Education:

• Ph.D. 2001:-- Colorado State University, Fort Collins, CO. Environmental Soil Quality/Chemistry. Dissertation Title: Phosphorus adsorption/desorption of water treatment residuals and biosolids co-application effects.
• M.S. 1992:-- Colorado State University, Fort Collins, CO. Soil Chemistry/Fertility. Thesis Title: Determination of salinity threshold levels for selected grass and legume forage species.
• B.S. 1989:-- University of Delaware, Newark, DE. Plant Science - Agronomy. Minor: Microbiology.

Experience:

• 2007-present: Research Soil Scientist/Soil Chemist, USDA-ARS, Northwest Irrigation and Soils Research Laboratory, Kimberly, ID.
• 2002-2007: Assistant Professor, Environmental Soil Quality/Chemistry, Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO.
• 1991-2002: Research Associate, Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO.

Professional Societies and Activities:

• American Society of Agronomy
• Soil Science Society of America

• Soil Science Applied Research Award Committee, 2009-2010, American Society of Agronomy.
• Division A5 chair -- Environmental Quality, 2009, American Society of Agronomy. 
• Division A5 chair elect -- Environmental Quality, 2008, American Society of Agronomy.
• Graduate Student Research Poster Division A5 Symposium Contest Judge, 2009, American Society of Agronomy Meetings. Pittsburgh, PA.
• USDA-CSREES NRI Soil Processes Panelist, 2008. 
• Presiding Officer, A5 Oral Session, Effects of Manure and Biosolids on the Environment, 2007, American Society of Agronomy Meetings. New Orleans, LA.
• Undergraduate Research Poster Symposium Contest Judge, 2007, American Society of Agronomy Meetings. New Orleans, LA.
• Presiding Officer, S11 Oral Session, Phosphorus Availability and Mobility in Land Applied Wastes, 2006, American Society of Agronomy Meetings. Indianapolis, IN.
• Undergraduate Research Poster Symposium Contest Judge, 2006, American Society of Agronomy Meetings. Indianapolis, IN.
• Presiding Officer, A5 Oral Session, The Effects of Waste Constituents on Soil and Water, 2005 American Society of Agronomy Meetings. Salt Lake City, UT.
• Chair Soil Science Professional Service Award committee, November 2004 through November 2005. Soil Science Society of America.
• Soil Science Professional Service Award committee, November 2003 through November 2004. Soil Science Society of America.

Outstanding Achievements and Recognitions

• US EPA National Clean Water Act Recognition Award for Outstanding Biosolids Research, 2005.
• Rocky Mountain Water Environment Association State of Colorado Analytical Award of Merit, 2005.
• First place in the EPA 2003 Clean Water Act National Recognition Awards for Biosolids Exemplary Management for Operating Projects > 5 DMTD.
• Association of Metropolitan Sewerage Agencies National Environmental Achievement Award in Research & Technology, 2000.
• US EPA Wastewater Management Research Excellence Award, First Place, 1999.
• Rocky Mountain Water Environment Association - State of Colorado Biosolids Management Merit award, 1998.

Research

Expertise and Scientific Interests

• Nutrient biogeochemical cycling, primarily nitrogen and phosphorus.
• Soil trace and heavy metal mobility, transformations, and fate.
• Utilization of waste materials for beneficial reuse in agroecosystems, disturbed rangelands, mined land reclamation, burned areas.

Current Research Highlights

• Biochar effects on soil chemistry, fertility, microbiology, crop growth, and environmental quality.
• Biochar sorption of heavy metals: quantification and sorption mechanisms.
• The effect of dairy lagoon waste effluent on calcareous soil copper chemistry and crop growth. 
• Changes in soil phosphorus chemistry within irrigation systems.
• The effect of clinoptilolite (zeolite) on soil nitrogen dynamics, water holding capacity, and crop growth.
• Fate and transport of phosphorus in biosolids and alum-based water treatment residual amended soils under redox conditions.
• Phosphorus release from alum-based water treatment residuals-biosolids co-amended soils.

