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Web URL(s): | http://www.jswconline.org/content/56/2/112.full.pdf+html Last checked: 10/01/2008 Requires: PDF Reader Access conditions: Item is within a limited-access website http://www.jswconline.org/content/56/2/112.full.pdf Last checked: 08/13/2013 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Professional |
Author(s): | Strock, J. S.;
Cassel, D. K. |
Author Affiliation: | Strock: Assistant Professor University of Minnesota, Southwest Research and Outreach Centre in Lamberton, MN; Cassel: Professor, Department of Soil Science, North Carolina State University in Raleigh, NC |
Title: | Developing and testing a system for studying unsaturated solute transport on undisturbed soil blocks |
Section: | Research Other records with the "Research" Section
|
Source: | Journal of Soil and Water Conservation. Vol. 56, No. 2, Second Quarter 2001, p. 112-119. |
Publishing Information: | Ankeny, IA: Soil and Water Conservation Society |
# of Pages: | 8 |
Related Web URL: | http://www.jswconline.org/content/56/2/112.abstract Last checked: 08/13/2013 Notes: Abstract only |
Keywords: | TIC Keywords: Soil profiles; Soil structure; Soil horizons; Equipment; Macropores; Preferential flow
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Abstract/Contents: | "Primary limitations associated with conducting laboratory solute trasport studies are related to size and shape of undisturbed soil cores, effective water delivery system, effluent collection, and experimentation under unsaturated conditions. Compounding the problem of conducting solute trasport studies is the occurrence of preferential flow. The objective of this study was to develop and evaluate the equipment and protocols for conducting unsaturated preferential flow experiments on large, 38 cm by 38 cm by 65 cm deep, undisturbed soil blocks that reduce some of these limitations. System components include a rigid steel framework to assist in collecting undisturbed soil blocks; an 81 cell grid lysimeter plate for partitioning effluent outflow, and applying the desired soil water pressure at the base of the soil block; a bi-directional water drop applicator capable of delivering a range of application rates continuously over the entire soil surface; and a network of soil water monitoring devices for measuring volumetric soil water content and matrix potential. The soil block collected for this experiment was a Cecil sandy loam (Clayey, kaolinitic, thermic, Typic Kanhapludult) from the eastern United States Piedmont region. To evaluate the experimental system, potassium bromide (KBr) was applied to the soil surface (40 kg Br ha-1) and displaced through the soil block. Seventy percent of the cumulative effluent volume and 75% of the cumulative bromide (Br) mass were conducted through 50% of the basal area of the soil block. Cells that conducted high volumes of effluent (> 1000 mL) also trasported considerable amounts of Br, r2 = 0.99. The experimental control offered by the equipment and procedures described in this study allow for detailed study of mechanisms controlling preferential flow of water and chemicals through soils under various boundary conditions." |
Language: | English |
References: | 20 |
Note: | Pictures, b/w Tables Figures Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Strock, J. S., and D. K. Cassel. 2001. Developing and testing a system for studying unsaturated solute transport on undisturbed soil blocks. J. Soil Water Conserv. 56(2):p. 112-119. |
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| Web URL(s): http://www.jswconline.org/content/56/2/112.full.pdf+html Last checked: 10/01/2008 Requires: PDF Reader Access conditions: Item is within a limited-access website http://www.jswconline.org/content/56/2/112.full.pdf Last checked: 08/13/2013 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: S 622 .J65 |
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