By Kevin T. Smith, Ph.D, and Jessie A. Glaeser, Ph.D.  This article was first published in Tree Care Industry, June 2017.  It was shared by Kevin T. Smith for the fall 2018 MMA newsletter.  Here are some photos from the article.  To check out the original, click here.

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Image 10-22-18 at 10.47 PM

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