| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Cerrados. |
|
Data corrente: |
19/10/2001 |
|
Data da última atualização: |
19/10/2001 |
|
Autoria: |
KERRIDGE, P. C. |
|
Título: |
A historical perspective of agropastoral system research in the savannas of South America. |
|
Ano de publicação: |
2001 |
|
Fonte/Imprenta: |
In: KANNO, T.; MACEDO, M.C.M., ed. JIRCAS / EMBRAPA gado de corte international joint workshop on agropastoral system in South America. [Tsukuba]: JIRCAS, 2001. |
|
Páginas: |
p.3-17. |
|
Série: |
(JIRCAS Working Report, 19). |
|
Idioma: |
Inglês |
|
Conteúdo: |
The savana agroecosystem South America occupies 250 million hectares in Bolivia, Brazil, Colombia, Guyana and is one of the most important potential areas for expansion of agricultural production in the world. Animal production and cropping evolved separately with little integration even at the farm level. The opening of somo 12 million ha of this area to dry land agriculture over the last 40 years has shown the great potential for increasing food supply but also has showthat arable cropping alone is not sustainable under current exploitive management practices. Under continuous cropping, soil productivity declines due to soil loss, soil compaction, loss of organic matter and increase in pests, diases and weeds. Farmes and researchers are now investigating and implementing more sustainable systems. Integrated agropastoral systems appear to be the key to sustainable development. There have been notable advances in the development of productive and sustainable systems by recearchers and farmers. Recearch has highlighted the synergistic role of integrated croplivestock farming in improving the physical, chemical and biological properties of the soils. There is still a need for more research on emerging problems associated with long-term cropping and grazing that lead to soil degradation, namely, depletion of soil fertility, increases in pest and disease incidence, and weed infestation. Future research will focus more on intregrated crop and livestock management rather than individual components of the farming system. The names savanas conjures a sense of similarity and much of the research, development and dissemination of results has proceeded on the basis of this similarity. One common characteristic is that the majority of soils are highly weathered, acidic and low in base minerals. Nevertheless there is considerable diversity in texture and organic matter. Furthermore there is great diversity in climate, landscapes, natural vegetation, social and economic factors, and in policies that have been promulgated in the different countries. Research in the savannas might be regarded as following an evolutionary path. Biophisicalresearch is quite advanced but there has been less attention to research in the area of socio-economics and environmental issues and on integration of the outcomes with biophisical research. There is scope for further analysis and synthesis of the policies and factors that have provided the driving forces for development up to the present time. This will provide direction for future planning and policy formulation and research needs. Research will need to be carried out within a systems context and be responsive to the demands of both the farming community and society. Development strategies for sustainable land will need to focus on greater comunity involvement than in the past. A positive element in savanna research has been the interest shown by national and international scientists and governments in working in multi-disciplinary teams and in sharing research results. MenosThe savana agroecosystem South America occupies 250 million hectares in Bolivia, Brazil, Colombia, Guyana and is one of the most important potential areas for expansion of agricultural production in the world. Animal production and cropping evolved separately with little integration even at the farm level. The opening of somo 12 million ha of this area to dry land agriculture over the last 40 years has shown the great potential for increasing food supply but also has showthat arable cropping alone is not sustainable under current exploitive management practices. Under continuous cropping, soil productivity declines due to soil loss, soil compaction, loss of organic matter and increase in pests, diases and weeds. Farmes and researchers are now investigating and implementing more sustainable systems. Integrated agropastoral systems appear to be the key to sustainable development. There have been notable advances in the development of productive and sustainable systems by recearchers and farmers. Recearch has highlighted the synergistic role of integrated croplivestock farming in improving the physical, chemical and biological properties of the soils. There is still a need for more research on emerging problems associated with long-term cropping and grazing that lead to soil degradation, namely, depletion of soil fertility, increases in pest and disease incidence, and weed infestation. Future research will focus more on intregrated crop and livestock management rather than indi... Mostrar Tudo |
|
Palavras-Chave: |
Agropatoral systems; America do Sul; Savana; Sistema agropastoril. |
|
Thesagro: |
Cerrado. |
|
Thesaurus Nal: |
savannas; South America. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 03795naa a2200229 a 4500
001 1555559
005 2001-10-19
008 2001 bl uuuu u00u1 u #d
100 1 $aKERRIDGE, P. C.
