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Soil fertility -- Colorado

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• Soil fertility
• Soils -- Colorado
• Soil fertility -- United States
• Colorado

• Soil fertility -- Colorado -- Black Mesa

• 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)

• Pot tests indicate fertilizers can improve soils from Black Mesa in Western Colorado (Forest Service, U.S. Dept. of Agriculture, Rocky Mountain Forest and Range Experiment Station, 1969), by W. M. Johnson (page images at HathiTrust)

Items below (if any) are from related and broader terms.

• Sustainable Soil Management, by Preston Sullivan (illustrated HTML at attra.org)
• An Agricultural Testament (1943 edition), by Albert Howard (text in Australia; NO US ACCESS)
• Man and his earth (Iowa State University Press, 1962), by George D. Scarseth and John Huseby (page images at HathiTrust)
• Soil fertility and permanent agriculture (Ginn, 1910), by Cyril G. Hopkins (page images at HathiTrust)
• Improving your garden through soil management. (Crown Publishers, 1955), by Earl F. Downey (page images at HathiTrust)
• Der Einfluss, der Pflanzendecke und Beschattung auf die physikalischen Eigenschaften und die Fruchtbarkeit des Bodens. (Wiegandt, Hempel & Parey, 1877), by Ewald Wollny (page images at HathiTrust)
• Ueber den Zusammenhang zwischen Witterung, Boden und Düngung in ihrem Einflusse auf die Quantität und Qualität der Erndten. (C. Flemming, 1868), by Hubert Grouven (page images at HathiTrust)
• Red maple (Acer rubrum L.) growth and foliar nutrient responses to soil fertility level and water regime (Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station, 1978), by C. H. Pham, Gordon M. Heisler, Howard G. Halverson, United States Forest Service, and Pa.) Northeastern Forest Experiment Station (Radnor (page images at HathiTrust)
• Effects of soil and foliar applications of nitrogen fertilizers on a 20-year-old Douglas-fir stand (Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1979), by Richard E. Miller, Steven L. Wert, United States Forest Service, and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)
• Changes in soil fertility following prescribed burning on Coastal Plain pine sites. (U.S. Dept. of Agriculture, Southeastern Forest Experiment Station, Forest Service, 1982), by William H. McKee and N.C.) Southeastern Forest Experiment Station (Asheville (page images at HathiTrust)
• Soils and soil fertility prepared for the use by Winter School Classes at the Pennsylvania State College (Austin L. Patrick and Fred G. Merkle, 1924), by Austin L. Patrick and F. G. Merkle (page images at HathiTrust)
• Frank Mann's soil book. (Prairie Farmer, 1915), by Frank Irving Mann (page images at HathiTrust)
• A laboratory manual for soil fertility students. (Wm. C. Brown, 1958), by Darrell Arden Russel (page images at HathiTrust)
• The soil and its fertility (Reinhold Pub. Corp., 1960), by Henry Teuscher, Jerome P. Seaton, and Rudolph Adler (page images at HathiTrust)
• Microorganisms and soil fertility. (Oregon State College, 1959), by Walter Beno Bollen (page images at HathiTrust)
• A study of some of the properties of a non-productive soil. ([Ithaca, N. Y.], 1909), by John Houston Squires (page images at HathiTrust)
• A comparison of the relative toxicity of certain substances in soil and water cultures. (Ithaca, N. Y., 1914), by L. F. Gieseker (page images at HathiTrust)
• Fertility status, North Carolina's coastal plain soils. (Raleigh, 1961), by North Carolina. Department of Agriculture (page images at HathiTrust)
• Wildlife and the soil. (Jefferson City, 1952), by Missouri. Conservation Commission and Werner Otto Nagel (page images at HathiTrust; US access only)
• Grundlagen zur Beurteilung der Ackerkrume in Beziehung auf landwirtschaftliche Pflanzenproduktion. (Hinstorff, 1882), by Reinhold Heinrich (page images at HathiTrust)
• The essentials of soil fertility (The Stockman-farmer publishing company, 1913), by Alva Agee (page images at HathiTrust)
• First principles of soil fertility (O. Judd company; [etc., etc.], 1908), by Alfred Vivian (page images at HathiTrust)
• Question summary to accompany "Soil fertility and permanent agriculture," (Ginn and company, 1912), by Cyril G. Hopkins (page images at HathiTrust)
• Soil fertility : an address delivered before the Rich Neck Farmers' Club, of Queen Anne County, Maryland (U.S. Dept. of Agriculture, 1906), by Milton Whitney (page images at HathiTrust)
• Summer crops for green manure and soil improvement (U.S.D.A., 1947), by Roland McKee (page images at HathiTrust)
• Relation of soil conditions and orchard management to the rosette of pecan trees (U.S. Dept. of Agriculture, 1926), by J. J. Skinner and J. B. Demaree (page images at HathiTrust)
