation: Yard

    County: Salt Lake

    Fact Sheets: None


    Construction Damage

    Scientific Name: N/A

    construction damage

    Photo(s): Joseph O'Brien, USDA Forest Service, Bugwood.org

    Situation: Gamble Oak

    County: Davis

    Fact Sheets: None


    Angular Leaf Spot

    Scientific Name: Psedomonas lachrymans

    angular leaf spot

    Photo(s): Howard F. Schwartz, Colorado State University, Bugwood.org

    Situation: Persian Cucumbers

    County: Salt Lake

    Fact Sheets: None


    Bacterial Leaf Spot

    Scientific Name: N/A

    bacterial leaf spot

    Photo(s): R.K. Jones, North Carolina State University, Bugwood.org

    Situation: Tomato

    County: Cache, Uintah

    Fact Sheets: Utah Pests IPM


    Vein Clearing

    Scientific Name: N/A

    vein clearing

    Photo(s): R.J. Reynolds Tobacco Company Slide Set, R.J. Reynolds Tobacco Company, Bugwood.org

    Situation: Cottonwood

    County: Beaver

    Fact Sheets: None


    Powdery Mildew

    Scientific Name: Sawadaea sp

    powdery mildew

    Photo(s): Powdery mildew on a maple leaf, Andrej Kunca, National Forest Centre - Slovakia, Bugwood.org

    Situation: On ornamental plant

    County: Utah

    Fact Sheets: University of California, Davis

    *Links on the page are not intended as authoritative sources of management information. Established links allow users to view pictures of pests and find general biology and control information; for Utah-specific control recommendations please contact the Utah Plant Pest Diagnostic Lab @ 435-797-2435. Pictures above are not always the exact species identified, but are representative photos of submitted samples.