Data/hora: 11/06/2024 10:20:17

Provedor de dados: 	86	
País: 	Brazil	
Título: 	Characterization, agricultural potential, and perspectives for the management of light soils in Brazil	
Autores: 	Donagemma,Guilherme Kangussu; Freitas,Pedro Luiz de; Balieiro,Fabiano de Carvalho; Fontana,Ademir; Spera,Silvio Túlio; Lumbreras,José Francisco; Viana,João Herbert Moreira; Araújo Filho,José Coelho de; Santos,Flávia Cristina dos; Albuquerque,Manoel Ricardo de; Macedo,Manuel Cláudio Motta; Teixeira,Paulo Cesar; Amaral,André Julio; Bortolon,Elisandra; Bortolon,Leandro.	
Data: 	2016-09-01	
Ano: 	2016	
Palavras-chave: 	Agricultural aptitude; Fragile soils; Management and conservation; Neossolos Quartzarênicos (Quartzipsamments); Sandy soils; Soil fertility management.	
Resumo: 	Abstract 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.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901003	
Editor: 	Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira	
Relação: 	10.1590/s0100-204x2016000900001	
Formato: 	text/html	
Fonte: 	Pesquisa Agropecuária Brasileira  v.51 n.9 2016	
Fonte: 	info:eu-repo/semantics/openAccess