Recent Publications

Ippolito, J.A., K.A. Barbarick, and R.B. Brobst. 2009. Predicted trace metal chemistry and mineralogy in biosolids-amended semi-arid grassland soils. To be submitted to J. Environ. Qual.

Blecker, S.W., L.L. Stillings, M. Amacher, J.A. Ippolito, and N. DeCrappeo. 2009. The impact of mining and mineralized terrane on soil quality. Submitted to Soil Biol. Biochem.

Tarkalson, D.D., and J.A. Ippolito. 2009. Clinoptilolite zeolite influence on inorganic nitrogen in silt loam and sandy agricultural soils. Submitted to Agron. J.

Ippolito, J.A., T.F. Ducey, and D.D. Tarkalson. 2009. Impacts of copper on corn, soil chemistry, and the microbial community. Submitted to Agron. J.

Mamo, M., J. Ippolito, T. Kettler, R. Reuter, D. McCallister, P. Morner, D. Husmann, and E. Blankenship. 2009. Reinforcing concepts of soil genesis and development through e-lessons. Submitted to J. Geosci. Ed.

Ippolito, J.A., K.A. Barbarick, and H.A. Elliott. 2009. Drinking water treatment residuals: A critical review of environmental responses and alternative uses. Submitted to J. Environ. Qual.

Ippolito, J.A., K.A. Barbarick, M.W. Paschke, and R.B. Brobst. 2009. Composted biosolids applications effect semi-arid grassland soils and plants. Submitted to J. Environ. Manage.

Geiss, C., M. Mamo, T. Kettler, J. Ippolito, R. Reuter, D. McCallister, W. Zanner, P. Morner, and J. Soester. 2009. Online Soil Science Lessons: Rocks and Minerals. http://plantandsoil.unl.edu/croptechnology2005/soil_sci/In review with J. Nat. Res. Life Sci. Ed.

Mamo, M., T. Kettler, J. Ippolito, R. Reuter, D. McCallister, W. Zanner, C. Geiss, P. Morner, and J. Soester. 2009. Online Soil Science Lessons: Processes of Weathering. http://plantandsoil.unl.edu/croptechnology2005/soil_sci/In review with J. Nat. Res. Life Sci. Ed.

Ippolito, J., M. Mamo, T. Kettler, R. Reuter, D. McCallister, W. Zanner, C. Geiss, P. Morner, and J. Soester. 2009. Online Soil Science Lessons: Soil Forming Factors. http://plantandsoil.unl.edu/croptechnology2005/soil_sci/In review with J. Nat. Res. Life Sci. Ed.

Reuter, R., M. Mamo, T. Kettler, J. Ippolito, D. McCallister, W. Zanner, C. Geiss, P. Morner, and J. Soester. 2009. Online Soil Science Lessons: Soil Profile Development. http://plantandsoil.unl.edu/croptechnology2005/soil_sci/In review with J. Nat. Res. Life Sci. Ed.

Zanner, W., T. Kettler, M. Mamo, J. Ippolito, R. Reuter, D. McCallister, C. Geiss, P. Morner, and J. Soester. 2009. Online Soil Science Lessons: Soil Geography and Classification. http://plantandsoil.unl.edu/croptechnology2005/soil_sci/In review with J. Nat. Res. Life Sci. Ed.

Kettler, T., M. Mamo, J. Ippolito, R. Reuter, D. McCallister, W. Zanner, C. Geiss, P. Morner, and J. Soester. 2009. Online Soil Science Lessons: Soil Global Resources and Distribution. http://plantandsoil.unl.edu/croptechnology2005/soil_sci/In review with J. Nat. Res. Life Sci. Ed.

Massey, M.S., J.A. Ippolito, J.G. Davis, and R.E. Sheffield. 2009. Macroscopic and microscopic variations in recovered magnesium phosphate materials: Implications for phosphorus removal processes and product re-use. Accepted for publication in Bioresource Technol.

Ippolito, J.A., S.W. Blecker, E.F. Kelly, and C.L. Freeman. 2009. Controls of Phosphorus fractions across a Great Plains bioclimosequence. Accepted for publication in J. Arid Environ. 

