Utah Plant Pest Diagnostic Lab

Diseases Diagnosed in April 2011

Black Scurf

Scientific Name: Rhizoctonia solani

black scurf

black scurf

Photo(s): Sugar beet dug up and sliced open to show the damage of black scurf, Howard F. Schwartz, Colorado State University, Bugwood.org.

Situation: On potato

County: Salt Lake County

Fact Sheets: Michigan State University; Texas A&M


Nutrient Deficiency

Scientific Name: NA

nutrient deficiency

nutrient deficiency

Photo(s): Phosphorus deficiency; Nitrogen deficiency, R.J. Reynolds Tobacco Company Slide Set, R.J. Reynolds Tobacco Company, Bugwood.org.

Situation: On plant

County: Salt Lake County

Fact Sheets: University of Arizona

*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.