References



1. Ackerson, Jason P. 2018. Soil Sampling Guidelines. Purdue University Cooperative Extension Service: West Lafayette, Indiana. AY-368-W.
2. Allen, R.G., L.S. Pereira, D. Raes, and M. Smith. 1998. Crop Evapotranspiration-Guidelines for Computing Crop Water Requirements. Food and Agriculture Organization (FAO) of the United Nations: Rome, Italy. FAO Irrigation and Drainage Paper 56: D05109.
3. Ames, Guy K. 2017. Soils and Sites for Organic Orchards and Vineyards. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana. IP549.
4. Amundson, Olivia. 2022. Swath Grazing. South Dakota State University Extension: Brookings, South Dakota.
5. Anderson, Nicole P. and others. 2010. Evaluating Soil Nutrients and pH by Depth. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. EM 9014.
6. Anderson, N.P., J.M. Hart, D.M. Sullivan, N.W. Christensen, D.A. Horneck, and G.J. Pirelli. 2013. Applying Lime to Raise Soil pH for Crop Production (Western Oregon). Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. EM 9057.
7. Arshad, M.A., B. Lowery, and B. Grossman. 1996. Physical Tests for Monitoring Soil Quality. In: Methods for Assessing Soil Quality. J.W. Doran and A.J. Jones (Eds.). Madison, Wisconsin: Soil Science Society of America. Publication 49.
8. Ayers, R.S. and D.W. Westcott. 1985. Water Quality for Agriculture. Food and Agriculture Organization (FAO) of the United Nations: Rome, Italy. FAO Irrigation and Drainage Paper 29.
9. Barbosa, Roberto N. and Charles Overstreet. 2011. What Is Soil Electrical Conductivity? Louisiana State University, Louisiana Cooperative Extension Service: Baton Rouge, Louisiana. Publication 3185.
10. Barker, David J. and others. 2017. Ohio Agronomy Guide. 15th ed. The Ohio State University, College of Food, Agricultural, and Environmental Sciences: Columbus, Ohio. Bulletin 472.
11. Bary, Andy, Craig Cogger, and Dan Sullivan. 2012. Fertilizing with Manure and Other Organic Amendments. Washington State University Cooperative Extension: Pullman, Washington. PNW533.
12. Bauder, T.A., Reagan M. Waskom, and Erik M. Wardle. 2014. Managing Saline Soils. Colorado State University Extension: Fort Collins, Colorado. Fact Sheet No. 0.503.
13. Bauder, Troy A., Reagan M. Waskom, and Erik M. Wardle. 2021. Agricultural Nitrogen Management: Best Management Practices. Colorado State University Extension: Fort Collins, Colorado. Bulletin XCM-172.
14. Bauer, R.B. and K. Jurcek. 2017. Pasture Soil Health & Grazing Network Coordinator Toolkit. GrassWorks, Inc.: West Bend, Wisconsin.
15. Beegle, Douglas B. and Dwight D. Lingenfelter. 2014. Soil Acidity and Aglime. The Pennsylvania State University, Penn State Extension: State College. UC038.
16. Beetz, Alice and Lee Rinehart. 2006. Pastures: Sustainable Management. Technology (NCAT): Butte, Montana. IP284.
17. Bellows, Barbara C. 2005. Soil Management: National Organic Program Regulations. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana. IP270.
18. Berg, Mary, Miranda Meehan, David Franzen, and Thomas Scherer. 2018. Phosphorus Behavior in the Environment. North Dakota State University Extension: Fargo, North Dakota. NM1298.
19. Bergtold, Jason and Marty Sailus (Eds.). 2020. Conservation Tillage Systems in the Southeast: Production, Profitability, and Stewardship. Sustainable Agriculture Research and Education (SARE): College Park, Maryland. SARE handbook series 15.
20. Bidwell, T.G. and Bob Woods. 2017. Management Strategies for Rangeland and Introduced Pastures. Oklahoma State University, Oklahoma Cooperative Extension Service: Stillwater, Oklahoma. NREM-2869.
21. Bierman, Peter M. and Carl J. Rosen. 2005. Nutrient Management for Fruit & Vegetable Crop Production. University of Minnesota Extension Service: Minneapolis, Minnesota.
22. Blanco-Canqui, H. and S.J. Ruis. 2020. Cover Crop Impacts on Soil Physical Properties: A Review. Soil Science Society of America Journal, 84.
23. Bot, Alexandra and José Benites. 2005. The Importance of Soil Organic Matter: Key to Drought-Resistant Soil and Sustained Food and Production. Food and Agriculture Organization (FAO) of the United Nations: Rome, Italy. Bulletin 80.
24. Boyhan, George and Emma Dawson. 2022. An Introduction to Conservation Tillage for Vegetable Production. University of Georgia Extension: Athens, Georgia. Bulletin 1539.
25. Brackenrich, Justin L. and others. 2023. Integrating Grazing into Cropping Systems: Cover Crop Species and Crop Rotation Considerations. The Pennsylvania State University, Penn State Extension: State College. EE0790.
26. Bravo O. and J.C. Silenzi. 2002. Strip Cropping in the Semi-Arid Region of Argentina: Control of Wind Erosion and Soil Water Accumulation. Soil Science, 167.
27. Brevik, Eric C. 2013. The Potential Impact of Climate Change on Soil Properties and Processes and Corresponding Influence on Food Security. Agriculture, 3.
28. Bugg, Robert L. and others. 1999. Cover Cropping in Vineyards: An Introduction to Vineyard Cover Crop Management. University of California Cooperative Extension Amador County: Airport Road, Jackson, California. Publication 1975.
29. Cahn, Michael. 2015. Managing Salts by Leaching. University of California Agriculture and Natural Resources: Richmond, California. ANR Publication 8550.
30. Cardon, Grant E., Jan Kotuby-Amacher, Pam Hole, and Rich Koenig. 2008. Understanding Your Soil Test Report. Utah State University Cooperative Extension: Logan, Utah. AG/Soils/2008-01pr.
31. Carey, Peter, Quirine Ketterings, and Mike Hunter. 2006. Liming Materials. Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 7.
32. Cataldo, Eleonora, Maddalena Fucile, and Giovan Battista Mattii. 2011. A Review: Soil Management, Sustainable Strategies and Approaches to Improve the Quality of Modern Viticulture. Agronomy, 11(2359).
33. Chambers, A., R. Lal, and K. Paustian. 2016. Soil Carbon Sequestration Potential of US Croplands and Grasslands: Implementing the 4 per Thousand Initiative. Journal of Soil & Water Conservation, 71(3).
