662 Emerging Soil Physical Processes and Properties: Colloid-, Water-, and Gas-Phases and Interphases: I

Oral Session
S01 Soil Physics
This session focus on novel or less recognized soil inner space processes in cultivated and urban soil. New or rediscovered processes include colloid mobilization, transport, and straining, colloid-facilitated chemical transport, competitive chemical sorption, water repellency and fingered flow, gas and chemical diffusion and dispersion in critical zone. The session includes measuring and visualizing the effect of water and air phase configuration and soil architecture on colloid and gas distribution. Emerging properties include gas diffusivity and dispersion coefficient, thermal and electrical conductivities, as well as novel measures of soil particle and pore distribution and preferential transport.
Tuesday, 7 October 2008: 12:55 PM-4:00 PM
George R. Brown Convention Center, 362F

Lis de Jonge and Yan Jin
12:55 PM
Introductory Remarks
1:00 PM
Predicting Mobilization and Macropore Transport of Colloids and Phosphorus in Agricultural Soils.
Lis de Jonge, University of Aarhus; Goswin Heckrath, University of Aarhus; Bo Iversen, University of Aarhus; Mathieu Lamande, University of Aarhus; Ole H. Jacobsen, University of Aarhus; Per Moldrup, DENMARK,Aalborg Univ.
1:15 PM
Effect of Hydrodynamics on Colloid Retention Investigated at the Pore Scale.
Volha Lazouskaya, University of Delaware; Xiaoyan Shi, University of Delaware; Lian-Ping Wang, University of Delaware; Yan Jin, University of Delaware
1:30 PM
Three-Dimensional Visualization and Modeling of Colloid Transport in Saturated Porous Media Under Unfavorable Conditions.
Dimin Fan, Department of Plant and Soil Sciences; Hui Gao, Univ. of Delaware; Lian-Ping Wang, University of Delaware; Yan Jin, Univ. of Delaware
1:45 PM
The Effect of Air and Water Phase Configuration on Colloid Retention in Partially Saturated Porous Media.
Yuniati Zevi, Unversity of Delaware; Yan Jin, Unversity of Delaware
2:00 PM
Fate and Transport of Nitrate and Microbes in a Simulated Vadose Zone, Capillary Fringe, and Shallow Groundwater Continuum.
Sergio M. Abit Jr., North Carolina State University; Aziz Amoozegar, North Carolina State University; Michael Vepraskas, North Carolina State University; Christopher Niewoehner, North Carolina State Univ.
2:15 PM
2:30 PM
Competitive Sorption of Nickel and Cadmium in Soils.
Lixia Liao, Louisiana State University Agricultual Center; H. Magdi Selim, Louisiana State University - Agronomy & Environmental Management
2:45 PM
Soil Water Repellency - Cost to Precision Irrigated Apple Productivity.
Stanley Kostka, Aquatrols Corp.; David J. Bell, David J Bell & Associates Pty Ltd
3:00 PM
Dispersion of Reactive Fumigant Gases in Soil.
Dong Wang, USDA-ARS, SJVASC; Nishanth Tharayil, USDA-ARS, SJVASC; Ruijun Qin, USDA-ARS, SJVASC; Suduan Gao, USDA-ARS, SJVASC; Brad Hanson, USDA-ARS, SJVASC; Jim Gerik, USDA-ARS, SJVASC; Greg Browne, USDA- ARS, CPGRU
3:15 PM
Microgravity Implications of Water Distribution on Oxygen Diffusion Pathways in Unsaturated Porous Media.
Robert Heinse, Univ. of Idaho; Scott Jones, Utah State University; Dani Or, ETH Z├╝rich; T. Shane Topham, Space Dynamics Lab.; Igor G. Podolskiy, Inst. of Biomedical Problems; Gail E. Bingham, Space Dynamics Lab.
3:30 PM
Treated Wastewater Reuse in Irrigated Agriculture: Implications for Soil Hydraulic Properties and Water Flow Regime.
Rony Wallach, The Hebrew University of Jerusalem; Ellen Graber, ISRAEL,Inst. Soil & Water
3:45 PM
The Role of Divalent Fatty Acids Soaps at Soil Particle Interfaces in Controlling Wetting Kinetics of Water Repellent Soils.
Ellen Graber, The Volcani Center, Agricultural Research Organization; Shirli Tagger, The Volcani Center, Agricultural Research Organization; Rony Wallach, The Hebrew University of Jerusalem
4:00 PM
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