Soils -- Colorado -- Nitrogen content
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Bacteriological studies of the fixation of nitrogen in certain Colorado soils (Agricultural Experiment Station of the Agricultural College of Colorado, 1911), by Walter G. Sackett (page images at HathiTrust)- The fixation of nitrogen in some Colorado soils (Agricultural Experiment Station of the Agricultural College of Colorado, 1910), by William Parker Headden (page images at HathiTrust)
- The fixation of nitrogen in some Colorado soils : a further study (Agricultural Experiment Station of the Agricultural College of Colorado, 1910), by William Parker Headden (page images at HathiTrust)
- Fixation of nitrogen in Colorado soils : occurrence of nitrates on rocks (Agricultural Experiment Station of the Agricultural College of Colorado, 1922), by William Parker Headden (page images at HathiTrust)
- The nitrate question in Colorado : a review for the farmer (Colorado Experiment Station, 1925), by William Parker Headden (page images at HathiTrust)
Items below (if any) are from related and broader terms.
Filed under: Soils -- Nitrogen content -- Colorado- The fixation of nitrogen in Colorado soils : the distribution of the nitrates and their relation to the alkalis (Agricultural Experiment Station of the Agricultural College of Colorado, 1913), by William Parker Headden (page images at HathiTrust)
- Land classification of western Colorado ([Washington], 1933), by Geological Survey (U.S.) and Luster R. Brooks (page images at HathiTrust)
- Computer estimates of natural recharge from soil moisture data, high plains of Colorado : completion report, OWRT project no. A-016 COLO (Environmental Resources Center, Colorado State University, 1975), by R. A. Longenbaugh, N. Krishnamurthi, and United States. Office of Water Research and Technology (page images at HathiTrust)
- Soils and alkali : fertility, irrigation, etc. (State Agricultural College, Agricultural Experiment Station, 1889), by David O'Brine (page images at HathiTrust)
- A peculiar soil condition in the San Luis Valley (Colorado Experiment Station, 1923), by William Parker Headden (page images at HathiTrust)
- A soil study. Part III, The soil (Agricultural Experiment Station of the Agricultural College of Colorado, 1901), by William Parker Headden (page images at HathiTrust)
- Land types in eastern Colorado (Colorado Agricultural Experiment Station, Colorado State College, 1944), by L. A. Brown (page images at HathiTrust; US access only)
- Soil survey of the Fort Collins area, Colorado. ([U.S. Govt. Print. Off., 1931), by A. T. Sweet and John N. Spencer (page images at HathiTrust)
- Soil survey laboratory data and descriptions for some soils of Colorado (Soil Conservation Service, U.S. Dept. of Agriculture in cooperation with Colorado Agricultural Experiment Station, 1967), by Colorado Agricultural Experiment Station and United States. Soil Conservation Service (page images at HathiTrust)
- Soil survey of Adams County, Colorado (U.S. Dept. of Agriculture, Soil Conservation Service : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1974), by Thomas G. Baber, John J. Sampson, and Colorado Agricultural Experiment Station (page images at HathiTrust)
- Soil survey of Alamosa area, Colorado (For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1973), by United States. Soil Conservation Service, James P. Pannell, and Colorado Agricultural Experiment Station (page images at HathiTrust)
- Soil survey, Arapahoe County, Colorado (U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1971), by Joseph B. Brown, Lynn Seymour Larsen, Colorado Agricultural Experiment Station, and United States. Soil Conservation Service (page images at HathiTrust)
- Soil survey of the Longmont area, Colorado (U.S. Department of Agriculture ;, 1935), by C. H. Dodson, A. T. Sweet, Colorado Agricultural Experiment Station, and United States. Bureau of Chemistry and Soils (page images at HathiTrust)
- Soil survey of the Greeley area, Colorado (U.S. Dept. of Agriculture ;, 1932), by W. E. Haines, L. A. Brown, A. T. Sweet, Colorado Agricultural Experiment Station, and United States. Bureau of Chemistry and Soils (page images at HathiTrust)
- Contrasts of vegetation, soils, microclimates, and geomorphic processes between north- and south-facing slopes on Green Mountain near Denver, Colorado (Dept. of the Interior, U.S. Geological Survey :, 1990), by Farrel Allen Branson, L. M. Shown, and Geological Survey (U.S.) (page images at HathiTrust)
- Soil survey of the Longmont area, Colorado (U.S. Department of Agriculture ;, 1935), by C. H. Dodson, A. T. Sweet, Colorado Agricultural Experiment Station, and United States. Bureau of Chemistry and Soils (page images at HathiTrust)
- Soil survey of Paonia area, Colorado : parts of Delta, Gunnison, and Montrose Counties. (U.S. Dept. of Agriculture, Soil Conservation Service, 1981), by William R. Hunter, Colorado Agricultural Experiment Station, and United States. Soil Conservation Service (page images at HathiTrust)
- Soil survey, Phillips County, Colorado (For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1971), by John I. Brubacher, United States. Soil Conservation Service, and Colorado Agricultural Experiment Station (page images at HathiTrust)
- Soil survey of Piedra area, Colorado, parts of Archuleta, Hinsdale, La Plata, Mineral, and Rio Grande counties. (U.S. Dept. of Agriculture, Soil Conservation Service, 1981), by Ronald F. Bauer, Colorado Agricultural Experiment Station, United States Forest Service, and United States. Soil Conservation Service (page images at HathiTrust)
