Utah Plant Pest Diagnostic Lab

Diseases Diagnosed in March 2013

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


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


Abiotic, unknown and/or non-disease in Turf -It can be difficult to diagnose disease by symptoms alone early in the season. The fungus is more easily seen after June. If no pathogens are detected, the diagnosis and recommendation will be based on symptom appearance and timing, host affected, and observations of disease trends for the area.

Other Abiotic, unknown and/or non-disease diagnosed in March

Austrian Pine

Non-Disease Stressor: unknown abiotic

Situation: Austrian Pine

County: Iron

*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.