Phillip Barak

Phillip Barak PhD, Soil Science, 1988 Hebrew University of Jerusalem Associate Professor Department of Soil Science University of Wisconsin-Madison 1525 Observatory Dr., Madison, WI 53706-1299 Interim Assistant Dean (Oct 2006 - May 2007) Undergraduate Programs & Services College of Agricultural and Life Sciences University of Wisconsin-Madison Tel: 608 263-5450 Fax: 608 265-2595 e-mail: pwbarak@wisc.edu

Of current interest:

Struvite crystallization on Langmuir monolayers, self-assembled monolayers, and cation exchange membranes as a means to recover and recycle phosphorus from wastewater (municipal sewage and agricultural manure) as a high-value fertilizer material (US Patent No. 7,182,872; issued 27 Feb 2007.)

M.L. Jackson's Soil Chemical Analysis: Advanced Course has been rekeyed from the last (1985) edition and reprinted, with a new introduction and commemorative material. See GoogleBookSearch for sample pages and here for ordering information.

Experiments with ICE's Polyhedral Model Kit, remanufacturing connectors for more precise assembly of aluminosilicates.

ScientificAmerican.com selected The Virtual Museum of Minerals and Molecules as a WINNER of the 2003 Sci/Tech Web Awards. "Each year, our editors review over a thousand web sites and select the 50 they deem the most innovative, creative and valuable as science and technology resources for our readers. This year your web site has been selected as one of the best of its kind."

College press release, "Acid Linked To Soil Aging", 3 Mar 1999

EDUCAUSE/ASA Medal Award, 26 Oct 1999

Research interests:

Soil chemistry of plant nutrients, plant nutrition, and scientific visualization. Ongoing projects:

• Modelling, measurement, and prediction of agricultural liming on millimeter scale, using ion-specific microelectrodes, diffusion cells, and irreversible thermodynamics.
• Evaluation of soil chemical changes as a result of long-term fertility management practices, such as exchangeable base cations, exchangeable acidity, and cation exchangeability, and their reversibility.
• Effect of cultivar and soil treatments on calcium uptake by snapbeans, in order to enhance calcium uptake by humans.
• Investigation into the interaction in the uptake of sulfur and selenium by Allium, as part of evaluating the phytopharmaceutical potential of organo-S and organo-Se compounds.
• Evaluation of wild potato germplasm for efficiency and preference in nitrate/ammonium uptake.
• Iron nutrition of plants--evaluation of iron chelates, their chemistry, and effectiveness in ameliorating iron deficiencies.

Recent publications:

