Dennis Johnson, Ph.D.
Dennis Johnson, Ph.D.
Plant Pathologist
Washington State University
Plant Pathology
PO Box 646430
Pullman,
WA
USA
99164-6430
Email:
dajohn@cahnrs.wsu.edu
Papers:
Influence of pH, Sulfur, Chloride, and Potassium On Infection Severity of Verticillium dahliae In Russet Burbank Potato Roots