• Methods of soil analysis for soil-fertility investigations (U.S. Dept. of Agriculture, 1947), by Michael Peech (page images at HathiTrust)
• Soil fertility. (Wm. C. Brown, 1949), by Louis Milton Thompson (page images at HathiTrust; US access only)
• Design of agronomic experiments for plots differentiated in fertility by past treatments (Agricultural Experiment Station, Iowa State College of Agriculture and Mechanic Arts, 1937), by H. C. Forester (page images at HathiTrust; US access only)
• Sweet corn leaf composition and its relationship to soil fertility (Agricultural Experiment Station, College of Agriculture, University of Massachusetts, 1971), by Donald N. Maynard (page images at HathiTrust; US access only)
• Phosphorus and potassium fertilizers affect soil test levels (Michigan State University, Agricultural Experiment Station and Cooperative Extension Service, 1971), by R. P. White and E. C. Doll (page images at HathiTrust; US access only)
• The Ferden farm report, 1926-1970. Part I, Soil management; soil fertility (Michigan State University, Agricultural Experiment Station, 1976), by Lynn Shelby Robertson, Ray Lewis Cook, and J. F. Davis (page images at HathiTrust)
• Soil acidity as calcium (fertility) deficiency (University of Missouri, College of Agriculture, Agricultural Experiment Station, 1952), by William A. Albrecht and George E. Smith (page images at HathiTrust; US access only)
• Soil fertility and the quality of seeds (University of Missouri, College of Agriculture, Agricultural Experiment Station, 1957), by Robert Lee Fox and William A. Albrecht (page images at HathiTrust; US access only)
• Plant chemical composition and soil fertility (University of Nevada, Max C. Fleischmann College of Agriculture, Agricultural Experiment Station, 1961), by L. E. Dunn (page images at HathiTrust; US access only)
• Effect of tillage interval of fallow on available soil nitrogen, some soil physical properties and wheat yields (Agricultural Experiment Station, North Dakota State University, 1974), by Armand Bauer and Thomas John Conton (page images at HathiTrust; US access only)
• Effects of soil fertility levels on the quality of fresh and processed tomatoes, sweet corn, cabbage (Ohio Agricultural Experiment Station, 1953), by H. D. Brown (page images at HathiTrust; US access only)
• Manuring the soil (Oklahoma Agricultural Experiment Station, 1901), by John Fields (page images at HathiTrust)
• Soil and crop factors for fertilizer recommendations (Oklahoma Agricultural Experiment Station, 1958), by J. Q. Lynd (page images at HathiTrust; US access only)
• Soil fertility (Pennsylvania State College Agricultural Experiment Station, 1909), by Thomas F. Hunt (page images at HathiTrust)
• Effect on soils and crops of long continued use of sulfate of ammonia and nitrate of soda with and without lime (Agricultural Experiment Station, University of Rhode Island, 1959), by Micah Wei-ming Leo, Robert S. Bell, and T. E. Odland (page images at HathiTrust; US access only)
• Principles and maintenance of soil fertility (University of Wisconsin, Agricultural Experiment Station, 1906), by A. R. Whitson and C. W. Stoddart (page images at HathiTrust)
• Building fertility in exposed subsoil (Ohio Agricultural Experiment Station, 1956), by Myron Ansel Bachtell, George S. Taylor, and C. J. Willard (page images at HathiTrust; US access only)
• Effect of summer-seeded green manures on soil structure and availability of nitrogen (Ohio Agricultural Experiment Station, 1960), by J. L. Mortensen and J. L. Young (page images at HathiTrust; US access only)
• The reaction of soils in the field as influenced by the long-continued use of fertilizer chemicals (Agricultural Experiment Station of the Rhode Island State College, 1922), by P. S. Burgess (page images at HathiTrust)
• The results of twenty years complete soil fertility tests at Brookings, S.D. (Agricultural Experiment Station, South Dakota State College of Agriculture and Mechanic Arts, 1933), by Joseph Gladden Hutton (page images at HathiTrust; US access only)
• Soil investigations (University of Minnesota, Agricultural Experiment Station, Division of Agricultural Chemistry, 1905), by Harry Snyder and J. A. Hummel (page images at HathiTrust)
• The effect of strongly calcareous soils on the growth and ash composition of certain plants (Porto Rico Agricultural Experiment Station, 1914), by P. L. Gile and Charles Norman Ageton (page images at HathiTrust)
• Dei prati artificiali in Toscana: ricerche (A. Bettini, 1864), by Pietro Cuppari and Antonio Cavagna Sangiuliani di Gualdana (page images at HathiTrust)
• Die rationelle Pflanzenbau (F. Enke, 1857), by J. G. Meyer (page images at HathiTrust)