• Lepore, B.J., and P. Barak. 200x. A colorimetric microwell method for determining bromide concentrations. Soil Sci Soc. Am. J. (in review)
• Barak, P., M.E. Tabanpour, M. Avila-Segura, J.M. Meyer. 2007. Struvite Crystallization. US Patent No. 7,182,872; rights assigned to WARF.)
• Barak, P., and E.A. Nater. 2005. The Virtual Museum of Minerals and Molecules: Molecular visualization in a virtual hands-on museum. J. Nat. Resour. Life Sci. Educ. 34:67-71. [html]
• Avila-Segura, M., J.W. Lyne, J.M. Meyer, and P. Barak. 2004. Rapid spectrophotometric analysis of soil phosphorus with a microplate reader. Comm. Soil Sci. Pl. Anal. 35:547–557.
• Grunwald, S., and P. Barak. 2003. 3D geographic reconstruction and visualization techniques applied to land resource management. Trans. GIS 7(2):231-241.
• Grunwald, S., and P. Barak. 2002. The use of VRML for virtual soil landscape modeling. System Analysis Modelling Simulation (SAMS) 41:755-776.
• Grunwald S., P. Barak, and D.J. Rooney. 2001. Web-based virtual models for the earth science community. ASAE International Meeting in Sacramento, CA, July 29-August 1, 2001; Paper No. 013029. (pdf)
• Orvis, K.S., I.L. Goldman, and P. Barak. 2001. Excess sulfate supply and onion-induced human antiplatelet activity. J. Plant Nutr. Soil Sci. 164:457-462
• Grunwald, S., and P. Barak. 2001. Virtual reality modeling in earth sciences. p. 216-221. In: C. Landauer and K.L. Bellman. (ed.) The Proceedings of the International Conference on Simulation and Multimedia in Engineering Education & Virtual Worlds and Simulation. Soc. Modeling and Simulation International, San Diego, CA. [ISBN:1-56555-224-5; Western MultiConference on Computer Simulation. Phoenix, AZ, 7-11 Jan 2001] (illustrations at http://www.soils.wisc.edu/~barak/wmc2001/).
• Sherman, L.A., and P. Barak. 2000. The solubility and dissolution kinetics of dolomite [CaMg(CO₃)₂] in Ca-Mg-HCO₃/CO₃ solutions at 25°C and 0.1 MPa carbon dioxide. Soil Sci. Soc. Am. J. 64:1959-1968.
• Grunwald, S., P. Barak, K. McSweeney, and B. Lowery. 2000. Soil landscape models at different scales portrayed in Virtual Reality Modeling Language (VRML). Soil Sci. 165:598-615. (illustrations at http://www.soils.wisc.edu/soils/3D_SL_models/3Dsoils.html)
• Mafongoya, P.L., P. Barak, J.D. Reed. 2000. Carbon, nitrogen and phosphorus mineralization of tree leaves and manure. Biol. Fert. Soils 30:298-305.
• Starr, G.C., P. Barak, B. Lowery, and M. Avila-Segura. 2000. Soil particle concentrations and size analysis using a dielectric method. Soil Sci. Soc. Am. J. 64:858-866.
• Barak, P., B.O. Jobe, A. Krueger, L.A. Peterson, and D.A. Laird. 1997. Effects of long-term soil acidification due to agricultural inputs in Wisconsin. Plant and Soil197:61-69.
• Hernández-Apaolaza, L., P. Barak, and J.J. Lucena. 1997. Chromatographic determination of commercial Fe(III)-chelates of EDTA, EDDHA and EDDHMA. J. Chromatogr. A 789:453-460.
• Barak, P., and I.L. Goldman. 1997. Antagonistic relationship between selenate and sulfate uptake in onion (Allium cepa): Implications for the production of organosulfur and organoselenium compounds in plants. J. Agric. Food Chem. 45:1290-1294.
• Miglioranza, E., P. Barak, K. Kmiecik, and J. Nienhuis. 1997. Comparison of soil and genotypic effects on calcium content of snap bean pods. HortScience 32:68-70.
• Liu, Y.-J., D.A. Laird, and P. Barak. 1997. Release and fixation of NH₄ and K under long-term fertility management. Soil Sci. Soc. Am. J. 60:310-314.
• Cihacek, L.J., W.L. Anderson, and P. Barak. 1996. Linkages between soil quality and plant, animal and human health. p. 9-23. In J.W. Doran and A.J. Jones (ed.) Methods for Assessment of Soil Quality. SSSA Spec. Publ. No. 49, Madison, WI.
• Barak, P., C.A. Seybold, and K. McSweeney. 1996. Self-similitude and fractal dimension of sand grains by computer-assisted image analysis. Soil Sci. Soc. Am. J. 60:72-76.
• Barak, P., L.A. Sherman, and B.O. Jobe. 1996. Comments on "Design and construction of a personal-computer-based automatic titrator". Soil Sci. Soc. Am. J. 60:630.
• Barak, P., Smith, J.D., Krueger, A.R., and Peterson, L.A. 1996. Measurement of Short-Term Nutrient Uptake Rates in Cranberry by Aeroponics. Plant, Cell, and Environ. 19:237-242.
• Lucena, J.J., P. Barak, and L. Hernández-Apaolaza. 1996. Isocratic ion-pair high-performance liquid chromatographic method for the determination of various iron(III) chelates. J. Chrom. A.727:253-264.
• Barak, P. 1995. Smoothing and Differentiation by an Adaptive-Degree Polynomial Filter. Anal. Chem. 67:2758-2762
• Barak, P., and P.A. Helmke. 1993. "The chemistry of zinc" pp. 1-13. in: A. Robson (ed.) Zinc in Soils and Plant. Proc., Internat. Symp. on "Zinc in Soils and Plants", Perth, Australia. Kluewer Acad. Press, Dordrecht.
• Welhouse, G., P. Barak, and W.F. Bleam. 1993. Dimerization constants of atrazine and CF₃-labeled atrazine. J. Phys. Chem. 97:11583-11589.
• Barak, P. and Y. Chen. 1992. Equivalent radii of humic macromolecules from acid-base titration. Soil Sci. 152:184-195.
• Bouabid, R., E.A. Nater, and P. Barak. 1992. Measurement of pore size distribution in a lamellar Bt horizon by epifluorescence microscopy and image analysis. Geoderma 53:309-328.
• Hadas, A., M. Sofer, J.A.E. Molina, P. Barak, and C.E. Clapp. 1992. Assimilation of nitrogen by soil microbial population: NH₄ vs. organic N. Soil Biol. Biochem. 24:137- 143.
• Laird, D.A., P. Barak, E.A. Nater, and R.H. Dowdy. 1991. Chemistry of smectitic and illitic phases in interlayered soil smectite. Soil Sci. Soc. Am. J. 55:1499-1504.
• Baruch, E., D. Lichtenberg, P. Barak, and S. Nir. 1991. Calcium binding to bile salts. Chem. Phys. Lipids 57:17-27.
• Barak, P., Y. Coquet, T. Halbach, and J.A.E. Molina. 1991. Evaluation of the biodegradability of polyhydroxybutyrate(co-hydroxyvalerate) and starch-incorporated polyethylene plastic films in soils. J. Environ. Qual. 20:173-179.
• Barak, P., J.A.E. Molina, A. Hadas, and C.E. Clapp. 1990. Mineralization of amino acids and evidence of direct assimilation of organic nitrogen. Soil Sci. Soc. Am. J. 54:769-774.
• Barak, P., J.A.E. Molina, A. Hadas, and C.E. Clapp. 1990. Optimization of an ecological model with the Marquardt algorithm. Ecol. Modelling 51:251-263.
• Barak, P. 1990. SPECIES: A spreadsheet program for modeling speciation of soil solution. J. Agron. Educ. 19:44-46. [Download software!]
• Barak, P. 1989. Double layer theory prediction of Al-Ca exchange on clay and soil. J. Colloid Interface Sci. 133:479-490.

