01843naa a2200325 a 450000100080000000500110000800800410001902400370006010000140009724501680011126000090027952009230028865000250121165000090123665000100124565000120125565000120126765000190127965300110129870000220130970000160133170000140134770000180136170000140137970000150139370000150140870000150142370000150143877300640145312160082022-06-06       2007    bl uuuu     u00u1 u    #d7 a10.1016/j.still.2006.07.0092DOI1 aMETAY, A.  aStorage and forms of organic carbon in a no-tillage under cover crops system on clayey Oxisol in dryland rice production (Cerrados, Brazil).h[electronic resource]  c2007  aThe management and enhancement of soil organic carbon (SOC) is very important for agriculture (fertility) as well as for the environment (carbon (C) sequestration). Consequently, changes in soil management may alter SOC content. No-tillage (NT) practices are potential ways to increase SOC. We studied the SOC from agricultural soils in the Cerrados in Central Brazil. We compared two different tillage systems: conservation agriculture with no-tillage under cover crops (NT) and disc tillage (DT) for 5 years in a context of rainfed rice production. The soil is a dark red Oxisol with high clay content (about 40%). The objectives of the study were: (i) to evaluate the short-term (5 years) impact of tillage systems on SOC stocks in an Oxisol and (ii) to better understand the dynamics of SOC in different fractions of this soil. We first studied the initial situation in 1998, and compared it to the 2003 situation.  acarbon sequestration  arice  aArroz  aCarbono  aCerrado  aPlantio Direto  aBrasil1 aMOREIRA, J. A. A.1 aBERNOUX, M.1 aBOYER, T.1 aDOUZET, J. M.1 aFEIGL, B.1 aFELLER, C.1 aMARAUX, F.1 aOLIVER, R.1 aSCOPEL, E.  tSoil & Tillage Researchgv. 94, n. 1, p. 122-132, May 2007.