Additional Pest & Disease Management Information

Thursday May 01, 2025

The following links will take you to some of the best online resources for potato pest and disease management. IPM GUIDES and OTHER INFORMATION: Potato Decision Aid System: Welcome to our new and im...

Understanding Pest Contour Maps

Thursday May 01, 2025

Contour maps showing results from the WSU Extension insect monitoring network are available on the Potato Decision Aid System (DAS). These maps use color to help you visualize where and how many insec...

Psyllid Yellows and Scouting for Nymphs

Tuesday Jul 30, 2024

PSYLLID YELLOWS is a disorder that can occur when potato psyllid nymphs feed on potato plants. The nymphs inject a toxin into the plant when they feed. This results in a range of growth disorders that...

Managing Potato Psyllids with Insecticides

Sunday Jun 16, 2024

Potato psyllids are important pests because they can spread the bacterium that causes zebra chip disease. They cannot be stopped from migrating into potato fields. However, they can be controlled once...

Potato Virus Y

Sunday Jun 09, 2024

POTATO VIRUS Y (PVY) is the reason for most potato seed lot downgrades by seed certification agencies. This disease has become increasingly difficult for seed growers to deal with due (mostly) to the ...