| http://www.w3.org/ns/prov#value | - Common recommendations for amendments to Colorado soil include organic material such as compost or well-rotted manure to improve drainage, soil structure and nutrient content as well as nitrogen fertilizer (10-0-0) at a rate of 2 lbs. per 1,000 square feet, and powdered limestone to raise the pH of soil or sulfur to lower the pH.
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