Data/hora: 14/06/2024 04:16:51

Biblioteca(s): 	Embrapa Cerrados.	
Data corrente: 	22/08/2000	
Data da última atualização: 	22/08/2000	
Autoria: 	MACEDO, M. C.	
Título: 	Sustainability of pasture production in the savannas of tropical America.	
Ano de publicação: 	1999	
Fonte/Imprenta: 	In: INTERNATIONAL GRASSLAND CONFERENCE, 18., 1997, Winnipeg and Saskatoon. Proceedings. [S.l.]: Canadian Forage Council/Canadian Society of Agronomy/Canadian Society of Animal Science, 1999.	
Idioma: 	Inglês	
Notas: 	Grasslands 2000.	
Conteúdo: 	"Savannas" regions are the last and more important frontier to agricultural and livestock exploitation in Tropical America. Amazon jungle is another important native region but because of is great biodiversity and fragility, it has serious constraints to common agricultural exploitation. Brazil, Venezuela and Colombia have the largest area of Savannas in Lation America. More than 80% of that is in Brazil and in this country, the horizontal expansion in savannas is near the end. Since 1970, natural vegetation has been rapidly substituted by introduced grasses from Africa. A monoculture grassland of Brachiaria decumbens is dangerously covering large areas of brazilian savannas. Estimates reach up to 40 million ha. Initial impact caused by this introduction increased animal production 2 to 3 folds compared to native grassland. After that, soil, animal and pasture mismanagement led to pasture degradation, declining animal yields ans to potential environment problems. Pasture mismanagement led to pasture degradation, declining animal yieds and to potential environment problems. Pasture degradation must be avoided and sustainability of pasture and animal production pursued. Understanding sustainability and seaching for indicators to monitor to monitor it should be emphasized. Some suggestions such as diversification of grasses species in the current farming systems, increasing use of grass-legume pasture, chemical and mechanical recuperation and adoption of agropastoral systems are some alternatives to reach sustainability.	
Palavras-Chave: 	America Tropical; Sustainability; Sustentabilidade.	
Thesagro: 	Brachiaria; Cerrado; Pastagem.	
Thesaurus Nal: 	Panicum; pastures.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Cerrados (CPAC)	
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