Tree Fruit Research & Extension Center 

Horticultural Resources


Four WSU faculty lead horticultural research at the Tree Fruit Research & Extension Center in Wenatchee. Other WSU tree fruit staff and faculty conduct activities in Pullman, Prosser, and Mt. Vernon.

Selected Features

Stress Induced Disorders

Apples can be damaged either pre-harvest or post-harvest by certain stresses. In some instances, preharvest stress conditions predispose the apple to develop symptoms of a disorder only after picking or storage. Thus, it is important for both growers and packers to be aware of these potential problems. more (pdf)...

Evapotranspiration Calculator

The use of water by plants can be estimated by calculating what is known as potential evapotranspiration (pET). This is the possible loss of water through evaporation and transpiration. Transpiration is the movement of water through a plant from the soil into the roots, up the stem, and out through the leaves. Simple calculations of pET can be based on sun, wind, temperature, and humidity. Go to calculator...

Master Gardeners' Soil & Fertlizer Presentation

"Soils are complex mixtures of minerals, organic compounds, and living organisms that interact continuously in response to natural and imposed biological, chemical, and physical forces." Outline of a Master Gardener Seminar. Go to outline...

Opportunities to study Horticulture at WSU

The WSU Horticulture program was recently ranked number 8 in the nation, with the Plant Sciences program ranked number 2 by a survey in The Chronicle of Higher Education more...

Tree Fruit Research & Extension Center, 1100 N Western Ave, Washington State University, Wenatchee WA 98801, 509-663-8181, Contact Us