34. Chan, K.Y., M.K. Conyers, G.D. Li, K.R. Helyar, G. Poile, A. Oates, and I.M. Barchia. 2010. Soil Carbon Dynamics Under Different Cropping and Pasture Management in Temperate Australia: Results of Three Long-Term Experiments. Soil Research, 49.
35. Cihacek, Larry. 2021. What is Soil Acidity? North Dakota State University Extension: Fargo, North Dakota. SF2012.
36. Clark, Kathryn and Douglas Beegle. 2014. Nutrient Management to Improve Nitrogen Use Efficiency and Reduce Environmental Losses. The Pennsylvania State University, Penn State Extension: State College. EE0094.
37. Coffey, Linda and Tracy Mumma. 2014. Integrating Livestock and Crops: Improving Soil, Solving Problems, Increasing Income. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana. IP475.
38. Cogger, Craig. 2000. Soil Management for Small Farms. Washington State University Cooperative Extension: Pullman, Washington. EB1895.
39. Corp, M.K., D.A. Horneck, D. Wysocki, and L. Lutcher. 2006. Monitoring Soil Nutrients in Dryland Systems Using Management Units. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. EM 8920-E.
40. Curtin, D. and J.K. Syers. 1990. Extractability and Adsorption of Sulfate in Soils. Journal of Soil Science, 41.
41. Dari, Biswanath, Christopher W. Rogers, and Olga S. Walsh. 2019. Understanding Factors Controlling Ammonia Volatilization from Fertilizer Nitrogen Applications. University of Idaho Extension: Moscow, Idaho. Bulletin 926.
42. Datta, Sumon, Saleh Taghvaeian, and Jacob Stivers. 2017. Understanding Soil Water Content and Thresholds for Irrigation Management. Oklahoma State University, Oklahoma Cooperative Extension Service: Stillwater, Oklahoma. BAE-1537.
43. Davis, J.G., R.M. Waskom, and T.A. Bauder. 2012. Managing Sodic Soils. Colorado State University Extension: Fort Collins, Colorado. Fact Sheet No. 0.504.
44. Delate, Kathleen and Ajay Nair. Crop Rotations, Composting and Cover Crops: For Organic Vegetable Production. Iowa State University Extension and Outreach: Ames, Iowa. HORT 3052.
45. Dillon, Jasmine and Megan Machmuller. 2021. Regenerative Grazing, Carbon, and Climate. Colorado State University, Wallace Center: Fort Collins, Colorado.
46. Dinkins, Pariera and Clain Jones. 2008. Soil Sampling Strategies. Montana State University, Montana State University Extension Service: Bozeman, Montana. MT200803AG.
47. Dinkins, Pariera and Clain Jones. 2013. Interpretation of Soil Test Reports for Agriculture. Montana State University, Montana State University Extension Service: Bozeman, Montana. MT200702AG.
48. Drewnoski, Mary E. and Humberto Blanco. 2015. Effect of Grazing Double-Cropped Annual Forages on Soil and Crop Yields. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. G2264.
49. Duiker, Sjoerd W. (Ed.). 2004. Effects of Soil Compaction. The Pennsylvania State University, College of Agricultural Sciences, Agricultural Research and Cooperative Extension: State College. CAT UC188.
50. Duiker, Sjoerd Willem and Zachary Larson. 2022. Frost Seeding - A Technique for Interseeding Cover Crops and Improving Forage Stands. Purdue University Cooperative Extension Service: West Lafayette, Indiana. EE0620.
51. Duncan, Lori A. 2014. Row Crop Sustainability. The University of Tennessee Extension, Institute of Agriculture: Knoxville, Tennessee. W 311-A.
52. DuPont, Tianna, David Granatstein, and Bernardita Sallato. 2020. Soil Health in Orchards. Washington State University Cooperative Extension: Pullman, Washington. EM120E.
53. Easton, Zachary M. and Emily Bock. 2016. Soil and Soil Water Relationships. Virginia Tech, Virginia State University, Virginia Cooperative Extension: Blacksburg, Virginia. Publication BSE-194P.
54. Easton, Zachary M., Emily Bock, and Amy S. Collick. 2016. Factors When Considering an Agricultural Drainage System. Virginia Tech, Virginia State University, Virginia Cooperative Extension: Blacksburg, Virginia. Publication BSE-208.
55. Eck, Kenneth J. and Darrell E. Brown. 2004. Managing Crop Residue with Farm Machinery. Purdue University Cooperative Extension Service: West Lafayette, Indiana. AY AY-280-W.
56. Edwards, Pamela J. 1998. Sulfur Cycling, Retention, and Mobility in Soils: A Review. United States Department of Agriculture (USDA), Forest Service: Radnor, Pennsylvania. General Technical Report NE-250.
57. Enciso, Juan M., Dana Porter, and Xavier Périès, 2007. Irrigation Monitoring with Soil Water Sensors. The Texas A&M University, Texas Cooperative Extension: College Station, Texas. B-6194.
58. EPA. 2020. Inventory of U.S. Greenhouse Gas Emissions and Sinks. Environmental Protection Agency (EPA): Washington, DC. Webpage accessed 4/29/2019 online at: https://www.epa.gov/ghgemissions/inventory-usgreenhouse-gas-emissions-and-sinks.
59. Espinoza, Leo, Rick Norman, Nathan Slaton, and Morteza Mozaffari. 2005. Understanding the Numbers on Your Soil Test Report. University of Arkansas, Cooperative Extension: Fayetteville, Arkansas. FSA2118.
60. Espinoza, Leo, Rick Norman, Nathan Slaton, and Mike Daniels. 2005. The Nitrogen and Phosphorous Cycle in Soils. University of Arkansas, Cooperative Extension: Fayetteville, Arkansas. FSA2148.
61. Evanylo, Greg and Robert McGuinn. 2009. Agricultural Management Practices and Soil Quality: Measuring, Assessing, and Comparing Laboratory and Field Test Kit Indicators of Soil Quality Attributes. Virginia Tech, Virginia State University, Virginia Cooperative Extension: Blacksburg, Virginia. Publication 452-400.
62. FAO. 2015. Soils Help to Combat and Adapt to Climate Change by Playing a Key Role in the Carbon Cycle. Food and Agriculture Organization (FAO) of the United Nations: Rome, Italy.
63. FAO. 2017. Voluntary Guidelines for Sustainable Soil Management. Food and Agriculture Organization (FAO) of the United Nations: Rome, Italy.
64. Farahani, H.J., R. Khosla, and G.W. Buchleiter. 2011. Field EC Mapping: A New Tool to Make Better Decisions. Colorado State University Extension: Fort Collins, Colorado. Fact Sheet No. 0.568.
65. Faulkner, Joshua W. and Zachary M. Easton. 2014. Agricultural Adaptation to Climate Change: Improving Resilience in Row Crop Production. University of Vermont Extension: Burlington, Vermont.
