WSU Potato Alerts

Tuesday Apr 07, 2026

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 ...

Managing Potato Psyllids with Insecticides

Tuesday Jun 16, 2026

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

Tuesday Jun 09, 2026

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 ...

Herbicide Carryover in Potato Seed

Thursday May 21, 2026

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...

Understanding Pest Contour Maps

Friday May 01, 2026

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...