Full TGIF Record # 71144
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Schlossberg, M. J.; Miller, W. P.
Author Affiliation:University of Georgia
Title:Effect of nonionic surfactants on infiltration rates of USGA sands
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Meeting Info.:Minneapolis, MN: November 5-9, 2000
Source:2000 Annual Meeting Abstracts [ASA/CSSA/SSSA]. 2000, p. 161.
Publishing Information:[Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
# of Pages:1
Keywords:TIC Keywords: Nonionic surfactants; Surfactants; Wettability; Localized dry spots; Porosity; Organic amendments; Hydrophobic soils; Infiltration; Surface tension; USGA recommendations; Mathematical equations; Sand-based root zones
Abstract/Contents:"Application of nonionic surfactants (NS) to sand-based turfgrass soil for improved wettability and treatment of localized dry spot (LDS) has become increasingly common. Efficacy of these applications depend on properties of the soil. This study was conducted to determine effects of soil texture and porosity, organic amendment inclusion, and degree of surface hydrophobicity of sand mixes on the infiltration rate of commercially available, 'soil-formulated' NS. A modified Poiseuille's equation was applied to equilibrium capillary rise measurements to approximate requisite soil properties enabling factorial arrays of physicochemical characteristics to be constructed and tested. Laboratory results show infiltration of label-rate NS solution into wettable USGA sand and sand/peat mixes to be significantly less than that of deionized (DI) H2O (48 and 73%, respectively). This reaffirms previous work illustrating the direct relation between soil infiltration rate and solution surface tension (ST), and validates the influential characterization of ST in Poiseulle's approximation of infiltration. Expectedly, infiltration of NS solutions into hydrophobic USGA sand and sand/peat mixes were significantly greater than DI H2O. Nevertheless, implementation of NS on sand-based root zones without elevated surface hydrophobicity may result in non-uniform wetting, poor distribution of fertilizer and pesticides, and resource misallocation."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Schlossberg, M. J., and W. P. Miller. 2000. Effect of nonionic surfactants on infiltration rates of USGA sands. Annu. Meet. Abstr. p. 161.
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