Diagnosing Plant Problems

An introduction to the skills and concepts of field and laboratory diagnosis that utilizes regionally specific examples. Upon completion of the module, learners will have achieved the following learning objectives:

  • Recognize signs and symptoms of common plant pathogen and insect damage.
  • Know the difference between abiotic and biotic plant damage.
  • Understand the relationship between plant pathogens, pests, and diseases.


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Pest highlight:

Asian longhorned beetle



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Content Revision (scripted presentation only): October 2009

Technical Review and Module Revision: Gail Ruhl (Purdue University)

Original Publication: April 2008

Module Design/Technical Writer: Gerry Snyder with assistance from Buck Rowland (both Kansas State University)

Content Experts: Gerald Holmes (North Carolina State University), Judy O'Mara (Kansas State University), Amanda Hodges (University of Florida)

Technical Reviewers: Gail Ruhl (Purdue University), Richard Hoenisch (University of California-Davis)

Additional Reviewers: Mark Blevins (North Carolina State University), Kasia Kinzer (North Dakota State University), Nina Zidack (Montana State University)


Photo credit - Asian longhorned beetle: Joe Boggs, Ohio State University