publication . Article . 2007

Effects of organic compounds, water content and clay on the water repellency of a model sandy soil

D. A. L. Leelamanie; Jutaro Karube;
Open Access
  • Published: 15 Nov 2007 Journal: Soil Science and Plant Nutrition, volume 53, pages 711-719 (issn: 0038-0768, eissn: 1747-0765, Copyright policy)
  • Publisher: Informa UK Limited
Abstract Soil water repellency is related to organic matter and clay, and varies non-linearly with soil water content. The purpose of this study is to assess the combined effects of organic compounds, water content and clays on water repellency of a model sandy soil under wetting and drying processes. Hydrophobic stearic acid and hydrophilic glucomannan were used as the organic compounds, and kaolinite or montmorillonite was used as the clay conditioner. Water repellency was estimated using the water drop penetration time test. Repellency did not appear in samples free of stearic acid. Samples containing both stearic acid and glucomannan showed higher repellency...
Medical Subject Headings: fungianimal structurescomplex mixturesfood and beverageslipids (amino acids, peptides, and proteins)
free text keywords: Plant Science, Soil Science, Wetting, Glucomannan, chemistry.chemical_compound, chemistry, Organic matter, chemistry.chemical_classification, Agronomy, Montmorillonite, Stearic acid, Water content, Soil water, Kaolinite, Environmental chemistry
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