Phillip Barak
 |
Phillip Barak, Associate Professor
PhD, Soil Science, 1988, Hebrew University of Jerusalem
Department of Soil Science, University of Wisconsin-Madison
1525 Observatory Dr., Madison, WI 53706-1299
Tel: 608 263-5450 Fax: 608 265-2595 e-mail:
pwbarak@facstaff.wisc.edu
|
Of current interest: College press release,
"Acid
Linked To Soil Aging", 3 Mar 1999
EDUCAUSE/ASA
Medal Award, 26 Oct 1999 and
description

Research interests:
Plant nutrition and soil chemistry of plant nutrients. 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:
- Barak, P., B.O. Jobe, A. Krueger, L.A. Peterson, and D.A. Laird.
1998. 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 89:453-460.
- 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.
Courses Taught:
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)
- Jim Lyne (MSc)
|
 |
Last modified 2 Dec 1999 by Phillip Barak.
|