The Short-Term effect of Simulated Acidic Rainfall on the Formation of Discolored Wood in Acer Rubrum    (View PDF)

L Tower, A. Shigo, and E. Brennan

Abstract: Healthy red maple trees growing in the Massabesic Experimental Forest in Main were wounded in June 1982, with a bow saw. Dilute sulfuric acid solutions of pH 3.0, 4.0, and 5.8 were dripped into the wounds for 1 hr once a week for 7 weeks. In mid-August the trees were harvested, sectioned, and the amount of discolored wood associated with each wound was measured with a planimeter. Increased acidity did not affect the amount of discoloration that occurred.

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https://doi.org/10.48044/jauf.1985.045