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Fig. 5. Total integrated emissions of (a) N2O, and (b) CH4, expressed as mass flux (left-hand axes) and CO2 equivalents (right-hand axes), and (c) total non-CO2 greenhouse gas (GHG) emissions (i.e., N2O + CH4) expressed as CO2 equivalents from anhydrous ammonia (AA), urea ammonium nitrate (UAN), and broadcast urea (BU) treated plots under conventional (CT), conservation (CsT), and no tillage (NT) (mean ± standard error, n = 3). For each parameter and within each year, bars with the same letter designation are not significantly different (p > 0.05).