Diseases Diagnosed in November 2010

 Plant diseases diagnosed by the Utah Plant Pest Diagnostic Lab in November, 2010.

 
1) Summer Patch                                                                           2) Anthracnose
3) Ascochyta Leaf Blight                                                                3) Rust on Turfgrass
4) Rust on Globemallow                                                               4) Spruce Needle Drop
 

 



Summer Patch: Turfgrass

 

Common Name:  Summer Patch

Scientific Name: Magnaporthe sp.

Situation: Turf

County: Utah

Fact Sheet Utah State Univ.
Fact Sheet Purdue Univ.

Images Forestry Images

Photo: Mary Ann Hansen, Virginia Polytechnic Institute and State Univ., Bugwood 

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Anthracnose: Turfgrass

 

Common Name: Anthrocnose

Scientific Name: Colletotrichum graminicola

Situation: Turf

County: Cache

Fact Sheet Univ. CA Davis

Images Forestry Images

Photo: Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org

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Ascochyta Leaf Blight: Turfgrass

 

Common Name: Ascochyta Leaf Blight

Scientific Name: Ascochyta sp. 

Situation: Turf

County: Cache

Fact Sheet Colorado State Univ.

Photo: Ned Tisserat, Colorado State University, Bugwood.org

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Common Name: Rust

Scientific Name: many 

Situation: Turf/field

County: Utah

Fact Sheet Purdue Univ.

Photo: Ryan S. Davis, Utah State University

Photo: Ryan S. Davis, Utah State University

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Rust: Globemallow 

Common Name: Rust

Scientific Name: many 

Situation: Turf/field

County: Utah

Fact Sheet Univ. Massachusetts 

Photos: (Digital photos) Ryan Davis, Utah State University
(SEM) Claudia Nischwitz, Utah State University

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Spruce Needle Dieback: Cause Unknown

Common Name: Blue Spruce: Disease Unknown

Scientific Name: na 

Situation: Many Blue Spruce Trees Throughout Utah

County: Many

Photos:  Ryan Davis, Utah State University
 


  

 *Links in the table 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