. Research for tomorrow's forests : 1983 research accomplishments. --. Forests and forestry Research United States. Revegetating Bentonite Mine Spoils: A New Lead Bentonite mine spoils in the northern Great Plains are difficult to revegetate and reclaim. Although the spoils are not deficient in nutrients, their physical and chemical properties are poor. Plant succession is slow on them for other reasons too: topsoil is scarce, rainfall is low, and there is livestock grazing. Steep spoils mined 30 years ago remain barren and eroded. Reclamation efforts Icontouring, top soil spreading, seeding)
. Research for tomorrow's forests : 1983 research accomplishments. --. Forests and forestry Research United States. Revegetating Bentonite Mine Spoils: A New Lead Bentonite mine spoils in the northern Great Plains are difficult to revegetate and reclaim. Although the spoils are not deficient in nutrients, their physical and chemical properties are poor. Plant succession is slow on them for other reasons too: topsoil is scarce, rainfall is low, and there is livestock grazing. Steep spoils mined 30 years ago remain barren and eroded. Reclamation efforts Icontouring, top soil spreading, seeding) by researchers in the Rocky Mountain Station have shown promise of overcoming low pH, soil salinity, high sodium and sulfur concentrations, and soil compaction, but none of the plants that were inten- tionally seeded by scientists on the re- claimed spoils survived better or was more productive than rillscale, a native broadleaved herb that seeded in on its own. The success of rillscale, regardless of the age of the spoil or reclamation treatment, shows that revegetation is possible in this harsh environment. However, more than 75 years may be required to restore these disturbed sites to productive sageDrush grasslands once. again. Native plant rillscale is the most successful colonizer on the bentonite mine spoils. 3. 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. Forest Service. [Washington, D. C. ?] : USDA, Forest Service
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