Jason P. de Koff
Extension Assistant Professor
Department of Agricultural and Environmental Sciences
College of Agriculture, Human and Natural Sciences
Office Location: 202K Farrell-Westbrook
Biofuel crop production, sustainable agriculture, soil chemistry
de Koff, J.P., P.A. Moore, Jr., D.H. Pote, S.J. Formica, M. Van Epps, and P.B. DeLaune. 2011. Effects of
pasture renovation on hydrology, nutrient runoff, and forage yield. J. Environ. Qual. (In press).
de Koff, J.P., B.D. Lee, S.A. Quideau, and S.-W. Oh. Assessment of potential compost maturity indices for
a high salt/high pH compost. (In review).
de Koff, J.P., P.A. Moore, Jr., R.D. Williams, R. Young, and P.J.A. Kleinman. Utilizing water treatment
residuals to reduce phosphorus runoff from biosolids. (In preparation).
de Koff, J.P., B.D. Lee, R.S. Dungan, and J.B. Santini. 2010. Effect of compost-, sand-,
or gypsum-amended waste foundry green sands on turfgrass yield and nutrient content. J. Environ. Qual. 39:375-383.
de Koff, J.P., B.D. Lee, and R.S. Dungan. 2008. Amelioration of physical strength in
waste foundry green sands for reuse as a soil amendment. J. Environ. Qual. 37:2332-2338.
de Koff, J., M.A. Anderson, and C. Amrhein. 2008. Geochemistry of iron in the Salton
Sea, California. Hydrobiologia604:111-121.
Dungan, R.S., B.D. Lee, P. Shouse, and J.P. de Koff. 2007. Saturated hydraulic
conductivity of soils blended with waste foundry sands. Soil Science
de Koff, J.P., R.C. Graham, K.R. Hubbert, and P.M. Wohlgemuth. 2006. Pre- and post-
fire erosion of soil nutrients within a chaparral watershed. Soil Science
AGSC 5110 – Research Methods
SWSC 100 – Introduction to Soil Science Laboratory
ENSC 2204 – Soil Science
Assist producers in biofuel crop production
Lead seminars and workshops for Extension agents and producers related to biofuel crops
de Koff, J.P., P.A. Moore, Jr., R.D. Williams. 2011. Treating biosolids with water
treatment residuals (WTRs) for surface-applications in agriculture. (In preparation).
de Koff, J.P., B.D. Lee, and M.V. Mickelbart. 2008. Household composting:
composting with worms. Purdue University Cooperative Extension Service. HENV-104-W.
de Koff, J.P., B.D. Lee, and A.P. Schwab. 2007. Avoiding arsenic exposure from
treated lumber around the home. Purdue University Cooperative Extension
de Koff, J.P., B.D. Lee, and A.P. Schwab. 2007. Protecting your family from lead
in the home. Purdue University Cooperative Extension Service. HENV-101-W.
de Koff, J.P., B.D. Lee, and P.L. Ziemer. 2007. Radon: how to assess the risks
and protect your home. Purdue University Cooperative Extension Service.
de Koff, J.P., B.D. Lee, and M.V. Mickelbart. 2007. Household composting:
methods and uses for compost. Purdue University Cooperative Extension Service. HENV-103-W.
B.Sc (Chemistry) – Ithaca College
M.Sc (Soil and Water Science) – UC Riverside
Ph.D. (Agronomy) – Purdue University
Date joined staff: 2010