J. Larry Oldham

Extension Professor

Specialty: Soil Health

Mailing Address:

Box 9555
Mississippi State, MS

Physical Address:

465 Dorman Hall
Mississippi State, MS


Phone: (662) 325-2760




  • Ph.D., University of Minnesota
  • M.S., University of Kentucky
  • B.S., Western Kentucky University

Society Memberships:

  • American Society of Agronomy (A04 Extension Education)
  • Association of Natural Resource Education Professionals
  • Ecological Society of America (Soil Ecology)
  • Mississippi Chapter of American Society of Agronomy
  • Mississippi Cattlemen’s Association
  • Mississippi Agricultural Industrial Council
  • Mississippi Association of County Agricultural Agents
  • Soil Science Society of America (S04 Soil Fertility, S06 Soil Management and Conservation, S11 Soils and Environmental Quality)
  • Soil and Water Conservation Society
  • MS SWCS Chapter


  • Certified Crop Adviser, Number 20965
  • Certified Professional Soil Scientist
  • Institutional Review Board for the Protection of Human Subjects in Research


  • National Communications Award Winner, Bound Book Category, National Association of County Agricultural Agents, for Nutrient Management Guidelines for Agronomic Crops Grown in Mississippi


Read, J. J., A. Adeli, D. J. Lang, J. L. Oldham. 2017. Nutritive value and nutrient uptake of summer-active and summer-dormant tall fescue under different broiler litter rates. Agronomy Journal 109:473-482. Download
Miller, R. and J.L Oldham. 2014. Introduction to Soil Extractable Plant Nutrients. Chapter 4.1 in Soil Test Methods From the Southeastern United States, F.J. Sikora and K.P. Moore (Ed.), Southern Cooperative Series Bulletin No. 419: 91-94. Download
Oldham, J.L. 2014. Lancaster. Chapter 4.4 in Soil Test Methods From the Southeastern United States, F.J. Sikora and K.P. Moore (Ed.), Southern Cooperative Series Bulletin No. 419: 111-117. Download
Sikora, F.J. K.K. Crouse, S. Heckendorn, G. Huluka, C.C. Mitchell, K.P. Moore, and J.L. Oldham. 2014. Cation Exchange Capacity. Chapter 6.2 in Soil Test Methods From the Southeastern United States, F.J. Sikora and K.P. Moore (Ed.), Southern Cooperative Series Bulletin No. 419: 170-179. Download
Osmond, D.L., A. Sharpley, C.H. Bolster, M.L. Cabrera, S.E. Feagley, B. Lee, C. Mitchell, R.S. Mylavarapu, J.L. Oldham, F.R. Walker, H. Zhang. 2012. Comparing phosphorus indices from twelve wouthern U.S. states against monitored phosphorus loads from six prior Southern studies. Journal of Environmental Quality 41(6):1741-1749. Download
Read, J.J., K.R. Sistani, J.L. Oldham, G. Brink. 2009. Double-cropping annual ryegrass and Bermudagrass to reduce phosphorus levels in soil with history of poultry litter application. Nutrient Cycling in Agroecosystems 84(1):93-104. Download
Brink, G., K.R. Sistani, J.L. Oldham, W.L. Kingery, B.B. Johnson. 2008. Broiler litter application rate effects on bermudagrass nutrient uptake and phosphorus level of soils differing in application history. Journal of Sustainable Agriculture 31(4):79-94. Download
Sistani, K.R., G. Brink, J.L. Oldham. 2008. Managing broiler litter application rate and grazing to decrease watershed runoff losses. Journal of Environmental Quality 37(2):718-724. Download
Oldham, J.L. 2007. Planning and performing multiple location tours for maximum benefit and impact. Journal of Extension 45:2., Article No. 2TOT6. Download
Oldham, J.L. 2007. Understanding the different phosphorus indices in nutrient management planning. Journal of Extension 45(1), Article 1TOT6. Download
Walker, T.W., W.L. Kingery, J.E. Street, M.S. Cox, P.D. Gerard, J.L. Oldham. 2007. Soil chemical properties and rice yield response to nitrogen rate and timing after precision leveling. Crop Management. Download
Brink, G., K.R. Sistani, J.L. Oldham, G.A. Pederson. 2006. Maturity effects on mineral concentration and uptake in annual ryegrass. Journal of Plant Nutrition 29(6):1143-1155. Download
Osmond, D.L., M.L. Cabrera, S.E. Feagley, G.E. Hardee, C.C. Mitchell, P.A. Moore Jr., R.S. Mylavarapu, J.L. Oldham, J.C. Stevens, W.O. Thorn, F. Walker, H. Zhang. 2006. Comparing ratings of the southern phosphorus indices. Journal of Soil and Water Conservation 61(6):325-337. Download
Read, J.J., G. Brink, J.L. Oldham, W.L. Kingery, and K.R. Sistani. 2006. Effects of broiler litter and nitrogen fertilization on uptake of major nutrients by coastal bermudagrass. Agronomy Journal 98(4):1065-1072. Download