66. Fenton, Megan, Carl Albers, and Quirine Ketterings. 2008. Soil Organic Matter. Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 41.
67. Ferguson, Richard B., Gary W. Hergert, Charles W. Sharpio, and Charles S. Wortmann. 2007. Guidelines for Soil Sampling. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. G1740.
68. Finney, D., C. White, and J. Kaye. 2016. Biomass Production and Carbon/Nitrogen Ratio Influence Ecosystem Services from Cover Crop Mixtures. Agronomy Journal, 108 (1).
69. Fipps, Guy. 2022. Surge Flow Irrigation. The Texas A&M University, Texas Cooperative Extension: College Station, Texas. BN-013.
70. Fipps, Guy. 2003. Irrigation Water Quality Standards and Salinity Management Strategies. The Texas A&M University, Texas Cooperative Extension: College Station, Texas.
71. Flynn, Robert and April Ulery. 2011. An Introduction to Soil Salinity and Sodium Issues in New Mexico. New Mexico State University, Cooperative Extension Service: Las Cruces, New Mexico. Circular 656.
72. Foth Henry D. 1991. Fundamentals of Soil Science. 8th ed. John Wiley and Sons, Inc.: New York, New York.
73. Francis, Charles A., Cornelia B. Flora, and Larry D. King. 1990. Sustainable Agriculture in Temperate Zones. John Wiley and Sons, Inc.: New York, New York.
74. Gasch, Caley and Jodi DeJong-Hughes. 2019. Soil Organic Matter Does Matter. North Dakota State University Extension: Fargo, North Dakota. SF1942.
75. Gavrilescu, M. 2021. Water, Soil, and Plants Interactions in a Threatened Environment. Water, 13(2746).
76. Ghane, Ehsan. 2018. Agricultural Drainage. Michigan State University Extension: East Lansing, Michigan. E-3370.
77. Gibson, Lance, Jeremy Singer, Stephen Barnhart, and Brock Blaser. 2013. Intercropping Winter Cereal Grains and Red Clover. Iowa State University Extension and Outreach: Ames, Iowa.
78. Girma, Kefyalew, Hailin Zhang, and Warren Roberts. 2017. Building Soil Organic Matter for a Sustainable Organic Crop Production. Oklahoma State University, Oklahoma Cooperative Extension Service: Stillwater, Oklahoma. PSS-2257.
79. Gladstones, J. 1992. Viticulture and Environment. Winetitles: Adelaide, Australia.
80. Godsey, Chad, Rick Kochenower, and Randy Taylor. 2017. Strip-till Considerations in Oklahoma. Oklahoma. Oklahoma State University, Oklahoma Cooperative Extension Service: Stillwater, Oklahoma. PSS-2134.
81. Grant, Joseph and others. 2006. Cover Crops for Walnut Orchards. University of California Agriculture and Natural Resources: Richmond, California. Publication 21627.
82. Grattan, Stephen. 2002. Irrigation Water Salinity and Crop Production. University of California Agriculture and Natural Resources: Richmond, California. Publication 8066.
83. Grisso, Robert, Mark Alley, W.G. Wysor, David Holshouser, and Wade Thomason. 2009. Precision Farming Tools: Soil Electrical Conductivity. Virginia Tech, Virginia State University, Virginia Cooperative Extension: Blacksburg, Virginia. Publication 442-508.
84. Grisso, Robert, David Holshouser, and Robert Pitman. 2014. Planter/Drill Considerations for Conservation Tillage Systems. Virginia Tech, Virginia State University, Virginia Cooperative Extension: Blacksburg, Virginia. Publication 442-457.
85. Hanna, Mark. 2009. Understanding & Managing Soil Compaction. Iowa State University Extension and Outreach: Ames, Iowa. PM 1901b.
86. Hanson, B., S. Orloff, and D. Peters. 2000. Monitoring Soil Moisture Helps Refine Irrigation Management. California Agriculture, 54(3).
87. Hanson, Blaine R., Stephen R. Grattan, and Allan Fulton. 2006. Agricultural Salinity and Drainage. University of California Agriculture and Natural Resources: Richmond, California. Publication 3375.
88. Hart, J.M., D.M. Sullivan, N.P. Anderson, A.G. Hulting, D.A. Horneck, and N.W. Christensen. 2013. Soil Acidity in Oregon: Understanding and Using Concepts for Crop Production. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. EM 9061.
89. Havlin, J.L., J.D. Beaton, S.L. Tisdale, and W.L. Nelson. 1999. Soil Fertility and Fertilizers. 6th Edition. Prentice Hall: Upper Saddle River, New Jersey.
90. Hernandez, Jose A. and Michael A. Schmitt. 2012. Manure Management in Minnesota. University of Minnesota Extension Service: Minneapolis, Minnesota. WW-03553.
91. Higgins, Steve and Morgan Hayes. 2020. How Understanding and Managing Soil Organic Matter Can Improve Beef Cattle Production. University of Kentucky; College of Agriculture, Food and Environment; Cooperative Extension Service: Lexington, Kentucky. AEN-153.
92. Hilshey, Bridgett and Christian Bench. 2020. A Practical Guide to No-Till and Cover Crops. Northeast Sustainable Agriculture Research and Education (SARE): South Burlington, Vermont. ENE19-157.
93. Hochmuth, George, Robert Hochmuth, and Rao Mylavarapu. 2020. Using Composted Poultry Manure (Litter) in Mulched Vegetable Production. University of Florida, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences: Gainesville, Florida. SL293.
94. Hong, Eun, Quirine Ketterings, and Tom Bruulsema. 2009. Boron. Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 47.
95. Horneck, D.A., J.W. Ellsworth, B.G. Hopkins, D.M. Sullivan, and R.G. Stevens. 2007. Managing Salt-affected Soils for Crop Production. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. PNW 601-E.
96. Howard, P. and D.M. Howard. 1990. Use of Organic Carbon and Loss-on-Ignition to Estimate Soil Organic Matter in Different Soil Types and Horizons. Biology and Fertility of Soils, 9.
97. Howell, John. 2012. Crop Management in the Field: Nutrient Management Guide for New England Vegetable Production. University of Massachusetts Extension: Amherst, Massachusetts.
98. Hoyle, Frances. 2013. Managing Soil Organic Matter: A Practical Guide. Grains Research and Development Corporation: Queensland, Australia. KDI00023.
99. Hoyt, G.D., D.W. Monks, and T.J. Monaco. 1994. Conservation Tillage for Vegetable Production. HortTechnology, 4(2).
100. Hutchinson, Robert L. and others. 2012. Louisiana Conservation Tillage Handbook. Louisiana State University, Louisiana Cooperative Extension Service: Baton Rouge, Louisiana. Publication 3216.
