Título:	Characterization, agricultural potential, and perspectives for the management of light soils in Brazil.
Autoria:	DONAGEMMA, G. K. FREITAS, P. L. de BALIEIRO, F. de C. FONTANA, A. SPERA, S. T. LUMBRERAS, J. F. VIANA, J. H. M. ARAUJO FILHO, J. C. de SANTOS, F. C. dos ALBUQUERQUE FILHO, M. R. de MACEDO, M. C. M. TEIXEIRA, P. C. AMARAL, A. J. do BORTOLON, E. S. O. BORTOLON, L.
Afiliação:	GUILHERME KANGUSSU DONAGEMMA, CNPS; PEDRO LUIZ DE FREITAS, CNPS; FABIANO DE CARVALHO BALIEIRO, CNPS; ADEMIR FONTANA, CNPS; SILVIO TULIO SPERA, CPAMT; JOSE FRANCISCO LUMBRERAS, CNPS; JOAO HERBERT MOREIRA VIANA, CNPMS; JOSE COELHO DE ARAUJO FILHO, CNPS; FLAVIA CRISTINA DOS SANTOS, CNPMS; MANOEL RICARDO DE ALBUQUERQUE FILHO, CNPMS; MANUEL CLAUDIO MOTTA MACEDO, CNPGC; PAULO CESAR TEIXEIRA, CNPS; ANDRE JULIO DO AMARAL, CNPS; ELISANDRA SOLANGE OLIVEIRA BORTOLON, CNPASA; LEANDRO BORTOLON, CNPASA.
Ano de publicação:	2016
Referência:	Pesquisa Agropecuária Brasileira, v. 51, n. 9, p. 1003-1020, 2016.
Conteúdo:	Light soils occupy 8% of the Brazilian territory and are especially expressive in the new and last agricultural frontier in Brazil: the Matopiba region - in the states of Maranhão, Tocantins, Piauí, and Bahia -, where they represent 20% of the area. These soils fit into the textural classes of sand and loamy sand or sandy loam, down to 0.75-m soil depth or deeper, and they are mainly represented by Neossolos Quartzarênicos (Quartzipsamments) and, partly, by Latossolos (Oxisols) and Argissolos (Ultisols). The understanding of soil functioning depends on the establishment of distinguishing criteria for: organic matter dynamics; content and mineralogy of the clay fraction; coarse sand and total sand contents, in relation to those of fine sand; mean diameter of the sand fraction; and water retention capacity. These criteria can contribute for the zoning and for the conservation and fertility management of light soils, as well as for the estimation of their agricultural potential. Integrated production systems, such as crop-livestock and crop-livestock-forestry integration, besides no-tillage with crop rotation, mixed forestry planting with legumes, and the use of green manure and cover crops are relevant for the proper management of these soils. The objective of this review was to characterize light soils and to highlight the main challenges regarding their agricultural potential and their conservation and fertility managements, in face of the expansion and consolidation of the new Brazilian agricultural frontier.
Thesagro:	Conservação do Solo Fertilidade do Solo Solo Arenoso
NAL Thesaurus:	Soil management Soil conservation Quartzipsamments Sandy soils Soil fertility
Palavras-chave:	Agricultural aptitude Fragile soils
Digital Object Identifier:	http://dx.doi.org/10.1590/S0100-204X2016000900001
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPS)