Summary
Holes were drilled almost through 15 trunks each of Acer rubrum, A. saccharum, and Betula papyrifera. Dissections after 2 and 3 years showed that the uninjured cambium distal to the ends of the drill holes formed barrier zones and wider growth rings, indicating that some message must have been sent from injured wood through healthy wood to the cambium.
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We thank Dr. Joanna Tippett for assistance during the study, and for criticism of this paper
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Shigo, A.L., Dudzik, K.R. Response of uninjured cambium to xylem injury. Wood Sci. Technol. 19, 195–200 (1985). https://doi.org/10.1007/BF00392048
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DOI: https://doi.org/10.1007/BF00392048