Christopher Adams

Pest management guide for tree fruits: Hood River, The Dalles, White Salmon, Rogue Valley, Umatilla County

This annual guide provides tree fruit growers with the latest information on pesticides and herbicides for fruit trees. People who grow apples, pears and cherries can learn application rates and recommendations for each stage of tree growth.

Ashley Thompson, Achala KC, Jay W. Pscheidt, Nik Wiman, Christopher Adams, Andony Melathopoulos, Niall Millar, Robert Orpet | Mar 2026 | OSU Extension Catalog Peer reviewed (Orange level)

Vegetarians, Predators and Parasitoids: Lesser-Known Wasps of Oregon

Wasps are more diverse and ecologically important than most people realize. Learn about the fascinating world of lesser-known wasps.

Tucker D. Hoffman, Scott R. Mitchell, Sandy DeBano, Christopher Adams, David Wooster | May 2024 | OSU Extension Catalog Peer reviewed (Orange level)

Western Boxelder Bug Feeding Damage in Pear

In pear fruit, injury from boxelder bug feeding looks nearly identical to damage caused by the invasive brown marmorated stink bug. Learn how to tell which bug caused feeding damage to your pears.

Eliott Gloeb, Christopher Adams, Maggie Freeman, Ashley Thompson | Dec 2023 | OSU Extension Catalog Peer reviewed (Orange level)

Suppressing Spotted-wing Drosophila Egg-laying with Micro-sprinkler Insecticide Application in Highbush Blueberry

Micro-sprinkler application of certain pesticides suppresses spotted-wing drosophila in highbush blueberries. However, those same pesticides applied by backpack sprayers provide better control.

Serhan Mermer, Gabriella Tait, Ferdinand Pfab, Edwin T. Harris, Linda Brewer, Christopher Adams, Vaughn Walton | Dec 2022 | OSU Extension Catalog Peer reviewed (Orange level)

Identifying Serious Virus and Phytoplasma Symptoms in Your Cherry Orchard

Identifying Serious Virus and Phytoplasma Symptoms in Your Cherry Orchard

Ashley Thompson, Christopher Adams, Jay W. Pscheidt | Oct 2022 | OSU Extension Catalog Peer reviewed (Orange level)

Spotted-wing Drosophila, Relative Rankings and Seasonal Strategies for Insecticide Use

Researchers around the country have ranked the effectiveness of the most-used pesticides to control spotted-wing drosophila populations in the field. These recommendations are focused on controlling immature and adult life stages of SWD.

Serhan Mermer, Philip Fanning, Gabriella Tait, Ferdinand Pfab, Christopher Adams, Linda Brewer, Vaughn Walton | Aug 2022 | OSU Extension Catalog Peer reviewed (Orange level)

Getting ahead of X-disease

X-disease has become a cyclic problem on the West Coast as outbreaks of X-disease emerge every 20 years or so. Understanding X-disease and identifying and removing infected trees will help break this cycle.

Ashley Thompson, Christopher Adams, Lauri Reinhold, Jay W. Pscheidt | Aug 2022 | OSU Extension Catalog Peer reviewed (Orange level)