Data/hora: 24/09/2024 05:42:13

Biblioteca(s): 	Embrapa Milho e Sorgo.	
Data corrente: 	05/02/2019	
Data da última atualização: 	24/01/2020	
Autoria: 	NGOLO, A. O.; OLIVEIRA, M. F. de; ASSIS, I. R.; ROCHA, G. C.; FERNANDES, R. B. A.	
Afiliação: 	Aristides O. Ngolo, Universidade Federal de Viçosa; MAURILIO FERNANDES DE OLIVEIRA, CNPMS; Igor R. Assis, Universidade Federal de Viçosa; Genelício C. Rocha, Universidade Federal de Viçosa; Raphael B. A. Fernandes, Universidade Federal de Viçosa.	
Título: 	Soil physical quality after 21 years of cultivation in a Brazilian Cerrado Latosol.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Journal of Agricultural Science, v. 11, n. 3, p. 124-136, 2019.	
Idioma: 	Inglês	
Conteúdo: 	Long-term studies aiming soil quality evaluation under different soil management strategies are no common. Long-term evaluations provided more reliable contributions to decision-making and practices adoption. This study evaluated the soil physical quality of a Brazilian Cerrado Latosol after 21 years of three different soil management strategies: disc plowing (DP), no-tillage (NT), and disc harrowing+subsoiling (DHS). In comparison to the reference, a soil from a native Cerrado area, the removal of the original vegetation and the implementation of the three soil management strategies increased the soil bulk density (Bd) and reduced soil porosity, macroporosity, soil organic carbon (SOC) and the size of water-stable aggregates, but did not change the glomalin-related soil protein (GRSP) contents and clay flocculation. Similar effects were diagnosed on soil physical quality when is considered only the three different management strategies, especially on soil porosity, Bd, size of water-stable aggregates, SOC and GRSP contents. Strategies of DP and NT increased soil resistance to penetration in the superficial layers, while the annual use of DHS reduced this soil mechanical characteristic. The NT system did not provide increasing of soil organic carbon in comparison to other management practices evaluated. In conclusion, removing the native vegetation affected soil physical quality, but the Brazilian Cerrado soil is resilient to physical damage even when different intensive farming practices are implemented for more than two decades. The limitation of the NT system in improving the soil physical quality is related to climate conditions that determine the non-maintenance of straw on the soil surface.	
Thesagro: 	Física do Solo; Plantio Direto.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/192059/1/Soil-physical.pdf	
Registro original: 	Embrapa Milho e Sorgo (CNPMS)	
Exemplares: 	CNPMS - (28701-1) - UPC - AP - DD -  -  -  - DIS