No-till only increases N 2 O emissions in poorly-aerated soils

100P. Rochette / Soil & Tillage Research 101 (2008) 97–100MacKenzie, A.F., Fan, M.X., Cadrin, F., 1997. Nitrous oxide emission as affected bytillage, corn–soybean–alfalfa rotations and nitrogen fertilization. Can. J. Soil Sci.77, 145–152.Malhi, S.S., Lemke, R.L., Wang, Z., Chhabra, B., 2006. Tillage, nitrogen and cropresidue effects on crop yield, nutrient uptake, soil quality, and greenhouse gasemissions. Soil Till. Res. 90, 171–183.Malhi, S.S., Lemke, R.L., 2007. Tillage, crop residue and N fertilizer effects on cropyield, nutrient uptake, soil quality and nitrous oxide gas emissions in a second4-yr rotation cycle. Soil Till. Res. 96, 269–283.Metay, A., Oliver, R., Scopel, E., Douzet, J.-M., Alves Moreira, J.A., Maraux, F., Feigl, B.J.,Feller, C., 2007. N 2 O and CH 4 emissions from soils under conventional and notillmanagement practices in Goiânia (Cerrados, Brazil). Geoderma 141, 78–88.Minasny, B., McBratney, A.B., Bristow, K.L., 1999. Comparison of differentapproaches to the development of pedotransfer functions for water-retentioncurves. Geoderma 93, 225–253.Mosier, A.R., Halvorson, A.D., Reule, C., Liu, X., 2006. Net global warming potentialand greenhouse gas intensity in irrigated cropping systems in northeasternColorado. J. Environ. Qual. 35, 1584–1598.Mummey, D.L., Smith, J.L., Bluhm, G., 1998. Assessment of alternative soil managementpractices on N 2 O emissions from US agriculture. Agric. Ecosyst. Environ.70, 79–87.Oorts, K., Merckx, R., Gréhan, E., Labreuche, J., Nicolardot, B., 2007. Determinants ofannual fluxes of CO 2 and N 2 O in long-term no-tillage and conventional tillagesystems in northern France. Soil Till. Res. 95, 133–148.Palma, R.M., Rimolo, M., Saubidet, M.I., Conti, M.E., 1997. Influence of tillage systemon denitrification in maize-cropped soils. Biol. Fertil. Soils 25, 142–146.Parkin, T.B., Kaspar, T.C., 2006. Nitrous oxide emissions from corn–soybean systemsin the midwest. J. Environ. Qual. 35, 1496–1506.Rochette, P., Angers, D.A., Chantigny, M.H., Bertrand, N., 2008. N 2 O emissionsrespond differently to no-till in a loam and a heavy clay soil. Soil Sci. Soc.Am. J. 72, 1363–1369.Six, J., Feller, C., Denef, K., Ogle, S.M., de Moraes Sa, J.C., Albrecht, A., 2002. Soilorganic matter, biota and aggregation in temperate and tropical soils—effects ofno-tillage. Agronomie 22, 755–775.Six, J., Ogle, S.M., Breidt, F.J., Conant, R.T., Mosier, A.R., Paustian, K., 2004.The potential to mitigate global warming with no-tillage management is onlyrealized when practised in the long term. Global Change Biol. 10, 155–160.Smith, M.S., Tiedje, J.M., 1979. Phases of denitrification following oxygen depletionin soil. Soil Biol. Biochem. 11, 261–267.VandenBygaart, A.J., McConkey, B.G., Angers, D.A., Smith, W., de Gooijer, H., Bentham,M., Martin, T., 2008, in press. Soil carbon change factors for the CanadianAgriculture National Greenhouse Gas Inventory. Can. J. Soil Sci.