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Petiole Analysis as a Diagnostic Tool
for Improving Potato Nutrition

July 2013

By Carl Rosen, Ph.D.
University of Minnesota
Phone: 612-625-8114

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Summary: This presentation will help consultants, county agents, growers, and other practitioners in potato-producing states to understand how petiole analysis can be used as a diagnostic tool to help improve nutrition of the potato crop. Specifically in this presentation, practitioners will learn: the principles behind using tissue nutrient analysis for crop production, the proper procedures for taking a petiole sample, how to interpret the results following analysis, and use of petiole nitrate analysis as a guide for in-season nitrogen fertilizer application. By the end of this presentation, the practitioner should know more about appropriate use of petiole analysis for potato production.

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