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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2001jou498.pdf
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| Publication Type:
| Refereed |
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| Author(s): | Dekker, L. W.;
Oostindie, K.;
Ziogas, A. K.;
Ritsema, C. J. |
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| Author Affiliation: | Dekker, Oostindie, Ritsema: Department of Land Use and Soil Processes, Alterra, Green World Research Wageningen, The Netherlands; Ziogas: Department of Civil Engineering, Demokritus University of Thrace, Xanthi, Greece |
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| Title: | The impact of water repellency on soil moisture variability and preferential flow |
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| Section: | Soil physics
Other records with the "Soil physics" Section
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| Meeting Info.: | Toronto, Ontario, Canada: July 2001 |
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| Source: | International Turfgrass Society Research Journal. Vol. 9, No. Part 2, 2001, p. 498-505. |
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| Publishing Information: | Oakville, Ontario, Canada: International Turfgrass Society |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Water repellency; Soil moisture; Preferential flow; Soil water; Hydrophobic soils; Infiltration; Topsoil
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| Abstract/Contents: | "Many soils may be water repellent to some degree, challenging the common perception that soil water repellency is only an interesting aberration. When dry, water repellent soils resist or retard water infiltration into the soil matrix. Soil water repellency often leads to the development of unstable wetting and preferential flow paths. In this study the persistence of water repellency was examined in topsoils using the water drop penetration time (WDPT) test. The severity of water repellency measured on dried soil samples, the so-called "potential" water repellency, can be used as a parameter for comparing soils with respect to their sensitivity to water repellency. Measurement of the "actual" water repellency on field-moist samples determines the soil fraction excluded from direct solute and water flow. However, preferential flow is a dynamic process, which is why the ratio between water repellent and water wettable soil is time dependent. The "critical soil water content", below which the soil in the field is water repellent and above which the soil is wettable, was found to be a useful parameter in water repellency studies. Spatial and temporal variability in volumetric soil water content was studied in vertical transects by intensive sampling of field-soils in the Netherlands and Greece with 100 cm3 steel cylinders. Spatial variability in soil water content was high in water repellent sand, loam, clay and peat soils, due to the occurrence of fingered flow." |
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| Language: | English |
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| References: | 27 |
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| Note: | Pictures, b/w
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dekker, L. W., K. Oostindie, A. K. Ziogas, and C. J. Ritsema. 2001. The impact of water repellency on soil moisture variability and preferential flow. Int. Turfgrass Soc. Res. J. 9(Part 2):p. 498-505. |
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| Web URL(s):
https://archive.lib.msu.edu/tic/its/articles/2001jou498.pdf
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MSU catalog number: SB 433 .I52 v. 9 |
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