• Soil fertility studies, with special reference to certain soils of St. Clair County, Illinois (1903), by Gustave Herman Eidmann (page images at HathiTrust; US access only)
• Bread from stones a new and rational system of land fertilization and physical regeneration (Planet Pub. House, 1917), by Julius Hensel (page images at HathiTrust; US access only)
• Soil fertility its economic maintenance and increase : an address to Farmers' Insitute Workers (Dept. of Agriculture, 1916), by Frank T. Shutt and Dominion Experimental Farms and Stations (Canada) (page images at HathiTrust; US access only)
• The farmer as a manufacturer part II. Soils, their origin and nature; fertility; its maintenance and increase (Dept. of Agriculture, 1919), by A. T. Stuart and Dominion Experimental Farms and Stations (Canada) (page images at HathiTrust)
• Fertilizers and their use in Canada (Federated Press, 1917), by Frank T. Shutt and Canada. Commission of Conservation. Committee on Lands (page images at HathiTrust)
• Topsoil and seeding studies at Purdue University, Indiana (Waterways Experiment Station, 1954), by Eldon J. Yoder, Waterways Experiment Station (U.S.), and United States Army Corps of Engineers (page images at HathiTrust)
• First principles of soil fertility (Kegan Paul, Trench, Trubner ;, 1909), by Alfred Vivian (page images at HathiTrust; US access only)
• Soils and soil fertility (Webb, 1920), by A. R. Whitson and Harlow L. Walster (page images at HathiTrust)
• Soil fertility level as it influences plant nutrient composition and consumption (Purdue University Agricultural Experiment Station, 1942), by Robert E. Lucas, George Dewey Scarseth, and Dale H. Sieling (page images at HathiTrust; US access only)
• A new method for rendering insoluble phosphates available (Georgia Experiment Station, 1920), by T. E. Keitt and A. W. Murray (page images at HathiTrust)
• Soil experiments on the dark prairies of central and northeast Missouri (University of Missouri, College of Agriculture, Agricultural Experiment Station, 1915), by M. F. Miller, C. B. Hutchison, and Robert R. Hudelson (page images at HathiTrust)
• Measurements of soil fertility (New York Agricultural Experiment Station, 1916), by Whitman H. Jordan (page images at HathiTrust)
• Soil experiments on the red limestone upland of southwest Missouri (University of Missouri, College of Agriculture, Agricultural Experiment Station, 1915), by M. F. Miller, C. B. Hutchison, and Robert R. Hudelson (page images at HathiTrust)
• The problem of fertility in the middle west : address (s.n., 1914), by William H. Bowker and Horace Bowker (page images at HathiTrust)
• Topsoil and seeding studies at Vicksburg, Mississippi (Waterways Experiment Station, 1953), by Waterways Experiment Station (U.S.) and United States Army Corps of Engineers (page images at HathiTrust)
• Fertility maintenance by rotation and manure (Utah Agricultural Experiment Station, 1936), by D. W. Pittman (page images at HathiTrust; US access only)
• Effect of soil moisture, soil fertility, and rate of seeding on the yield, viability, and quality of seed peas (Utah Agricultural Experiment Station, 1966), by L. R. Hawthorn and Leonard Heber Pollard (page images at HathiTrust; US access only)
• Cropping systems and soil fertility (University of Missouri, Agricultural Experiment Station, 1942), by George E. Smith (page images at HathiTrust; US access only)
• An economic survey of the "Dixie" section, Washington County, Utah, with special reference to production and marketing of truck crops and fruit (Utah Agricultural Experiment Station, 1930), by W. Preston Thomas (page images at HathiTrust; US access only)
• Chemical principles of soil fertility (University of Illinois, 1908), by Cyril G. Hopkins and University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station (page images at HathiTrust)
• Some effects of legumes in relation to economical crop production (New York State Agricultural Experiment Station, 1931), by R. C. Collison (page images at HathiTrust; US access only)
• Soil conservation (U.S. Dept. of Agriculture ;, 1910), by W. J. Spillman and United States Department of Agriculture (page images at HathiTrust)
• Root development of field crops (McGraw-Hill Book Company, 1926), by John E. Weaver (page images at HathiTrust)
• Caring for the fertility of Illinois soils (University of Illinois College of Agriculture and Agricultural Experiment Station, 1929), by L. H. Smith and F. C. Bauer (page images at HathiTrust; US access only)
• The influence of available nitrogen on the decomposition of cellulose by microorganisms (1924), by H. Heukelekian (page images at HathiTrust; US access only)

More items available under broader and related terms at left.