Other publications.

Barak's Virtual Poster Gallery

Courses Taught:

• General Soil Science, Soils 301 (undergrad; course coordinator--Fall 2006)
  
• Plant Nutrition Management, Soils/Hort/Agron 326 (undergrad), 3 cr (Spring semester)
  [General Course Listing] [Visit the Course Home Page]
• Mineral Nutrition of Plants, Soils/Hort/Bot 626 (grad), 3 cr (with Edgar Spalding, Botany; alternate years,Fall 2006)
  [General Course Listing] [Visit the Course Home Page]
• Soils and Environmental Quality, Soils/EnvSt 324, 3 cr (on-line section, Fall 2005)
• Special Topics: Soil Mineralogy, SoilSci 699 (grad), 3 cr (with Ed Nater, Univ of Minnesota; Spring '01.)
• Issues in Agriculture, Environment and Life Sciences, InterAg 155 (freshman seminar; instructor/mentor)
  

Graduate Students:

Leslie Sherman (PhD): Completed degree, 17 Apr 1997 Kang Xia (PhD; Dr. Philip Helmke, coadvisor): Completed degree, Nov 1996 Babou Jobe (MSc): Completed degree, 18 Jan 1996 Gulden Zont (MSc): Completed degree, Aug 1997 Mauricio Avila (PhD) Completed MSc degree, May 1999 DD Levine (MSc) Completed MSc degree, June 2000 Jim Lyne (MSc) Completed MSc degree, Aug 2002 Mauricio Avila (PhD) Completed PhD degree, May 2004 Juli Meyer (MSc) Completed MSc degree, Aug 2004!! Merin Abraham (MSc) (current)

Link to Department of Soil Science, University of Wisconsin-Madison.

Last modified 22 Jul 2007 by Phillip Barak.