WSU Potato Alerts

Monday Apr 07, 2025

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

Herbicide Carryover in Potato Seed

Wednesday May 21, 2025

Some herbicides can accumulate in daughter tubers if they drift onto or are accidentally applied to potato foliage. This can result in problems the following season when the tubers are used as seed. H...

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...