101. Hyland, Charles and others. 2005. Phosphorus Basics – The Phosphorus Cycle. Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 12.
102. Idowu, John and Sangu Angadi. 2013. Understanding and Managing Soil Compaction in Agricultural Fields. New Mexico State University, Cooperative Extension Service: Las Cruces, New Mexico. Circular 672.
103. IPCC. 2014. Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). [Core Writing Team, R.K. Pachauri and L.A. Meyer (eds.)]. IPCC, Geneva, Switzerland. Webpage accessed 10/7/2022 online at: https://ar5-syr.ipcc.ch/ipcc/ipcc/resources/pdf/IPCC_SynthesisReport.pdf.
104. IPCC. 2019. Special Report on Climate Change, Desertification, Land Degradation, Sustainable Land Management, Food Security, and Greenhouse Gas Fluxes in Terrestrial Ecosystems. U. N. Environmental Programme. Webpage accessed 2/20/2023 online at: https://ar5-syr.ipcc.ch/ipcc/ipcc/resources/pdf/IPCC_SynthesisReport.pdf.
105. Irmak, Suat and others. 2016. Principles and Operational Characteristics of Watermark Granular Matrix Sensor to Measure Soil Water Status and Its Practical Applications for Irrigation Management in Various Soil Textures. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. EC783.
106. Irmak, Suat. 2019. Soil-Water Potential and Soil-Water Content Concepts and Measurement Methods. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. EC3046.
107. Jahromi, Nastaran Basiri, Amy Fulcher, and Forbes Walker. 2019. What Is Biochar and How Different Biochars Can Improve Your Crops. The University of Tennessee Extension, Institute of Agriculture: Knoxville, Tennessee. W 829.
108. Johnson, K., C.L. Rhykerd, and J.O. Trott. 1997. Forage Selection and Seeding Guide for Indiana. Purdue University, Agronomy Department, Cooperative Extension Service: West Lafayette, Indiana.
109. Johnson, A.M. and G.D. Hoyt. 11999. Changes to the Soil Environment under Conservation Tillage. HortTechnology, 9(3).
110. Johnson, Courtney, Greg Albrecht, Quirine Ketterings, Jen Beckman, and Kristen Stockin. 2005. Nitrogen Basics – The Nitrogen Cycle. Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 2.
111. Johnson, Jane M.F., David W. Archer, Douglas L. Karlen, Sharon L. Weyers, and Wally W. Wilhelm. 2011. Soil Management Implications of Producing Biofuel Feedstock. Publications from USDA-ARS/UNL Faculty. 1380. Webpage accessed 5/7/2021 online at: https://digitalcommons.unl.edu/usdaarsfacpub/1380.
112. Jones, Clain and Jeff Jacobsen. 2009. Micronutrients: Cycling, Testing and Fertilizer Recommendations. Montana State University Extension: Bozeman, Montana. Bulletin 4449-7.
113. Jones, Clain, Brad D. Brown, Rick Engel, Don Horneck, and Kathrin Olson-Rutz. 2013. Factors Affecting Nitrogen Fertilizer Volatilization. Montana State University Extension: Boseman, Montana. Bulletin EB0208.
114. Jones, Clain, Brad D. Brown, Rick Engel, Don Horneck, and Kathrin Olson-Rutz. 2020. Management to Minimize Nitrogen Fertilizer Volatilization. Montana State University Extension: Boseman, Montana. Bulletin EB0209.
115. Kane, Daniel. 2015. Carbon Sequestration Potential on Agricultural Lands: A Review of Current Science and Available Practices. National Sustainable Agriculture Coalition: Washington, DC.
116. Kaspar, T.C. and J.W. Singer. 2011. The Use of Cover Crops to Manage Soil. Publications from USDAARS/ UNL Faculty. 1382. Webpage accessed 8/21/2020 online at: https://digitalcommons.unl.edu/usdaarsfacpub/1382.
117. Kelling, K.A. 1993. Soil and Applied Boron. University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A2522.
118. Kelling, K.A. 1993. Soil Calcium to Magnesium Ratios—Should you be concerned? University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A2986.
119. Ketterings, Quirine, Karl Czymmek, Greg Albrecht, Kristen Keryk, Kristen Stockin, and Jen Beckman. 2005. Soil Sampling for Field Crops. Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 1.
120. Ketterings, Quirine, Greg Albrecht, Karl Czymmek, and Shawn Bossard. 2005. Nitrogen Credits from Manure. Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 4.
121. Ketterings, Quirine, Shaw Reid, and Renuka Rao. 2007. Cation Exchange Capacity (CEC). Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 22.
122. Ketterings, Quirine, Greg Albrecht, Karl Czymmek, and Kristen Stockin. 2012. Pre-sidedress Nitrate Test. Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 3.
123. Ketterings, Quirine and Karl Czymmek. 2016. The Carbon Cycle and Soil Organic Carbon. Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 91.
124. Kladivko, Eileen and others. 2015. Managing Cover Crops: An Introduction to Integrating Cover Crops into a Corn-Soybean Rotation. Purdue University Cooperative Extension Service: West Lafayette, Indiana. AY-353-W.
125. Korb, Nathan, Clain Jones, and Jeff Jacobsen. 2005. Potassium Cycling, Testing, and Fertilizer Recommendations. Montana State University, Montana State University Extension Service: Bozeman, Montana. Nutrient Management Module No. 5.
126. Kovar, John L. and Cynthia A. Grant. 2011. Nutrient Cycling in Soils: Sulfur. Publications from USDAARS/UNL Faculty. 1383.
127. Laboski, Carrie A.M. and John B. Peters. Nutrient Application Guidelines for Field, Vegetable, and Fruit Crops in Wisconsin. University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A2809.
128. Lal, R. 2004. Soil Carbon Sequestration Impacts on Global Climate Change and Food Security. Science, 304 (5677).
129. LaRose, Joe, Rob Myers, Ashley Conway, and Harley Naumann. 2021. Grazing Cover Crops. University of Missouri Extension: Columbia, Missouri. G4165.
130. Leep, Richard and others. 2023. Steps to Successful No-till Establishment of Forages. Michigan State University Extension: East Lansing, Michigan. E–2880.
131. Legleiter, Travis, Bill Johnson, Tom Jordan, and Kevin Gibson. 2012. Successful Cover Crop Termination with Herbicides. Purdue University, Cooperative Extension Service: West Lafayette, Indiana. WS-50-W.
132. Lemus, Rocky. 2019. Adding Cover Crops to Crop Production and Grazing Systems. Mississippi State University Extension Service: Mississippi State, Mississippi. Volume 11, Issue 2.
