Washington Tree Fruit Research Commission

Wenatchee, Washington

This FREE illustrated guide is designed to help producers and packers distinguish between several commonly misidentified disorders including lenticel breakdown, blotch pit, heat injury, blister spot, and calcium burn.

It was developed cooperatively by Drs. Eric Curry (USDA-ARS, Wenatchee), Larry Schrader (WSU-TFREC, Wenatchee), Elmi Loetze (Stellenbosh, South Africa), and Ines Hanrahan (WTFRC, Yakima).

PDF Click here to download your copy.

Laminated placards are available upon request from Dr. Hanrahan at This email address is being protected from spambots. You need JavaScript enabled to view it. or (509) 669-0267.