Shortleaf pine : its economic importance and forest management . cases, and the removalof the trees is largely a matter of individual judgment. In general,thinnings should be made primarily for the better development ofthe dominant and codominant classes. This is accomplished throughthe removal of the more crowded intermediate and suppressed treeson the lower side and the exceptionally large, overshading or wolf trees on the upper side. In the crowded groups it is often necessaryto remove as many as one-half, or occasionally two-thirds, of theintermediate trees, together with a few trees of th
Shortleaf pine : its economic importance and forest management . cases, and the removalof the trees is largely a matter of individual judgment. In general,thinnings should be made primarily for the better development ofthe dominant and codominant classes. This is accomplished throughthe removal of the more crowded intermediate and suppressed treeson the lower side and the exceptionally large, overshading or wolf trees on the upper side. In the crowded groups it is often necessaryto remove as many as one-half, or occasionally two-thirds, of theintermediate trees, together with a few trees of the codominant 3 represents an overstocked 30-year-old shortleaf stand andseveral subsequent thinnings. In ordinary early thinnings the num-ber of trees removed is about one-third of the total stand. The sup-pressed trees are making exceedingly small growth and exert no ap-preciable influence upon the stand. Their removal, however, isbeneficial in decreasing the fire menace. Large openings should al- 38 BULLETIN 308, U. S. DEPARTMENT OF Fig. 3a.—Profile of trees in the original unthinned stand ; 15 trees living.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1915
