<br />DeBano, L.F., and Letey, J., eds., 1969, Water-repellent soils: University of
<br />California, Riverside, May 6-10, 1968, Proceedings, 354 p.
<br />The papers listed below are those included in this symposium. Only those marked with
<br />asterisks have been annotated, and occur as individual entries throughout this document. In
<br />addition to the papers listed, this publication summarizes a general discussion at the end of
<br />the meeting in which the use of terminology was discussed. It was concluded that the term,
<br />"water-repellent", is more appropriate than the term, "hydrophobic", when referring to soil
<br />properties. However, the latter can be used to describe substances that affect a soil's
<br />wettability.
<br />
<br />Session I - Distribution of Water-Repellent Soils:
<br />*Bond, R.D. The occurrence of water-repellent soils in Australia.
<br />Van't Woudt, B.D. Resistance to wettlng under tropical and subtropical conditions.
<br />Jamison, V.c. Wettlng resistance under citrus trees in Florida.
<br />*DeBano, L.F. Observations on water-repellent soils in western United States.
<br />*Holzhey, C.S. Water-repellent soils in Southern Califomia.
<br />
<br />Session II - Characterizing Soil Water Repellency:
<br />*Letey,]. Measurement of contact angle, water drop penetration time, and critical
<br />surface tension.
<br />*Hammond, L.c., and Yuan, T.L. Methods of measuring water repellency of soils.
<br />
<br />Session III - Water Movement in Water-Repellent Soils:
<br />*DeBano, L.F. Water movement in water-repellent soils.
<br />*Brandt, G.H. Water movement in hydrophobic soils:
<br />Gardner, H.R. Effects of hexadecanol and organic matter extract on soil.
<br />*Hussain, S.B., Skau, C.M., Bashir, S.M., and Meeuwig, R.O. Infiltrometer studies of
<br />water-repellent soils on the east slope of the Sierra Nevada.
<br />
<br />Session IV - Modification of Soil Wettability -- Increasing Soil Wettability:
<br />Black, W. Basic chemistry of surface-active agents
<br />Valoras, N. Surfactant adsorption by soil materials
<br />*Cory, J .T. and Morris, R. J. Factors restricting infiltration rates on decomposed
<br />granitic soils.
<br />Watson, c.L. Hydraulic conductivity of soil as influenced by surfactants.
<br />Mustafa, M.A. Nonionic surfactant effect upon soil aggregate stability.
<br />*Krammes, ].S. and Osborn,]. Water-repellent soils and wettlng agents as factors
<br />influencing erosion.
<br />
<br />Session V - Modification of Soil Wettability - Decreasing Soil Wettability:
<br />*Bozer, KB., Brandt, G.H., and Hemwall, ].B. Chemistry of materials that make
<br />soils hydrophobic.
<br />Brandt, G.H. Soil physical properties altered by adsorbed hydrophobic materials.
<br />Fink, D.H.' and Myers, L.E. Synthetic hydrophobic soils for harvesting
<br />precipitation.
<br />Savage, S.M. Contribution of some soil fungi to water repellency in soils materials.
<br />
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