Back to Focus on Potato

Potassium and Chloride in Potatoes

By Dr. Don Horneck
Associate Professor
and Extension Agronomist
Oregon State University
2121 S 1st Street
P. O. Box 105
Hermiston, OR 97838
Phone: 541-567-8312

Watch Presentation (32 min 37 sec)

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This presentation will help consultants, growers, and other practitioners in the most potato growing regions make a decision on when a chloride or sulfate based fertilizer is appropriate for fertilization. This presentation will discuss both the role of potassium and chloride in potatoes. The misconception that potatoes are “chlorophobes” will be addressed as well as the benefits of potassium fertilization. Historical and recent research will demonstrate potassium effects on petioles and specific gravity.

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