
TY  - JOUR
A1  - Mclay, CDA 
A1  - Cameron, KC 
A1  - Mclaren, RG 
T1  - Influence of soil structure on sulfate leaching from a silt loam
JF  - Soil Research
JO  - Soil Res.
Y1  - 1992
VL  - 30
IS  - 4
SP  - 443
EP  - 455
KW  - 
UR  - https://doi.org/10.1071/SR9920443 
N2  - The influence of soil structure on sulfate leaching from a silt loam soil was assessed by comparing the results of leaching experiments conducted using undisturbed soil monolith lysimeters and re-packed soil columns. A pulse application of sulfate solution was leached through both soil systems under non-ponded infiltration conditions. Breakthrough curves (BTCs) from the undisturbed soil lysimeters were poly-modal compared with the uni-modal curves observed in re-packed column experiments. The poly-modal BTC is considered to result from sulfate leached through isolated porosity regions within the undisturbed soil monolith. Sulfate leaching rates were faster through the undisturbed soil lysimeters and this was attributed to solute transport through the natural soil macropore system, which is retained in the undisturbed soil but lost in the repacked soil columns. Leaching through soil macropores therefore can result in considerable losses of sulfur from silt loam textured soils. 
ER  -