133. Lemus, Rocky. 2019. Strategies for Better Management of Pasture Fertilization. Mississippi State University Extension Service: Mississippi State, Mississippi. Publication 2497.
134. Lightner, J.W., D.B. Mengel, and C.L. Rhykerd. 1990. Ammonia Volatilization from Nitrogen Fertilizer Surface Applied to Orchardgrass Sod. Soil Science Society of America Journal, 54.
135. Liu, G.D., E.H. Simonne, K.T. Morgan, and G.J. Hochmuth. 2018. Soil and Fertilizer Management for Vegetable Production in Florida. University of Florida, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences: Gainesville, Florida. HS711.
136. Longbottom, Todd and others. 2022. What’s Soil Got to Do with Climate Change? The Geological Society of America, 32(5).
137. Luna, John and Mary Staben. 2003. Using Strip Tillage in Vegetable Production Systems in Western Oregon. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. EM 8824.
138. Lupis, S.G., J.G. Davis, and N. Embertson.2012. Best Management Practices for Reducing Ammonia Emissions: Manure Application. Colorado State University Extension: Fort Collins, Colorado. Fact Sheet No. 1.631D.
139. Lutz, Jamie and Caitlin Welsch. 2022. Soil Carbon Sequestration: Myths, Realities, and the Biden Administration’s Proposals. Center for Strategic and International Studies. Webpage accessed 5/12/2020 online at: https://www.csis.org/analysis/soil-carbon-sequestration-myths-realities-and-biden-administrations-proposals.
140. MAFRI. 2008. Soil Management Guide. Manitoba Agriculture, Food and Rural Initiatives: Winnipeg, Manitoba, Canada.
141. Magdoff, Fred and Harold Van Es. 2021. Building Soils for Better Crops: Ecological Management for Health Soils. Sustainable Agriculture Research and Education (SARE): College Park, Maryland. Handbook Series Book 10.
142. Marr, Charles W., Rhonda Jankie, and Paul Conway. 1998. Cover Crops for Vegetable Growers. Kansas State University Agricultural Experiment Station and Cooperative Extension Service: Manhattan, Kansas. MF 2343.
143. Mamo, Martha, Charles S. Wortmann, and Charles A. Shapiro. 2015. Lime Use for Soil Acidity Management. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. G1504.
144. Maughan, Tiffany and Dan Drost. 2016. Introduction to Cover Crops for Vegetable Production in Utah. Utah State University Cooperative Extension: Logan, Utah.
145. McCauley, Ann, and Clain Jones. 2005. Managing Soil Erosion. Montana State University, Montana State University Extension Service: Bozeman, Montana. 4481-3.
146. McCauley, Ann, Clain Jones, and Jeff Jacobsen. 2005. Basic Soil Properties. Montana State University, Montana State University Extension Service: Bozeman, Montana. 4481-1.
147. McCauley, Ann and Clain Jones. 2005. Salinity and Sodicity Management. Montana State University, Montana State University Extension Service: Bozeman, Montana. 4481-2.
148. McCauley, Ann, Clain Jones, and Jeff Jacobsen. 2009. Soil pH and Organic Matter. Montana State University, Montana State University Extension Service: Bozeman, Montana. 4449-8.
149. McFarland, Mark L., Vincent A. Haby, Larry A. Redmon, and David H. Bade. 2005. Managing Soil Acidity. The Texas A&M University, Texas Cooperative Extension: College Station, Texas. SCS-2001-05.
150. Medic, A. and Consuelo B. Baez Vega. 2021. Benefits of Cover Cropping Systems in Walnut Orchards as Sustainable Agricultural Practice. Journal of Sustainability and Climate Change, 1.
151. Miller, Jarrod O. 2016. Soil pH Affects Nutrient Availability. University of Maryland Extension: College Park, Maryland. Fact Sheet FS-1054.
152. Mitchell, Jeffery, Louise Jackson, and Gene Miyao. 2004. Minimum Tillage Vegetable Crop Production in California. University of California Agriculture and Natural Resources: Richmond, California. Publication 8132.
153. Mitchel, J.P. and others. 2009. Classification of Conservation Tillage Practices in California Irrigated Row Crop Systems. University of California Agriculture and Natural Resources: Richmond, California. Publication 8364.
154. Mitchell, Jeff and others. 2009. Strip-Tillage in California’s Central Valley. University of California Agriculture and Natural Resources: Richmond, California. Publication 8361.
155. Mohler, Charles L. and Sue Ellen Johnson (Eds.) 2020. Crop Rotation on Organic Farms: A Planning Manual. Natural Resource, Agriculture, and Engineering Service: College Park, Maryland. Publication 177.
156. Morse, Ronald D. 1999. No-till Vegetable Production—Its Time is Now. HortTechnology, 9(3).
157. Mosley, Jeff. 2022. Grazing Cover Crops in Late Fall or Winter. Montana State University, Montana State University Extension Service: Bozeman, Montana. Webpage accessed online 10/21/2022 at: https://apps.msuextension.org/magazine/assets/docs/LILA%20Fall%202020%20web-Grazing%20Cover%20Crops%207-8.pdf.
158. Murphy, Stephanie, Daniel Giménez, Loren S. Muldowney, and Joseph R. Heckman. 2012. Soil Organic Matter Level and Interpretation. Rutgers, The State University of New Jersey: New Brunswick, New Jersey. Fact Sheet FS1136.
159. Myers, Rob, Alan Weber, and Sami Tellatin. 2019. Cover Crop Economics Opportunities to Improve Your Bottom Line in Row Crops. Sustainable Agriculture Research and Education (SARE): College Park, Maryland.
160. Mylavarapu, Rao S. and Won Suk Daniel Lee. 2020. UF/IFAS Nutrient Management Series: Soil Sampling Strategies for Precision Agriculture. University of Florida, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences: Gainesville, Florida. SL190.
161. Nair, Ajay, Tom Kaspar, and Gail Nonnecke. 2015. Cover Crops in Vegetable Production Systems. Iowa State University Extension and Outreach: Ames, Iowa. HORT 3026.
162. Nair, Ajay, Jennifer Tillman, and Timothy Coolong. 2015. Conservation Techniques for Vegetable Production: Combining Strip Tillage and Cover Crops. Iowa State University Extension and Outreach: Ames, Iowa. HORT 3030.
163. Nair, Ajay. 2017. Soil Health for Vegetable Crops. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. Webpage accessed 8/11/2023 online at: https://www.extension.iastate.edu/smallfarms/soil-health-vegetable-crops.
164. NSAC. 2019. Agriculture and Climate Change: Policy Imperatives and Opportunities to Help Producers Meet the Challenge. National Sustainable Agriculture Coalition (NSAC): Washington D.C.
