
%0 Journal Article
%A Till, AR 
%A Blair, GJ 
%A Boswell, CC 
%T Sulfur leaching from soil columns treated with S-35 labeled urine
%J Soil Research
%D 1994/06/01
%V 32
%N 3
%P 535-542
%K Sulfur;Leaching;Sheep;Urine;
%R https://doi.org/10.1071/SR9940535
%U https://www.publish.csiro.au/paper/SR9940535 
%X 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. 
