Diseases Diagnosed in June 2011

    Diseases Diagnosed in June 2011

    Peach Leaf Curl

    Scientific Name: Taphrina deformans

    peach leaf curl

    peach leaf curl

    Photo(s): Young peach tree with leaf curl, William M. Brown Jr., Bugwood.org; (Bottom) Peach leaf curl, Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org.

    Situation: On peach

    County: Davis

    Fact Sheets: Utah State University; University of California Davis; Ohio State University


    Cytospora Cankers

    Scientific Name: Cytospora cincta

    cytospora cankers

    cytospora cankers

    Photo(s): Signs of cytospora cankers on aspen and willow, William Jacobi, Colorado State University, Bugwood.org.

    Situation: On aspen

    County: Davis

    Fact Sheets: Colorado State University; University of Illinois


    Shothole Disease

    Scientific Name: Stigmina sp.

    shothole disease

    Photo(s): Shothole disease, Whitney Cranshaw, Colorado State University, Bugwood.org.

    Situation: On peach

    County: Salt Lake County

    Fact Sheets:


    Wheat Stripe Rust

    Scientific Name: Paccinia striiformis

    wheat strip rust

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

    Situation: On wheat

    County: Juab

    Fact Sheets:


    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


    Fireblight

    Scientific Name: Erwinia amylovora

    fireblight

    fireblight

    Photo(s): Shoot of an apple tree infected with fire blight. Note the "Shepherds crook" and scorched leaves; Fire blight canker on an apple tree. The bacterial ooze seen running down the branch can be transmitted by insects, water, and other methods. Utah State University.

    Situation: Crabapple

    County: Cache

    Fact Sheets: Utah State University; Utah State University


    White Mold (Sclerotiniaceae)

    Scientific Name: Sclerotinia sclerotiorum

    white mold

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

    Situation: Cucumber, Lettuce

    County: Cache

    Fact Sheets: None


    Phytophthora Root Rot

    Scientific Name: Phytophthora sp

    phytophthora root rot

    phytophthora root rot

    Photo(s): (Top) Apple tree infected with root rot; (Bottom) Pepper plants showing signs of being infected with phytophthora root rot, William M. Brown Jr., Bugwood.org.

    Situation: Laurel

    County: Salt Lake County

    Fact Sheets: Alabama Cooperative Extension System


    Root Rot

    Scientific Name: Rhizoctonia sp.

    root rot

    Photo(s): Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org

    Situation: Lavender from greenhouse

    County: Utah

    Fact Sheets: None


    Apple Scab (Venturiaceae)

    Scientific Name: Ventuia inaequalis.

    apple scab

    Photo(s): Ryan Davis USU

    Situation: Apple tree

    County: Utah

    Fact Sheets: None

    *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.