01998naa a2200253 a 450000100080000000500110000800800410001910000230006024500970008326000090018050001270018952011110031665000250142765000190145265000260147165000230149765300150152065300270153570000230156270000250158570000230161070000190163377300920165219122242018-04-16       2011    bl uuuu     u00u1 u    #d1 aCARVALHO, A. M. de  aCover plants with potential use for crop-livestock integrated systems in the Cerrado region.  c2011  aTítulo em inglês: Plantas de cobertura com potencial de uso para a integração lavoura?pecuária na região do Cerrado.  aThe objective of this work was to evaluate the effects of lignin, hemicellulose, and cellulose concentrations in the decomposition process of cover plant residues with potential use in no-tillage with corn, for crop-livestock integrated system, in the Cerrado region. The experiment was carried out at Embrapa Cerrados, in Planaltina, DF, Brazil in a split plot experimental design. The plots were represented by the plant species and the subplots by harvesting times, with three replicates. The cover plants Urochloa ruziziensis, Canavalia brasiliensis, Cajanus cajan, Pennisetum glaucum, Mucuna aterrima, Raphanus sativus, Sorghum bicolor were evaluated together with spontaneous plants in the fallow. Cover plants with lower lignin concentrations and, consequently, higher residue decomposition such as C. brasiliensis and U. ruziziensis promoted higher corn yield. High concentrations of lignin inhibit plant residue decomposition and this is favorable for the soil cover. Lower concentrations of lignin result in accelerated plant decomposition, more efficient nutrient cycling, and higher corn yield.  achemical composition  aorganic matter  aComposição química  aMatéria orgânica  aCorn yield  aProdutividade de milho1 aSOUZA, L. L. P. de1 aGUIMARAES JUNIOR, R.1 aALVES, P. C. A. C.1 aVIVALDI, L. J.  tPesquisa agropecuária Brasileira, Brasília, DFgv. 46, n. 10, p. 1200-1205, out. 2011