. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 32 BULLETIN 615. U. S. DEPARTMENT OF AGRICULTURE. systems ran usually be effectively broken up by the construction of terraces laid out approximately at right angles to the gullies but so placed as to allow water to be carried through their channels. If reinforced-by small rock fills built into the washes at sufficiently frequent intervals to check the run-oil' before the cumulative effect of the water's force becomes uncontrollable, the terraces appear to be Fig. 7.—Tree and shrub planting to check erosion
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 32 BULLETIN 615. U. S. DEPARTMENT OF AGRICULTURE. systems ran usually be effectively broken up by the construction of terraces laid out approximately at right angles to the gullies but so placed as to allow water to be carried through their channels. If reinforced-by small rock fills built into the washes at sufficiently frequent intervals to check the run-oil' before the cumulative effect of the water's force becomes uncontrollable, the terraces appear to be Fig. 7.—Tree and shrub planting to check erosion. The place of successful attack of an evil like the one in question is at the origin of its source. In order thoroughly to test the value of terraces located near the heads of the gullies and planted to soil- binding species, a badly gullied area was selected on a southwest slope at an elevation of approximately feet. This study is Hill in an experimental stage. As shown in figure 7, the distances between the terraces which were established vary considerably, being determined by the number of gullies and other topographic features. In establishing a terrace, strips are plowed about 4 feet wide, or even wider on the steeper slopes, following which the loosened soil. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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