Fig. 4. Effect of management practices on (A) soil surface CO₂ flux, (B) soil temperature, and (C) soil gravimetric water content at the 0- to 15-cm depth from May to November 2005 in Rasmussen, MT. Treatments are CTFON, conventional-till fallow with 0 kg N ha^–1; NTBFN, no-till malt barley with 78 kg N ha^–1; NTFON, no-till fallow with 0 kg N ha^–1; NTPON, no-till Austrian winter pea with 0 kg N ha^–1; and NTRON, no-till rye with 0 kg N ha^–1. LSD (0.05) is the least significant difference between management practices at P 0.05.