Fig. 1. Gross N transformation rates (GMR-gross N mineralization rate; GACR- gross ammonium consumption rate; GNR-gross nitrification rate; GNCR-gross nitrate consumption rate) of soil treated with dairy-waste compost (DC), liquid dairy waste (LW), and ammonium sulfate (AS) for the last 6 yr to supply 100 and 200 kg available N ha^–1 annually. Values represent means ±1 SE (n = 4).