Dennis A. Johnson

• Potato health management
• Wrestling drill book
• Alfalfa downy mildew
• Asparagus integrated pest management
• Botrytis bunch rot of grape
• Botrytis neck rot of onion
• Crown gall of grapes
• Downy mildew of onion
• Eutypa dieback of grapevine in Washington
• Field guide to sweet cherry diseases of Washington
• Fungicide application for management of potato late blight
• Fusarium root rot of beans