Acidifying Soil for Crop Production West of the Cascade Mountains (Western Oregon and Washington)

Donald A. Horneck, John M. Hart, Robert G. Stevens, Steven Petrie and James Altland
EM 8857 | Published February 2004, Reviewed 2021

Summary

Explains the relationship between high soil pH and nutrient deficiencies in blueberries, rhododendrons, azaleas, and other ornamental crops. Color photos illustrate symptoms of pH-induced nutrient deficiency. Presents step-by-step instructions for lowering soil pH, either before a crop is planted or after establishment.

About the authors

Donald A. Horneck
Extension agronomist
Oregon State University
John M. Hart
Extension soil scientist
Oregon State University
Robert G. Stevens
Extension soil scientist
Washington State University
Steven Petrie
Superintendent
Columbia Basin Agricultural Research Center
James Altland
Extension faculty (nursery crops)
North Willamette Research and Extension Center

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