Full TGIF Record # 164189
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Author(s):Oostindie, K.; Dekker, L. W.; Moore, D.; Wesseling, J. G.; Ritsema, C. J.
Title:Effects of surfactant applications on spatial and temporal variability of water contents in a slope on a sandy fairway with water repellent behavior
Meeting Info.:11-14 April 2010: Angers, Loire Valley, France
Source:2nd European Turfgrass Society Conference Proceedings. Vol. 2, May 21 2010, p. Unknown.
# of Pages:0
Publishing Information:Angers, France: European Turfgrass Society
Abstract/Contents:"Although soils are generally considered to wet readily, numerous soils, especially sandy soils, can become water repellent (difficult to wet) at the surface and in the root zone. Water repellency is often most prominent after prolonged dry spells and usually disappears after prolonged wet periods. It will usually re-appear during drier periods when the soil water content falls below a critical threshold (Dekker et al., 2009). Symptoms of water repellency are often found in the greens, fairways and tees of golf courses as irregular shaped areas of drought-stressed turf, known as localized dry spots (LDS) or dry patch (Dekker et al., 2004). The soil properties associated with water repellency have major consequences on soil water retention and ultimately on the turfgrass stand and appearance. Inhibited turf growth, increased run-off, uneven wetting patterns, preferential flow, and accelerated leaching of applied fertilizers and chemicals are all a result of water repellent conditions. Soil surfactants can be useful for combating water repellency by allowing re-wetting of the root zone and increased moisture levels, which results in improved turf vigor and quality (Oostindie et al., 2008). We conducted a study in an undulating water repellent sandy soil on a fairway near Utrecht in the Netherlands. The first objective of the study was to measure and visualize the seasonal dynamics of preferential flow under water repellent field conditions in the profile of a slope, using the recently developed animation program of Wesseling et al. (2008). The second objective was to investigate the effects of surfactant applications in mitigating the development of water repellency and preferential flow paths in sloped areas using the same slope."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Oostindie, K., L. W. Dekker, D. Moore, J. G. Wesseling, and C. J. Ritsema. 2010. Effects of surfactant applications on spatial and temporal variability of water contents in a slope on a sandy fairway with water repellent behavior. Eur. Turfgrass Soc. Conf. Proc. 2:p. Unknown.
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