. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture. SHADE TREES. 215 more injurious than a loose-textured soil would have been. In this case the death of the trees was caused l^y too close contact of the soil with the bark. \Mieii a stone wall is first built around the tree at sufficient distance to allow for future growth, to keep the soil away from the trunk, trees filled in to a height of 5 or 6 feet have been known to sur^'ive for many years. Some trees are undoubt- edly more easily injured Jjy earth fillings than others, but building a wall around them to keep the dir
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture. SHADE TREES. 215 more injurious than a loose-textured soil would have been. In this case the death of the trees was caused l^y too close contact of the soil with the bark. \Mieii a stone wall is first built around the tree at sufficient distance to allow for future growth, to keep the soil away from the trunk, trees filled in to a height of 5 or 6 feet have been known to sur^'ive for many years. Some trees are undoubt- edly more easily injured Jjy earth fillings than others, but building a wall around them to keep the dirt from the trunk, or even the use of cobble stones, brick or coarse gravel close to the trunk, tends to prevent in- jury. Banking soil for even a few inches around young trees sometimes causes injur}'. There are many instances where trees which have been buried partly up the trunk threw out a new root system nearer the surface of the soil. The tree shown in Fig. 87 had been filled in with soil to a depth of 4 feet thirty-five years ago, and in removing the tree it was found that the old stump and roots were all decayed, but the new surface roots had l)roved sufficient to support the Fi«;. 8S.—Red maple injured by earth lillinj foot Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Massachusetts Agricultural Experiment Station. Amherst, : Massachusetts Agricultural Experiment Station, 1907-1974
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