165. NCAT. 2014. Cover Crop (340) in Organic Systems: California Implementation Guide. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana.
166. Nearing, M.A., F.F. Pruski, and M.R. O’Neal. 2004. Expected Climate Change Impacts on Soil Erosion Rates: A Review. Journal of Soil and Water Conservation, 59(1).
167. O’Green, Anthony Toby, Terry L. Prichard, Rachel Elkins, and G. Stuart Pettygrove. 2006. Orchard Floor Management Practices to Reduce Erosion and Protect Water Quality. University of California Agriculture and Natural Resources: Richmond, California. Publication 8202.
168. O’Green, Anthony. 2015. Reclaiming Saline, Sodic, and Saline-Sodic Soils. University of California Agriculture and Natural Resources: Richmond, California. ANR Publication 8519.
169. Oldham, Larry. 2012. Nutrient Management Guidelines for Agronomic Crops Grown in Mississippi. Mississippi State University Extension Service: Mississippi State, Mississippi. Publication 2647.
170. Olmstead, Mercy Anne. 2006. Cover Crops as a Floor Management Strategy for Pacific Northwest Vineyards. Washington State University Cooperative Extension: Pullman, Washington. EB2010.
171. Olson-Rutz, Kathrin, Clain Jones, and Courtney Pariera Dinkins. 2011. Enhanced Efficiency Fertilizers. Montana State University, Montana State University Extension Service: Bozeman, Montana. EB0188.
172. Olson-Rutz, Kathrin and Clain Jones. 2015. Soil Nutrient Management for Forages: Nitrogen. Montana State University, Montana State University Extension Service: Bozeman, Montana. EB0216.
173. Osman, Khan Towhid. 2013. Soils: Principles, Properties and Management. Springer: New York, New York.
174. Peters, John B., Carrie A.M. Laboski, and Larry G. Bundy. 2007. Sampling Soils for Testing. University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A2100.
175. Pingry, John W., Ronald T. Schuler, and Richard P. Wolkowski. 2000. Residue Management Choices: A Guide to Managing Crop Residues in Corn and Soybeans. University of Wisconsin-Extension, Cooperative Extension, Environmental Resources Center: Madison, Wisconsin. GWQ029.
176. Pirela, H.J. and M.A. Tabatabai. 1988. Sulphur Mineralization Rates and Potentials of Soils. Biology and Fertility of Soils, 6.
177. Plaster, Edward J. 2021. Soil Science & Management. 6th ed. Delmar Cengage Learning: Clifton Park, New York.
178. Prasad, Rishi and Debolina Chakraborty. 2019. Understanding Phosphorus Forms and Their Cycling in the Soil. Alabama A&M University and Auburn University, Alabama Cooperative Extension Service: Auburn and Normal, Alabama ANR-2535.
179. Plastina, Alejandro. 2022. How to Grow and Sell Carbon Credits in US Agriculture. Iowa State University Extension and Outreach: Ames, Iowa. File A1-76.
180. Provin, Tony and J.L. Pitt. 2012. Managing Soil Salinity. The Texas A&M University, Texas Cooperative Extension: College Station, Texas. E-60.
181. Qafoku, N.P. 2014. Overview of Different Aspects of Climate Change Effects on Soils. Pacific Northwest National Laboratory: Richland, Washington.
182. Quinn, Dan, Hanna Poffenbarger, and Chad LeeCover. 2019. Crop Benefits and Challenges in Kentucky. University of Kentucky; College of Agriculture, Food and Environment; Cooperative Extension Service: Lexington, Kentucky. AGR-240.
183. Rains, Glen C., Wesley Porter, and Calvin Perry. 2016. Soil Sampling for Precision Management of Crop Production. University of Georgia Extension: Athens, Georgia. Bulletin 1208.
184. Rasby, Rick J., Mary E. Drewnoski, and Aaron Stalker. 2014. Grazing Crop Residues with Beef Cattle. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. EC278.
185. Rayburn, Ed and Tom Basden. 2014. Soil Sampling and Testing. West Virginia University Extension Service: Morgantown, West Virginia.
186. Reicosky, D.C., T.J. Sauer, and J.L. Hatfield. 2011. Challenging Balance Between Productivity and Environmental Quality: Tillage Impacts. Publications from USDA-ARS / UNL Faculty. 1373. Webpage accessed online 5/9/2022 at: https://digitalcommons.unl.edu/usdaarsfacpub/1373.
187. Reyes-Sánchez, Laura Bertha, Rainer Horn, and Edoardo A.C. Costantini (Eds.). 2022. Sustainable Soil Management as a Key to Preserve Soil Biodiversity and Stop its Degradation. International Union of Soil Sciences: Vienna, Austria.
188. Rice, R.W., R.A. Gilbert, and S.H. Daroub. Application of the Soil Taxonomy Key to the Organic Soils of the Everglades Agricultural Area. University of Florida, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences: Gainesville, Florida. SS-AGR-246.
189. Rinehart, Lee. 2017. Building Healthy Pasture Soils. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana. IP564.
190. Rinehart, Lee. 2020. Pasture, Rangeland and Adaptive Grazing. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana. IP306.
191. Rodriguez, Omar and Rex Dufour. 2020. Saline and Sodic Soils: Identification, Mitigation, and Management Considerations. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana. IP602.
192. Rogers, Danny H., Jonathan Aguilar, Isaya Kisekka, Philip L. Barnes, and Freddie R. Lamm. 2015. Important Agricultural Soil Properties. Kansas State University Agricultural Experiment Station and Cooperative Extension Service: Manhattan, Kansas. L935.
193. Ruiz Diaz, Dorivar A., David B. Mengel, and Kent L. Martin. 2011. Phosphorus Facts Soil, Plant, and Fertilizer. Kansas State University Agricultural Experiment Station and Cooperative Extension Service: Manhattan, Kansas. C665.
194. Ruiz Diaz, Dorivar and DeAnn Presley. 2017. Management of Saline and Sodic Soils. Kansas State University Agricultural Experiment Station and Cooperative Extension Service: Manhattan, Kansas. MF1022.
195. Ruiz Diaz, Dorivar. 2019. Chloride in Kansas: Plant, Soil, and Fertilizer Considerations. Kansas State University Agricultural Experiment Station and Cooperative Extension Service: Manhattan, Kansas. MF2570.
196. Rumpel, Cornelia and Abad Chabbi. 2021. Managing Soil Organic Carbon for Mitigating Climate Change and Increasing Food Security. Agronomy, 11(1553).
197. Sanders J and J. Hess (Eds.). 2019. Leistungen des ökologischen Landbaus für Umwelt und Gesellschaft. Braunschweig: Johann Heinrich von Thünen-Institut. Thünen Report 65. Webpage accessed online 5/2/2019 at: https://www.thuenen.de/media/publikationen/thuenen-report/Thuenen_Report_65.pdf.
