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CFaculty & Staff Soil Scientists
John B. Peters
Director, UW Soil Testing Labs
B.S. Soil Science, 1976, UW-Stevens Point
M.S. Soil Science, 1978, UW-Madison
2611 East 29th St.
Marshfield, WI 54449
jbpeter1@wisc.edu
(office) 715.387.2523 - (fax) 715.387.1723

I serve as Director of the two UW soil-testing laboratories and as a statewide Extension Specialist for issues related to diagnostic services for soil, plant, forage and manure samples. Some of my other responsibilities include developing and refining new laboratory procedures as well as coordinating the Wisconsin soil testing laboratory certification program. I am also involved in extension activities on topics related to soil fertility and plant nutrition, manure sampling and testing, liming, and field application of manure and by-product materials. My research focus is soil fertility and waste disposal issues, particularly as they relate to soil test calibration, liming and nutrient management strategies.

I have also been very active in international agricultural programs including two year terms with USAID funded projects in The Gambia, West Africa (1990-92) and India (2009-2010). The focus of these projects has been establishing basic soil testing laboratories to provide essential information for farmers to make profitable and sustainable management decisions.

Recent Publications

Peters, J. B. 2011. "Selling Tractors and Soil Testing in India." Proceedings of the 2011 Wisconsin Fertilizer, Aglime and Pest Management Conference. Vol. 50, p.167-171. Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

Peters, J. B. 2010. "Wisconsin Soil Test Summary: 2005-2009." New Horizons in Soil Science, No. 3-2010, Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

Peters, J. B. 2010. "Manure Analysis Update: 1998-2010." New Horizons in Soil Science, No. 4-2010, Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

Peters, J. B. 2010. "Soil and Water Testing Laboratory Testing and Training Manual." Mahindra and Mahindra Tractor Company, Mumbai, India. With support provided by USAID and the University of Wisconsin-Madison, Madison, WI.

Peters, J. B., editor. Revised in 2008. "Wisconsin Procedures for Soil Testing, Plant Analysis and Feed & Forage Analysis." Soil Science Department, College of Agriculture and Life Sciences, University of Wisconsin-Extension, Madison, WI. http://uwlab.soils.wisc.edu/procedures.htm

Peters, J. B. 2008. "Whats New with Manure: Long Term Trends." New Horizons in Soil Science, No. 1-2008, Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

Peters, J. B. 2008. "Sulfur Deficiencies in Wisconsin." Proceedings of the 2008 Wisconsin Fertilizer, Aglime and Pest Management Conference. Vol. 47, p.22-30. Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

Peters, J. B., C. A. M. Laboski, and L. G. Bundy. Revised in 2007. "Sampling Soils for Testing." University of Wisconsin - Extension Publication A2100. University of Wisconsin-Madison, Madison, WI.

Peters, J. B., and C. A. M. Laboski. 2007. "Garden Fertilization." University of Wisconsin – Extension Publication A2304. University of Wisconsin-Madison, Madison, WI.

Peters, J. B., and D. J. Soldat. 2007. "Sampling Garden Soils and Turf Areas for Testing." University of Wisconsin – Extension Publication A2166. University of Wisconsin-Madison, Madison, WI.

Peters, J. B., 2007. "Getting Full Value From Tissue Testing." Proceedings of the 2007 Wisconsin Fertilizer, Aglime and Pest Management Conference. p.140-146.

Peters, J. B., editor. Revised in 2007. "Wisconsin Procedures for Soil Testing, Plant Analysis and Feed & Forage Analysis." Soil Science Department, College of Agriculture and Life Sciences, University of Wisconsin-Extension-Madison. http://uwlab.soils.wisc.edu/procedures.htm

Laboski, C. A. M., J. B. Peters and L. G. Bundy. 2006. "Nutrient Application Guidelines for Field, Vegetable and Fruit Crops." University of Wisconsin- Extension Publication A2809. University of Wisconsin-Madison, Madison, WI.

Peters, J. B., and C. A. M. Laboski. 2006. "Allocating Limited Dollars for Lime." Proceedings of the 2006 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 206-210.

Peters, J. B., K. A. Kelling, P. E. Speth and S. M. Offer. 2005. "Alfalfa Yield and Nutrient Uptake as Affected by pH and Applied K." Communications in Soil Science and Plant Analysis. Vol. 36: 583-596.

Peters, J. B., P. E. Speth, K. A. Kelling, and R. Borges. 2005. "Effect of Soil pH on Soybean Yield." Proceedings of the 2005 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 134-138.

