Notes: Techniques for Distinguishing the Sapwood-Heartwood Boundary in Living Loblolly Pine (Pinus taeda L.)

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Of 20 solutions tested, diazotized benzidine dihydrochloride, 2-methoxyaniline, and fast blue effectively distinguished the sapwood-heartwood boundary in 27-year-old loblolly pine trees. Sapwood-heartwood boundaries identified by UV scanning corresponded to the results indicated by these 3 chemicals. Sapwood thickness was not constant, but was linearly correlated (r = 0.964) with dbh. Forest Sci. 30:756-760.

Keywords: Biological stains; UV scanning; tree vigor

Document Type: Miscellaneous

Affiliations: Department of Forestry, Mississippi Agricultural and Forestry Experiment Station, Mississippi State, MS 39762

Publication date: September 1, 1984

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