
TY  - JOUR
A1  - Ma'shum, M 
A1  - Farmer, VC 
T1  - Origin and assessment of water repellency of a sandy South Australian soil
JF  - Soil Research
JO  - Soil Res.
Y1  - 1985
VL  - 23
IS  - 4
SP  - 623
EP  - 626
KW  - 
UR  - https://doi.org/10.1071/SR9850623 
N2  - The water repellency of a sandy lucerne pasture soil is critically dependent on aqueous extraction and subsequent drying procedures. Freeze-drying converts a very severely water-repellent soil into a readily wettable soil, but subsequent rewetting and oven-drying regenerates water repellency. These changes are ascribed to changes in the molecular conformation of the organic matter. Prolonged shaking detaches organic matter coatings from sand particles and so reduces repellency. Allowing for these effects, it is shown that a sequence of alcohol-benzene extraction, acid leaching, and NaOH extraction removes the major part of the water-repellent substances present. 
ER  -