198. SARE. 2012. Managing Cover Crops Profitably. 3rd ed. Sustainable Agriculture Research and Education (SARE): College Park, Maryland. Handbook Series Book 9.
199. Scherer, H.W. 2009. Sulfur in Soils. Journal of Plant Nutrition and Soil Science, 172.
200. Scherer, Thomas F., David Franzen, and Larry Cihacek (Eds.). 2020. Soil, Water and Plant Characteristics Important to Irrigation. North Dakota State University Extension: Fargo, North Dakota. AE1675.
201. Schonbeck, Mark, Diana Jerkins, and Vicki Lowell. 2019. Soil Health and Organic Farming: Understanding and Optimizing the Community of Soil Life. Organic Farming Research Foundation: Santa Cruz, California.
202. Schoonover, Jon E. and Jackie F. Crim. An Introduction to Soil Concepts and the Role of Soils in Watershed Management. Journal of Contemporary Water Research & Education, 154.
203. Schulte. E.E. 2004. Soil and Applied Chlorine. University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A3556.
204. Schulte, E.E. 2004. Soil and Applied Zinc. University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A2528.
205. Schulte. E.E. 2004. Soil and Applied Iron. University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A3554.
206. Schulte. E.E. and K.A. Kelling. 2004. Soil and Applied Manganese. University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A256.
207. Schulte. E.E. and K.A. Kelling. 2004. Soil and Applied Potassium. University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A251.
208. Schulte, E.E. and others. 2005. Management of Wisconsin Soils. 5th ed. University of Wisconsin-Extension: Madison, Wisconsin. A3588.
209. Scott, Dave and Nina Prater. 2018. Nutrient Cycling in Pastures. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana. IP564.
210. Sedivec, Kevin, Miranda Meehan, Erin Gaugler, Marisol Berti, and Penny Nester. 2020. Annual Cover Crop Options for Grazing in the Northern Plains. North Dakota State University Extension: Fargo, North Dakota. R1759.
211. Self, J.R. and P.N. Soltanpour. 2010. Soil Sampling. Colorado State University Extension: Fort Collins, Colorado. Fact Sheet No. 0.500.
212. Shaver, Tim M. (Ed.). 2014. Nutrient Management for Agronomic Crops in Nebraska. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. EC155.
213. Shawver, Casey, Joe Brummer, Jim Ippolito, Jason Ahola, and Ryan Rhoades. 2020. Management-Intensive Grazing (MiG) and Soil Health. Colorado State University Extension: Fort Collins, Colorado. Fact Sheet 0.570.
214. Shelton, David P. 2012. Manure Incorporation and Crop Residue Cover—Part I: Reduction of Cover. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. G1563.
215. Shelton, David P. 2012. Manure Incorporation and Crop Residue Cover—Part II: Fine-Tuning the System. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. G1564.
216. Silveira, Maria, Ed Hanlon, Mariana Azenha, and Hiran M. da Silva. 2018. Carbon Sequestration in Grazing Land Ecosystems. University of Florida, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences: Gainesville, Florida. SL373.
217. Smith, David W., Saqib Mukhtar, and Richard R. Stowell. 2014. Advanced Application Techniques: Making the Most of Your Manure Responsibly. The Texas A&M University, Texas Cooperative Extension: College Station, Texas. EBN-007.
218. Snapp, Sieglinde S. and Dale R. Mutch. 2003. Cover Crop Choices for Michigan Vegetables. Michigan State University Extension: East Lansing, Michigan. E-2896.
219. Snapp, Sieglinde S. 2011. Advanced Soil Organic Matter Management. Michigan State University Extension: East Lansing, Michigan. E-3137.
220. Soil Science Society of America. 2013. Why is Soil Important? Soil Science Society of America: Washington, DC.
221. Sonon, Leticia S., Uttam Saha, and David E. Kissel. 2015. Soil Salinity: Testing, Data Interpretation and Recommendations. University of Georgia Extension: Athens, Georgia. Circular 1019.
222. Spargo, John, Tracy Allen, and Solomon Kariuki. 2013. Interpreting Your Soil Test Results. University of Massachusetts Extension: Amherst, Massachusetts.
223. Staben, M.L., J.W. Ellsworth, D.M. Sullivan, D. Horneck, B.D. Brown, and R.G. Stevens. 2006. Monitoring Soil Nutrients Using a Management Unit Approach. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. PNW 570-E.
224. Stevenson, F.J. and M.A. Cole. 1999. Cycles of Soil—Carbon, Nitrogen, Phosphorus, Sulfur, Micronutrients. 2nd ed. John Wiley and Sons: New York, New York.
225. Sulc, R. Mark. and Alan J. Franzluebbers. 2014. Exploring Integrated Crop–Livestock Systems in Different Ecoregions of the United States. Publications from USDA-ARS/UNL Faculty. 1476. Webpage accessed 2/20/2021 online at: https://digitalcommons.unl.edu/usdaarsfacpub/1476.
226. Sullivan, Preston. 2001. Assessing the Pasture Soil Resource. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana. IP128.
227. Sullivan, Preston. 2003. Overview of Cover Crops and Green Manures. Appropriate Technology Transfer for Rural Areas (ATTRA), National Center for Appropriate Technology (NCAT): Butte, Montana. IP024.
228. Sullivan, Preston. 2004. Sustainable Soil Management: Soil Systems Guide. Sustainable Agriculture Research and Education (SARE): College Park, Maryland. IP027, Version 062104.
229. Sullivan, D.M., E. Peachey, A.L. Heinrich, and L.J. Brewer. 2017. Nutrient Management for Sustainable Vegetable Cropping Systems in Western Oregon. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. EM 9165.
230. Sullivan, D.M., A.D. Moore, and L.J. Brewer. 2019. Soil Organic Matter as a Soil Health Indicator: Sampling, Testing, and Interpretation. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. EM 9251.
231. Sullivan, Dan M. 2020. Estimating Plant-available Nitrogen from Manure. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. EM 8954-E.
232. Taariq-Sidibe and others. 2020. Copper (Cu). Cornell University Cooperative Extension: Ithaca, New York. Fact Sheet 113.
233. Tisdale, S.L., W.L. Nelson, and J.D. Beaton. 1985. Soil Fertility and Fertilizers. 4th ed., Macmillan Publishing Co.: New York, New York.
234. Troeh, F.R., J.A. Hobbs, and R.L. Donahue. 1999. Soil and Water Conservation: Productivity and Environmental Protection. 3rd ed. Prentice Hall: Upper Saddle River, New Jersey.