Peters, J. B. 2005. "Wisconsin Soil Test Summary: 2000-2004." New Horizons in Soil Science, No. 1-2005, Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

Peters, J. B., editor. Revisions in 2005. "Wisconsin Procedures for Soil Testing, Plant Analysis and Feed & Forage Analysis." Soil Science Department, College of Agriculture and Life Sciences, University of Wisconsin-Extension- Madison. http://uwlab.soils.wisc.edu/procedures.htm

Peters, J. B. 2005 Research Report: "Land Application of Stora Enso Papers’ Consogro Sludge to Agricultural Land." Vegetable field crop rotation study. Earlier editions published in 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1991, and 1989.

Schulte, E. E., L. M. Walsh, K. A. Kelling, L. G. Bundy, W. L. Bland, R. P. Wolkowski, J. B. Peters, and S. J. Sturgul. 2005. "Management of Wisconsin Soils." Publication A3588. Cooperative Extension Publishing, University of Wisconsin-Extension, Madison, WI.

Peters, J. B., and S. M. Offer. 2004. "Crop and Soil Responses to Fibrous Paper Mill Sludge." Proceedings of the 2004 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 359-365.

Peters, J. B. 2004. "Trends in Feed and Manure Phosphorus." New Horizons in Soil Science, No. 3-2004, Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

Peters, J. B., K. A. Kelling, and D. J. Undersander. 2004. "Evaluation of Several Alfalfa Varieties for Low Soil pH Tolerance." Proceedings of the 6th International Symposium on Plant-Soil Interactions at Low Soil pH. Sendai, Japan.

Kelling, K. A. and J. B. Peters. 2004. "The Advisability of Using Cation Balance as a Basis for Fertilizer Recommendations." Proceedings of the 2004 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 366-371.

Kelling, K. A. M. Myers and J. B. Peters. 2004. "What Ignoring Lime Can do to Corn and Soybeans." Proceedings of the 2004 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 411-414.

Peters, J. B. 2004 Research Report: "Land Application of Stora Enso Papers' Water Renewal Center Sludge to Agricultural Land Sludge to Agricultural Land". N mineralization field study.

Peters, J. B., editor. "Recommended Methods of Manure Analysis." Feb. 2003. UW Ext. Publication A3769 (web based), Cooperative Extension Publishing Operations, Madison, WI. http://uwlab.soils.wisc.edu/pubs/A3769.pdf

Peters, J. B., K. A. Kelling, P. E. Speth and S. M. Offer. 2003. "Alfalfa Yield and Nutrient Uptake as Affected by pH and Applied K." Proceedings of the 2003 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 323-332.

Peters, J. B., K. A. Kelling, and S. M. Offer. 2003. "Minerals in Forages: Plant Considerations." Proceedings of the Four-State Forage Conference. MWPS-4SD15, Midwest Plan Service, Iowa State University. p. 31-36.

Kelling, K. A., J. B. Peters and P. E. Speth. 2003. "Effect of Soil pH and Alfalfa Stand Density on Alfalfa Nitrogen Credits." Proceedings of the 2003 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 333-341.

Peters, J. B., and K. A. Kelling. 2002. "Thirty-Year Trends of Wisconsin Aglime Use." Proceedings of the 2002 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 314-320.

Peters, J. B., K. A. Kelling, P. E. Speth and P. M. Laskowski. 2001. "Forage Cations as Affected by Soil pH and Topdressed K." Proceedings of the 2001 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 315-324.

Peters, J. B. 2000. "Gambian Soil Fertility Trends, 1991-1998." Communications in Soil Science and Plant Analysis. Vol. 31, (11-14):2201-2210.

Peters, J. B., K. A. Kelling and P. E. Speth. 2000. "Alfalfa Response to K at Various Soil pH Levels." Proceedings of the 2000 Wisconsin Fertilizer, Aglime and Pest Management Conference. p. 397-404.

Powell, J. M. and J. B. Peters. 2000. "Phosphorus Feeding Strategies for Dairy: Effects on Manure P and P Cycles." New Horizons in Soil Science, No. 3-2000, Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

Combs, S. M. and J. B. Peters. 2000. "Wisconsin Soil Test Summary: 1995-1999." New Horizons in Soil Science, No. 8-2000, Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

Schulte, E. E., K. A. Kelling, J. B. Peters and S. M. Combs. 2000. "Plant Analysis Interpretations Used in the Revised Wisconsin Program." New Horizons in Soil Science, No. 7-2000, Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

K. A. Kelling, S. M. Combs and J. B. Peters. 2000. "Using Plant Analysis as a Diagnostic Tool." New Horizons in Soil Science, No. 6-2000, Department of Soil Science, University of Wisconsin-Madison, Madison, WI.

**Cooperated on numerous other University of Wisconsin College of Agricultural and Life Sciences research and extension publications.

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