- Soil survey of Pike National Forest, Eastern Part, Colorado, parts of Douglas, El Paso, Jefferson, and Teller counties (Forest Service :, 1992), by Randy Moore, Colorado Agricultural Experiment Station, United States. Soil Conservation Service, and United States Forest Service (page images at HathiTrust)
- Soil survey of Pueblo area, Colorado : parts of Pueblo and Custer Counties (The Service, 1979), by United States. Soil Conservation Service, Roy J. Larsen, and Colorado Agricultural Experiment Station (page images at HathiTrust)
- Soil survey of the Greeley area, Colorado (U.S. Dept. of Agriculture ;, 1932), by W. E. Haines, L. A. Brown, A. T. Sweet, Colorado Agricultural Experiment Station, and United States. Bureau of Chemistry and Soils (page images at HathiTrust)
- Soil survey of the Longmont area, Colorado (U.S. Department of Agriculture ;, 1935), by C. H. Dodson, A. T. Sweet, Colorado Agricultural Experiment Station, and United States. Bureau of Chemistry and Soils (page images at HathiTrust)
- Comparison of methods for estimating available phosphorus in alkaline calcareous soils (Colorado Agricultural College, Colorado Experiment Station, 1933), by R. D. Hockensmith, James B. Goodwin, and Robert Alexander Gardner (page images at HathiTrust; US access only)
- Refractory-clay deposits of Colorado (U.S. Dept. of the Interior, Bureau of Mines, 1959), by Joel N. Van Sant (page images at HathiTrust)
- The Effect of green manures and crop residues on soil reaction (Colorado Experiment Station, 1928), by Walter G. Sackett (page images at HathiTrust)
- Colorado's soil and water : conditions and trends. (U.S. Dept. of Agriculture, Soil Conservation Service, 1985), by United States. Soil Conservation Service (page images at HathiTrust)
- Gully development and control : the status of our knowledge (Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1976), by Burchard H. Heede, United States Forest Service, and Colo.) Rocky Mountain Forest and Range Experiment Station (Fort Collins (page images at HathiTrust)
- Innovative farming : the key to your future (U.S. Dept. of Agriculture, Soil Conservation Service, 1983), by Charles A. Holcomb (page images at HathiTrust)
- Submerged burlap strips aided rehabilitation of disturbed semiarid sites in Colorado and New Mexico (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1975), by Burchard H. Heede and Colo.) Rocky Mountain Forest and Range Experiment Station (Fort Collins (page images at HathiTrust)
- Conservation tillage : --managing residues for conservation compliance. (U.S. Dept. of Agriculture, Soil Conservation Service, 1990), by United States. Soil Conservation Service (page images at HathiTrust)
- Conversion of gullies to vegetation-lined waterways on mountain slopes (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1968), by Burchard H. Heede and Colo.) Rocky Mountain Forest and Range Experiment Station (Fort Collins (page images at HathiTrust)
- Conservation in Colorado : protecting soil and water resources in the 1990's. (U.S. Dept. of Agriculture, Soil Conservation Service, 1991), by United States. Soil Conservation Service (page images at HathiTrust)
- Conserving Colorado's resources. (U.S. Dept. of Agriculture, Soil Conservation Service, 1989), by United States. Soil Conservation Service (page images at HathiTrust)
- Effects of land-use conversion on water runoff and soil erosion. (U.S. Dept. of Agriculture, Agricultural Research Service ;, 1984), by Rome H. Mickelson and United States. Agricultural Research Service (page images at HathiTrust)
- Application of geomorphic principles to environmental management in semiarid regions (Colorado Water Resources Research Institute, Colorado State University, 1980), by Stanley Alfred Schumm, Z. B. Begin, and M. T. Bradley (page images at HathiTrust)
- Soil factors influencing crop production in the Arkansas Valley, Colorado (U.S. Dept. of Agriculture, 1928), by A. T. Sweet (page images at HathiTrust)
- A basis for rating the productivity of soils on the plains of eastern Colorado (Colorado State College, Colorado Experiment Station, 1938), by L. A. Brown (page images at HathiTrust; US access only)
- A comparison of rock and soil samples for geochemical mapping of two porphyry-metal systems in Colorado (United States Department of the Interior, Geological Survey, 1978), by Geological Survey (U.S.) and George J. Neuerburg (page images at HathiTrust)
- Pumping tests in Colorado (United States Geological Survey, 1965), by Woodrow W. Wilson (page images at HathiTrust)
- A peculiar soil condition in the San Luis Valley (Colorado Experiment Station, 1923), by William Parker Headden (page images at HathiTrust)
- Effects of soil type and watering on germination, survival, and growth of Engelmann spruce : a greenhouse study (Forest Service, U.S. Dept. of Agriculture, Rocky Mountain Forest and Range Experiment Station, 1972), by Daniel L. Noble (page images at HathiTrust)
- Comparison of methods for estimating available phosphorus in alkaline calcareous soils (Colorado Agricultural College, Colorado Experiment Station, 1933), by R. D. Hockensmith, James B. Goodwin, and Robert Alexander Gardner (page images at HathiTrust; US access only)
- Effects of fluvial tailings deposits on soils and surface- and ground-water quality, and implications for remediation--upper Arkansas River, Colorado, 1992-96 (U.S. Dept. of the Interior, U.S. Geological Survey, 2000), by Katherine Walton-Day, Geological Survey (U.S.), United States Bureau of Reclamation, and United States Environmental Protection Agency (page images at HathiTrust)
- Sugar beets (Agricultural Experiment Station of the Agricultural College of Colorado, 1900), by William P. Headden and Colorado Agricultural Experiment Station (page images at HathiTrust)
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