Utah Plant Pest Diagnostic Lab

Diseases Diagnosed in June 2012

Aspen Canker

Scientific Name: Cytospora

aspen canker

Photo(s): Montana State University Extension Service

Situation: Aspen Tree

County: Wasastch

Fact Sheets: U.S. Dept. of Agriculture Forest Service; Utah State University


Bacterial Speck

Scientific Name: Pseudomonas sp.

bacterial speck

bacterial speck

Photo(s): Bacterial speck in a tomato plant taken by Claudia Nischwitz, Utah State University.

Situation: Tomato

County: Davis

Fact Sheets: Cornell University; University of California, Davis


Cherry Necrotic Rusty Mottle Virus

Scientific Name: Pathogen Unknown

Photo(s): Image from the web. These images are from Google images, and have not been verified by UPPL.

Situation: Bing Cherry

County: Utah

Fact Sheets: University of California Davis


Coryneum Blight Shothole

Scientific Name: Wilsonmyces carpophilus

cornyneum blight

cornyneum blight

Photo(s): Coryneum Blight images from USU publications

Situation: Peach

County: Grand

Fact Sheets: Utah State University; Colorado State University


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


Pythium

Scientific Name: Pythium sp.

pythium

Photo(s): Pythium on Impatiens by Pamela Robert, University of Florida.

Situation: Impatiens

County: Wasatch

Fact Sheets: Penn State University


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


Tomato Spotted Leaf Virus

Scientific Name: Varies - transported by thrips

tomato spotted leaf virus

tomato spotted leaf virus

tomato spotted leaf virus

tomato spotted leaf virus

tomato spotted leaf virus

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


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


Western Gall Rust

Scientific Name: Endocronartium (Peridermium) harknessii

western gall rust

Photo(s): Western Gall Rust taken by Joseph O'Brien, USDA Forest Service

Situation: Austrian Pine

County: Davis

Fact Sheets: USDA


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:


Abiotic, unknown and/or non-disease stressors in May.

  1. Chlorosis (Raspberry - Utah)

    chlorosis

    Photo/s: Comparison of healthy (left) and chlorotic (right) raspberry leaves. Note the green veins on the chlorotic leaf from USU publication.

    Situation: Raspberry

    County: Utah

    Fact Sheets: Utah State University

  2. Abiotic (Alfalfa - Box Elder)
  3. Abiotic (Cucumber - Davis)
  4. Drought Stress (Turf - Cache)
  5. Frost Damage (Corn - Cache)
  6. Magnesium Deficiency (Tomato - Grand)
  7. Unknown (Bur Oak - Emery)
  8. Wind Damage (Apple - Wasatch)
*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.