Data/hora: 09/06/2024 18:09:21

Biblioteca(s): 	Embrapa Cerrados.	
Data corrente: 	22/09/1997	
Data da última atualização: 	22/09/1997	
Autoria: 	TOLEDO, J. M.; ZEIGLER, R. S.; TORRES, F.	
Título: 	Sustainable utilization of poor acid soils of Tropical America.	
Ano de publicação: 	1990	
Fonte/Imprenta: 	Tsukuba, Japan: TARC, 1990.	
Páginas: 	p.133-145.	
Série: 	(Tropical Agriculture Research Series, 24).	
Idioma: 	Inglês	
Notas: 	Trabalho apresentado no " 24th International Symposium on Tropical Agriculture Research, Kyoto, Japan, 1990".	
Conteúdo: 	Tropical America's 800 million hectares of savannas and forests are characterized by the predominance of acid Oxisols and Utisols with low fertility. These frontier lands are being incorporated into the regions's agricultural production area. Land-clearing and intensication of areas close to infrastructure cause degradation of natural systems. CIAT strategies to reduce pressures for land-clearing in fragile environments include the development of sustainable agropastoral production systems for less fragile savanna environments and the reclamation of already degraded forest lands by the replacement of extensive ranching and shifting cultivation with sustainable agrosivilvopastoral systems. To achieve these specific strategies, it is necessary to promote efficient input use based on adapted components; low-cost management to maximize outputs and effectively use natural and purchased inputs in minimizing negative environmental effects; and maximizing nutrient cycling. New, adapted grass-legume pastures, upland rice, maize, sorghum, soybeans and cassava cultivars are becoming available. Crops can pay for upgrading soil fertility to establish pastures and tree components. Grass-legume pastures with deep and profuse roots can reduce erosion and improve the physical chemical and biological soil conditions for subsequent cropping. To realize the potential of these sustainable integrated systems on poor acid soils, technologies must be based on commercially valuable...	
Palavras-Chave: 	Agrosilvopastorial systems; America tropical; Management; Sistema agrosilvipastoril; Sustainability; Sustentabilidade; Tropical America.	
Thesagro: 	Cerrado; Manejo; Solo Ácido.	
Thesaurus Nal: 	acid soils.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Cerrados (CPAC)	
Exemplares: 	CPAC - (10024-1) - ADD - SP - -- - CRI4392 -  - CRI4392 - DIS