235. UCSUSA. 2017. Rotating Crops, Turning Profits: How Diversified Farming Systems Can Help Farmers While Protecting Soil and Preventing Pollution. Union of Concerned Scientists (UCSUSA): Cambridge, Massecuites.
236. UNARDC. 2014. Physical, Chemical, and Biological Properties of Soil and Water. University of Nebraska Agricultural Research and Development Center (UNARDC): Mead, Nebraska.
237. USDA. 1974. Windbreaks for Conservation. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. Bulletin 339.
238. USDA. 1998. Soil Quality Resource Concerns: Soil Biodiversity. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. Soil Quality Information Sheet.
239. USDA. 1999. Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys. 2nd ed. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. Agriculture Handbook Number 436.
240. USDA. 2001. Rangeland Soil Quality—Soil Biota. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. Rangeland Sheet 8.
241. USDA. 2004. Soil Biology and Land Management. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. Soil Quality – Soil Biology Technical Note No. 4.
242. USDA. 2006. Erosion Control Treatment Selection Guide. United States Department of Agriculture (USDA), Forest Service: Washington, DC.
243. USDA. 2008. Soil Quality Indicators. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. 244. USDA. 2015. Virginia NRCS Cover Crop Planning Manual 1.0. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. Virginia Technical Note, Agronomy #10.
245. USDA. 2015. Illustrated Guide to Soil Taxonomy. Version 2. United States Department of Agriculture (USDA), Natural Resources Conservation Service, National Soil Survey Center: Lincoln, Nebraska.
246. USDA. 2016. Grain Drills and Planters. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. Technical Note No: TX-PM-16-03.
247. USDA. 2017. Soil Survey Manual. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. Agriculture Handbook Number 18.
248. USDA. 2016. Grazing Management and Soil Health: Keys to Better Soil, Plant, Animal, and Financial Health. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC.
249. USDA. 2022. Interseeding into Corn: Considerations for Interseeding Cover Crops into Corn at V4-V6. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC.
250. USDA. 2022. Climate Change and Agriculture in the United States: Effects and Adaptation. United States Department of Agriculture (USDA), Natural Resources Conservation Service: Washington, DC. Technical Bulletin 1935.
251. Várallyay, G. 2010. The Impact of Climate Change on Soils and on Their Water Management. Agronomy Research, 8.
252. Walworth, James. 2013. Nitrogen in Soil and the Environment. University of Arizona, College of Agriculture and Life Sciences, Cooperative Extension: Tucson, Arizona. AZ1591.
253. Wardle, Erik, Troy Bauder, and Calvin Pearson. 2015. Guidelines for Using Conservation Tillage Under Furrow Irrigation. 2nd ed. Colorado State University Extension: Fort Collins, Colorado. TR 15-10.
254. Warncke, Darryl, Laura Bast, and Don Christenson. 2010. Lime for Michigan Soils. Michigan State University Extension: East Lansing, Michigan. E-471.
255. Warren, Jason and Randy Taylor. 2017. Managing Soil Compaction. Oklahoma State University, Oklahoma Cooperative Extension Service: Stillwater, Oklahoma. PSS-2244.
256. Waskom, R.M., T. Bauder, J.G. Davis, and A.A. Andales. 2012. Diagnosing Saline and Sodic Soil Problems. Colorado State University Extension: Fort Collins, Colorado. Fact Sheet No. 0.521.
257. Watson, J. and T. Knowles. 1999. Leaching for Maintenance: Factors to Consider for Determining the Leaching Requirement for Crops. University of Arizona, College of Agriculture and Life Sciences, Cooperative Extension: Tucson, Arizona. AZ1107.
258. Weil, Ray R. and Nyle C. Brady. 2017. The Nature and Properties of Soils. 15th ed. Person Education Limited: Essex, England.
259. WFO. 2016. Nutrient Management Handbook. World Farmers’ Organisation (WFO): Rome, Italy.
260. White, Charles and Mary Barbercheck. 2012. Managing Soil Health: Concepts and Practices. The Pennsylvania State University, Penn State Extension: State College. EE0026.
261. Whitford, Fred and others. 2021. Anhydrous Ammonia: Understanding, Avoiding and Mediating Inherent Risks. Purdue University Cooperative Extension Service: West Lafayette, Indiana. PPP-140.
262. Wolf, Tony, Alson H. Smith Jr., and Gill Giese. 2020. Floor Management Strategies for Virginia Vineyards. Virginia Tech, Virginia State University, Virginia Cooperative Extension: Blacksburg, Virginia. Publication SPES-209.
263. Wolkowski, Richard and Birl Lowery. 2008. Soil Compaction: Causes, Concerns, and Cures. University of Wisconsin-Extension, Cooperative Extension: Madison, Wisconsin. A3367.
264. Woodward, Timothy, Mark Alley, W.G. Wysor, and Wade Thomason. 2020. Virginia No-Till Fact Sheet Series Number Two: Nitrogen Fertilizer Injection in No-Till Systems. Virginia Tech, Virginia State University, Virginia Cooperative Extension: Blacksburg, Virginia. 3011-1516 (SPES-265NP).
265. Wortmann, Charles S., Charles A. Sharpio, and Amy M. Schmidt. 2014. Manure Testing for Nutrient Content. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. G1450.
266. Wortmann, Charles S., Martha Mamo, and Charles A. Shapiro. 2015. Management Strategies to Reduce the Rate of Soil Acidification. University of Nebraska, Institute of Agriculture and Natural Resources, University of Nebraska Extension: Lincoln, Nebraska. G1503.
267. White, Charlie and Mary Barbercheck (Eds.). 2017. Managing Soil Health: Concepts and Practices. The Pennsylvania State University, Penn State Extension: State College, Pennsylvania.
268. Wszelaki, Annette. 2010. Crop Rotations. The University of Tennessee Extension, Institute of Agriculture: Knoxville, Tennessee. W235-E.
269. Wszelaki, Annette and Sarah Broughton. 2012. Cover Crops and Green Manures. The University of Tennessee Extension, Institute of Agriculture: Knoxville, Tennessee. W235-G.
270. Zaman, Mohammad, Shabbir A. Shahid, and Lee Heng. 2018. Guideline for Salinity Assessment, Mitigation and Adaptation Using Nuclear and Related Techniques. Springer: New York, New York.
271. Zamora Re, María, Abigail Tomasek, Bryan G. Hopkins, Dan Sullivan, and Linda Brewer. 2022. Managing Salt-Affected Soils for Crop Production. Oregon State University, Oregon State University Extension Service: Corvallis, Oregon. PNW 601.
272. Zhang, Hailin. 2017. Cause and Effects of Soil Acidity. Oklahoma State University, Oklahoma Cooperative Extension Service: Stillwater, Oklahoma. PSS-2239.