
%0 Journal Article
%A Fleming, N. K. 
%A Cox, J. W. 
%T Chemical losses off dairy catchments located on a texture-contrast soil: carbon, phosphorus, sulfur, and other chemicals
%J Soil Research
%D 1998/11/12
%V 36
%N 6
%P 979-996
%K pasture, runoff, dissolved, particulate, load, water.
%R https://doi.org/10.1071/S98013
%U https://www.publish.csiro.au/paper/S98013 
%X Runoff (overland flow and A/B horizon interflow) from 2 grazed dairy pastures at Flaxley, South Australia, accounted for &#60;15% of April&#123;October rainfall in 1996; 88&#123;96% of runoff was overland flow. A range of chemicals, including carbon (C), phosphorus (P), and sulfur (S), was measured in runoff As much as 2&#183;3 kg P/ha, 10&#183;7 kg/ha of total dissolved C, and 1&#183;8 kg S/ha was lost from the catchments in that year. Loads of other chemicals ranged from 0&#183;6 g/ha (boron) to 39&#183;8 kg/ha (aluminium). Over 92% of P, 76% of total dissolved C, and 93% of S was lost in overland flow. Between 50% and 60% of P, and 60% and 85% of S, was in the dissolved form; 64-96% of total dissolved C was dissolved organic C. Other chemicals varied from 0% (aluminium) to 97% (sodium) as the dissolved form. Relatively high losses of P and dissolved organic C are important to a dairy industry which is under increasing pressure to demonstrate minimal environmental impact from farming practices. 
