Title:	Soil fertility status, carbon and nitrogen stocks under cover crops and tillage regimes
Other Titles:	Fertilidade do solo, estoques de carbono e nitrogênio sob plantas de cobertura e sistemas de manejo
Authors:	Carvalho, Arminda Moreira de Marchão, Robélio Leandro Souza, Kleberson Worslley Bustamante, Mercedes Maria da Cunha
Assunto::	Cerrados Plantio direto Fertilidade do solo Sequestro de carbono
Issue Date:	2014
Publisher:	Universidade Federal do Ceará
Citation:	CARVALHO, Arminda Moreira de et al. Soil fertility status, carbon and nitrogen stocks under cover crops and tillage regimes. Revista Ciência Agronômica, Fortaleza, v. 45, n. 5spe, p. 914-921, 2014. DOI: http://dx.doi.org/10.1590/S1806-66902014000500007. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500007&lng=en&nrm=iso. Acesso em: 16 out. 2019.
Abstract:	The aim of the present study was to evaluate the effects of cover crops on the soil's chemical fertility, in particular its carbon and nitrogen content, in a Typic Acrustox under conventional and no-tillage corn systems. We hypothesized that the no-tillage system associates with cover crops maintains or increases soil carbon and nitrogen stocks and enhance soil fertility. The no-tillage system did not present higher carbon and nitrogen stocks than conventional tillage, but resulted in higher concentrations of exchangeable bases, higher CEC, and higher base saturation in the surface soil layer, mainly under use of Canavalia brasiliensis. Carbon and nitrogen stocks (up to 40 cm depth) differ significantly between the different cover crop species. The use of Mucuna pruriens and Canavalia brasiliensis allows maintain or increase soil C and N stocks. The no-tillage system results in higher accumulation of soil organic matter (0-5 cm), and appears very likely to enhance soil fertility. The use of Canavalia brasiliensis and Mucuna pruriens in succession to corn promotes carbon sequestration and can be used to enhance soil quality in Cerrado agroecosystems.
Licença::	Revista Ciência Agronômica - (CC BY NC) - All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Fonte: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500007&lng=en&nrm=iso&tlng=en. Acesso em: 16 out. 2019.
DOI:	https://dx.doi.org/10.1590/S1806-66902014000500007
Appears in Collections:	Artigos publicados em periódicos e afins

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