
TY  - JOUR
A1  - Magesan, GN 
A1  - White, RE 
A1  - Scotter, DR 
T1  - Nitrate leaching from a drained, sheep-grazed pasture. I. Experimental results and environmental implications
JF  - Soil Research
JO  - Soil Res.
Y1  - 1996
VL  - 34
IS  - 1
SP  - 55
EP  - 67
KW  - chloride, drainage, fertilizer, nitrate.
UR  - https://doi.org/10.1071/SR9960055 
N2  - Nitrate-nitrogen (N) and chloride concentrations were measured in the drainage from two hydrologically similar mole- and pipe-drained paddocks over 3 years: 1989, 1990 and 1991. Urea (50 kg N/ha) that was applied to both paddocks in early spring 1989 had no effect on the nitrate concentrations in the drainage water. In late autumn 1990, 120 kg N/ha as urea was applied to one of the paddocks, but the nitrate leached in the following winter was equivalent to only 8% Of the fertilizer N. The nitrate concentrations in the drainage were greater than 10 g N/m3 for most of the season, with peak concentrations up to 35 g N/m3, even for the paddock where urea was not applied. The paddocks were periodically mob-grazed by sheep during the monitoring period, but this had no measurable effect on the nitrate and chloride concentrations in the drainage collected during or immediately after grazing. 
ER  -

