Utah Plant Pest Diagnostic Lab

Diseases Diagnosed in February 2011

Winter Water Stress

Scientific Name: Abiotic

winter water stress

Photo(s): Winter water stress on evergreens, Michael Kuhns, Utah State University.

Situation: Abiotic effect caused by temperature swings in the winter.

County: Salt Lake County

Fact Sheets: University of Minnesota


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


Pythium Root Rot

Scientific Name: Pythium sp.

pythium root rot

Photo(s): Pythium root rot, David B. Langston, University of Georgia, Bugwood.org

Situation: On plants

County: Utah County

Fact Sheets: UC IPM; New Mexico State Univ.

*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.