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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Depew, M. W.;
Griffin, R. W.;
Wilding, L. P.;
Beard, J. B. |
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| Author Affiliation: | Texas A & M University |
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| Title: | Assessment of a column method of infiltration measurement on layered high sand root zone constructions |
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| Source: | Agronomy Abstracts. October 1991, p. 174. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| Keywords: | TIC Keywords: Root zone; Soil layering; Groundwater; Infiltration
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| Abstract/Contents: | "In-situ hydraulic properties of sand-modified turfgrass root zone have typically been assessed by single or double ring infiltrometers. Many of these high sand root zones are intentionally layered by construction design and commonly this is enhanced by pedogenic layering. These layers facilitate lateral water flow divergence below the hydraulic cylinder and pose a significant potential source of measurement error. A column method has been developed to obtain one-dimensional flow in layered systems. Column method infiltration was compered to double ring infiltration determinations using latex dyes to indicate lateral divergence below the cylinders. Comparison of the two methods on two sand turfgrass root zones indicated that the double ring method gave infiltration values 10- to 100-fold greater than the column method. This was due to lateral flow path divergence commonly exceeding 25 cm from the perimeter of the cylinder." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Depew, M. W., R. W. Griffin, L. P. Wilding, and J. B. Beard. 1991. Assessment of a column method of infiltration measurement on layered high sand root zone constructions. Annu. Meet. Abstr. p. 174. |
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MSU catalog number: S 1 .A58 |
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