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AGU: Water Resources Research

 

Keywords

  • water repellency
  • hydrophobicity
  • measuring method

Index Terms

  • Hydrology: Anthropogenic effects
  • Hydrology: Drought
  • Hydrology: Infiltration
  • Hydrology: Overland flow

Abstract

WATER RESOURCES RESEARCH, VOL. 45, W00D33, 6 PP., 2009
doi:10.1029/2008WR007070

Methods for determining soil water repellency on field‐moist samples

Louis W. Dekker

Soil Science Center, Alterra, Wageningen, Netherlands

Coen J. Ritsema

Soil Science Center, Alterra, Wageningen, Netherlands

Erosion and Soil and Water Conservation Group, Wageningen University, Wageningen, Netherlands

Klaas Oostindie

Soil Science Center, Alterra, Wageningen, Netherlands

Demie Moore

Aquatrols Corporation of America, Paulsboro, New Jersey, USA

Jan G. Wesseling

Soil Science Center, Alterra, Wageningen, Netherlands

In this paper we describe a simple and quick method for determining the presence of water repellency in a soil by using a small core sampler (1.5 cm in diameter, 25 cm long) and applying the water drop penetration time (WDPT) test at different depths on the sandy soil cores. Obtained results provide spatial distribution patterns of water repellency in a soil profile, demonstrating seasonal changes in repellency. An advantage of the method is that the soil is not disturbed by the sampling. For assessment of the persistence of water repellency in strongly to extremely water repellent soils, and for determination of the critical soil water contents, the WDPT test and volumetric water content determinations should preferably be performed in the laboratory.

Received 4 April 2008; accepted 10 February 2009; published 14 April 2009.

Citation: Dekker, L. W., C. J. Ritsema, K. Oostindie, D. Moore, and J. G. Wesseling (2009), Methods for determining soil water repellency on field‐moist samples, Water Resour. Res., 45, W00D33, doi:10.1029/2008WR007070.

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