
TY  - JOUR
A1  - Till, AR 
A1  - Blair, GJ 
A1  - Boswell, CC 
T1  - Sulfur leaching from soil columns treated with S-35 labeled urine
JF  - Soil Research
JO  - Soil Res.
Y1  - 1994
VL  - 32
IS  - 3
SP  - 535
EP  - 542
KW  - Sulfur;Leaching;Sheep;Urine;
UR  - https://doi.org/10.1071/SR9940535 
N2  - Pasture improvement has led to increased stocking rates which has potentially increased sulfur losses in urine patches and in sheep camps in merino enterprises. A study was undertaken using soil collected from a camp and non-camp area of an aeric ochraqualf soil. 35S-labelled urine was applied to these soils and the columns were leached daily for 7 days or subjected to wet/dry treatments for 7 cycles. The amount of S leached was dependent on the soil S level and the nature of the wetting and drying cycles. There were significant losses of unlabelled soil S in the leachate and retention of 35S in the profile which indicates that the sulfate in the profile moves en masse, most likely through continuously dynamic adsorption/desorption reactions. 
ER  -

