Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 316188
Title Water repellency of soils; the influence of ambient relative humidity
Author(s) Doerr, S.H.; Dekker, L.W.; Ritsema, C.J.; Shakesby, R.A.; Bryant, R.
Source Soil Science Society of America Journal 66 (2002)2. - ISSN 0361-5995 - p. 401 - 405.
Department(s) Bodem en Landgebruik
Publication type Refereed Article in a scientific journal
Publication year 2002
Keyword(s) bodemwater - afstoting - temperatuur - relatieve vochtigheid - meteorologie - bodemwaterbeweging - zandgronden - bodemfysica - bodemvocht - waterafstotendheid - soil water - repellency - temperature - relative humidity - meteorology - soil water movement - sandy soils
Categories Soil Physics
Abstract Adverse effects of soil water repellency (hydrophobicity) are of concern during or following rainfall or irrigation, and are often preceded by conditions of high atmospheric relative humidity (RH). Assessments of repellency are, however, commonly conducted on air-dried samples at ambient laboratory conditions. This study explores the effects of differing antecedent RHs (32-98%) on the water repellency of air-dried soils of wide ranging characteristics under laboratory conditions using water drop penetration time (WDPT) and ethanol-percentage tests. Most samples exhibited considerably higher water repellency after exposure (< 1 d) to 98% RH compared with lower RHs, typical of ambient laboratory conditions. This work suggests that previous studies mayhave incorrectly classified some soils, likely to exhibit water repellency in the field, as wettable, and that tests carried out following exposure of samples to high RH provide assessments that best reflect critical field conditions.
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