Fig. 2. The NO-3–N concentration of drainage water (mg L-1) during Year 1 and 2 winter periods for (a) Soil C, (b) Soil B, and (c) Soil L. Symbols: •, fall, total N; 
, summer, total N; 
, spring, total N; 
, fall, urinary N; 
, summer, urinary N; 
, spring, urinary N.