Soil Fertility

Lime and Soil pH

• Extension Publications
• Newsletter Articles
• Conference Proceedings and Reports
• Photo Gallery
• Presentations

Extension Publications (pdf)

• PM 1688 A General Guide for Crop Nutrient and Limestone Recommendations in Iowa
• ST 8 Soil Sample Information Sheet
• ST 11 Soil Sample Information Sheet for horticulture crops

Newsletter Articles

• Ag lime impact on yield in several tillage systems (9/1999)
• Effective use of precision agriculture for improved management of phosphorus, potassium and lime (5/1999)

Conference Proceedings and Reports

• Holmes, J.D., J.E. Sawyer, P. Kassel, and D. Ruiz Diaz. 2011. Using ground eggshells as a liming material in corn and soybean production. Online. Crop Management doi:10.1094/CM-2011-1129-01-RS.
• Mallarino, A.P., A. Pagani, and J.E. Sawyer. 2011. Corn and soybean response to soil pH level and liming. p.93-102. In Proc. 23nd Annual Integrated Crop Manag. Conf., Ames, IA. 29 Nov.-1 Dec. 2011. Iowa State Univ., Ames, IA. (pdf)
• Pagani, A., A.P. Mallarino, and J.E. Sawyer. 2009. Soil pH and lime management for corn and soybean: an ongoing on-farm project. p. 106-112. In Proc. Thirty-Ninth North Central Extension-Industry Soil Fertility Conf., Des Moines, IA. 18-19 Nov. 2009. Vol. 25. International Plant Nutrition Inst., Brookings, SD. (pdf)
• Hill, B.E., A.P. Mallarino, and A. Pagani. 2009. Buffer pH methods: ongoing Iowa laboratory and field studies. p. 20-27. In Proc. 19th Soil/Plant Analysis Workshop, Bettendorf, IA. 24-25 Feb. 2009. NCERA-13. (pdf)
• Holmes, J., and P. Kassel. 2006. Can ground eggshells be used as a liming source? p. 235-238. In Proc. 18th Annual Integrated Crop Manag. Conf., Ames, IA. 29-30 Nov. 2006. Iowa State Univ., Ames, IA. (pdf)
• Kassel, P. 2004. Lime and tillage research project. ISRF04-29, 31 Annual Progress Report, Northwest Research and Demonstration Farm, Iowa State University.
• Kassel, P. 2002. Lime and tillage research project. ISRF02-29, 31 Annual Progress Report, Northwest Research and Demonstration Farm, Iowa State University. (pdf)
• Kassel, P., J.E. Sawyer, D. Haden, D. Barker. 2000. Soil pH and corn-soybean rotation yield responses to limestone application and tillage. p. 193. In Proc. Thirtieth North Central Extension-Industry Soil Fertility Conf., St. Louis, MO. 15-16 Nov. Potash and Phosphate Inst., Brookings, SD. (pdf)
• Kassel, P. 1999. Lime and tillage research report. p. 17-18. ISRF99-29,31 Annual Progress Report, Northwest Research and Demonstration Farm, Iowa State Universtiy. (pdf)
• Sawyer, J.E. 1999. Making every fertilizer dollar pay. p. 63-78. In Proc. Integrated Crop Manag. Conf., Ames, IA. 1-2 Dec. Iowa State Univ., Ames, IA. (pdf)
• Sawyer, J.E. 1998. Managing crop nutrients and limestone with reduced financial resources. p. 33-36. In Proc. Integrated Crop Manag. Conf., Ames, IA. 17-18 Nov. Iowa State Univ., Ames, IA.

Presentations

• Soil pH and liming (pdf). 2004 Soil Fertility and Nutrient Management Short Course, Iowa State Univ.

Links

• ISU Research and Demonstration Farms Annual Progress Report