Utah Plant Pest Diagnostic Lab

Diseases Diagnosed in August 2013

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


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


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


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


Curly Top

Scientific Name: Germinirirus sp.

curly top

Photo(s): A.C. Magyarosy, Bugwood.org

Situation: Cream Sausage Tomato

County: Salt Lake

Fact Sheets: None


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


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

*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.