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Improvement Cutting     The removal of trees of undesirable species, form or condition from the main canopy of the stand, to improve health, composition and value of the stand.     Back to top       Intensive Siliviculture     Refers to the treatments carried out to maintain or increase the yield and value of forest stands. Includes treatments such as site rehabilitation, conifer release, spacing, pruning, and fertilization. Also, known as incremental silviculture. Compare with basic silviculture.     Back to top       International Log Rule     In use since about 1906. Generally regarded as the most accurate of the three scaling methods, International log rule deducts only 2.12 inches for slabs and 1/4 inch for kerf. (Also see Scribner and Doyle Rules.) It is the standard rule used in Massachusetts.     Back to top       For Further Information Please contact our knowledgable staff