WSU Potato Alerts

Monday Apr 07, 2025

The WSU Potato Alerts e-newsletter covers topics important to potato production in the irrigated Columbia Basin. The alerts are issued weekly during the potato growing season, with additional issues s...

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...