Ippolito, J.A., K.A. Barbarick, M.E. Stromberger, M.W. Paschke, and R.B. Brobst. 2009. Water treatment residuals and biosolids long-term co-applications effects to semi-arid grassland soils and vegetation. Accepted for publication in Soil Sci. Soc. Am. J.

Ippolito, J.A. K.G. Scheckel, and K.A. Barbarick. 2009. Selenium adsorption to aluminum-based water treatment residuals. J. Colloid Interf. Sci. 338:48-55.

Ippolito, J.A., K.A. Barbarick, and R.B. Brobst. 2009. Fate of biosolids Cu and Zn in a semi-arid grassland. Agric., Ecosys., Environ. 131:325-332.

Massey, M., J. Davis, J. Ippolito, and R. Sheffield. 2009. Effectiveness of recovered magnesium phosphates as fertilizers in neutral and slightly alkaline soils. Agron. J. 101:323-329. 

Barbarick, K.A., and J.A. Ippolito. 2009. Continuous biosolids application affects wheat grain elemental concentrations in a dryland-wheat agroecosystem. Agric., Ecosys., Environ. 129:340-343.

Ippolito, J.A., and K.A. Barbarick. 2008. Fate of biosolids trace metals in a dryland wheat agroecosystem. J. Environ. Qual. 37:2135-2144. 

Bayley, R.M., J.A. Ippolito, M.E. Stromberger, K.A. Barbarick, and M.W. Paschke. 2008. Water treatment residuals and biosolids co-applications affect the activity of phosphatases in a semi-arid rangeland soil. Commun. Soil Sci. Plant Anal. 39:2812-2826.

Bayley, R.M., J.A. Ippolito, M.E. Stromberger, K.A. Barbarick, and M.W. Paschke. 2008. Co-applications of water treatment residuals and biosolids affect semi-arid rangeland phosphorus cycling. Soil Sci. Soc. Am. J. 72:711-719.

Barbarick, K.A., and J.A. Ippolito. 2008. Predicting soil-extractable zinc, phosphorus, copper, and iron in a biosolids-amended dryland-wheat agroecosystem. Soil Sci. 173:175-185

Blecker, S.W., S.L. King, L.A. Derry, O.A. Chadwick, J.A. Ippolito, and E.F. Kelly. 2007. The ratio of germanium to silicon in plant phytoliths: Quantification of biological fractionation under controlled experimental conditions. Biogeochemistry. 86:189-199.

K.A. Barbarick, and Ippolito, J.A.. 2007. Dryland wheat nutrient assessment for 12 years of biosolids applications. Agron. J. 99:715-722.

Ippolito, J.A., K.A. Barbarick, and K.L. Norvell. 2007. Biosolids impact soil phosphorus recovery, fractionation, and potential environmental risk. J. Environ. Qual. 36:764-772. Ippolito, J.A., and K.A. Barbarick. 2006. Biosolids affect soil Ba in a dryland wheat agroecosystem. J. Environ. Qual. 35:2333-2341.

Barbarick, K.A., K.G. Doxtader, and J.A. Ippolito. 2006. Laboratory Manual for Introductory Soil Science. Ninth Edition. Pearson Custom Publishing. Boston, MA.

Blecker, S.W., J.A. Ippolito, J.E. Barrett, D.H. Wall, R.A. Virginia, and K.L. Norvell. 2006. Phosphorus fractionation implications in soils of Taylor Valley, Antarctica. Soil Sci. Soc. Am. J. 70:806-815.

Ippolito, J.A., and K.A. Barbarick. 2006. Phosphorus Extraction Methods from Water Treatment Residual-Amended Soil. Comm. Soil Sci. Plant Anal. 37:859-870.

Ghasemi-Fasaei, R., M. Maftoun, A. Ronaghi, N. Karimian, J. Yasrebi, M.T Assad, and J. Ippolito. 2006. Kinetics of Copper Desorption from Highly Calcareous Soils. Comm. Soil Sci. Plant Anal. 37:797-809.

Updated September 2009