Utah Plant Pest Diagnostic Lab

Diseases Diagnosed in May 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

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: None

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:

Raspberry Bush Dwarf Virus

Pathogen: No Latin name. Seed and pollen spread virus.

raspberry bush dwar virus

Photo(s): Image courtesy of Dr. Claudia Nischwitz, USU extension

Situation: Juneberry & Raspberry

County: Utah

Fact Sheets: Utah State University

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

  1. Water Stress
  2. Nutrient deficiency
  3. Winter Stress
  4. Numerous samples were undetermined due to the cold weather. Clients were advised to contact the lab once it warmed up if the symptoms were still visible.
*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.