Fig. 3. The two-week integrated emission of CO₂ equivalents reflecting the contribution of individual greenhouse gases CO₂, CH₄, and N₂O. Methane and N₂O equivalents were scaled to CO₂ using scaling factors of 23 and 296, respectively (Intergovernmental Panel on Climate Change, 2001). The standard errors of the least squares mean (n = 3) for CO₂, CH₄, and N₂O are 0.17, 0.01, and 0.92, respectively. FSM, feedlot soil mixture.