245 $aA historical perspective of agropastoral system research in the savannas of South America.
260 $c2001
300 $ap.3-17.
490 $a(JIRCAS Working Report, 19).
520 $aThe savana agroecosystem South America occupies 250 million hectares in Bolivia, Brazil, Colombia, Guyana and is one of the most important potential areas for expansion of agricultural production in the world. Animal production and cropping evolved separately with little integration even at the farm level. The opening of somo 12 million ha of this area to dry land agriculture over the last 40 years has shown the great potential for increasing food supply but also has showthat arable cropping alone is not sustainable under current exploitive management practices. Under continuous cropping, soil productivity declines due to soil loss, soil compaction, loss of organic matter and increase in pests, diases and weeds. Farmes and researchers are now investigating and implementing more sustainable systems. Integrated agropastoral systems appear to be the key to sustainable development. There have been notable advances in the development of productive and sustainable systems by recearchers and farmers. Recearch has highlighted the synergistic role of integrated croplivestock farming in improving the physical, chemical and biological properties of the soils. There is still a need for more research on emerging problems associated with long-term cropping and grazing that lead to soil degradation, namely, depletion of soil fertility, increases in pest and disease incidence, and weed infestation. Future research will focus more on intregrated crop and livestock management rather than individual components of the farming system. The names savanas conjures a sense of similarity and much of the research, development and dissemination of results has proceeded on the basis of this similarity. One common characteristic is that the majority of soils are highly weathered, acidic and low in base minerals. Nevertheless there is considerable diversity in texture and organic matter. Furthermore there is great diversity in climate, landscapes, natural vegetation, social and economic factors, and in policies that have been promulgated in the different countries. Research in the savannas might be regarded as following an evolutionary path. Biophisicalresearch is quite advanced but there has been less attention to research in the area of socio-economics and environmental issues and on integration of the outcomes with biophisical research. There is scope for further analysis and synthesis of the policies and factors that have provided the driving forces for development up to the present time. This will provide direction for future planning and policy formulation and research needs. Research will need to be carried out within a systems context and be responsive to the demands of both the farming community and society. Development strategies for sustainable land will need to focus on greater comunity involvement than in the past. A positive element in savanna research has been the interest shown by national and international scientists and governments in working in multi-disciplinary teams and in sharing research results.
650 $asavannas
650 $aSouth America
650 $aCerrado
653 $aAgropatoral systems
653 $aAmerica do Sul
653 $aSavana
653 $aSistema agropastoril
773 $tIn: KANNO, T.; MACEDO, M.C.M., ed. JIRCAS / EMBRAPA gado de corte international joint workshop on agropastoral system in South America. [Tsukuba]: JIRCAS, 2001.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Cerrados (CPAC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 3 | |
| 1. |  | RAO, I. M.; KERRIDGE, P. C.; MACEDO, M. C. M. Nutritional requirements of Brachiaria and adaptation to acid soils. In: MILES, J.W.; MAASS, B.L.; VALLE, C.B. do, ed. Brachiaria: biology, agronomy and improvement. Cali: CIAT / Brasilia: EMBRAPA-CNPGC, 1996. p.53-71. (CIAT Publication, 259). CNPGC.| Biblioteca(s): Embrapa Gado de Corte. |
|   |
| 2. | | KERRIDGE, P. C.; PIZARRO, E. A.; VALLS, J. F. M.; ARGEL, P. J.; BARCELLOS, A.; MAASS, B. L. Genetic improvement through exploiting natural diversity. In: SIMPOSIO SOBRE O CERRADO, 8., 1996. Brasilia, DF. Anais do 8. Simposio sobre o cerrado: biodiversidade e producao sustentavel de alimentos e fibras nos cerrados. Planaltina, DF: EMBRAPA-CPAC, 1996. p.311. p.311| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
| |
| 3. | | KERRIDGE, P. C.; PIZARRO, E. A.; VALLS, J. F. M.; ARGEL, P. J.; BARCELLOS, A.; MAASS, B. L. Genetic improvement through exploiting natural diversity. In: SIMPOSIO SOBRE O CERRADO, 8.; INTERNATIONAL SYMPOSIUM ON TROPICAL SAVANNAS, 1., 1996, Brasilia, DF. Biodiversidade e producao sustentavel de alimentos e fibras nos Cerrados: anais... Planaltina: EMBRAPA-CPAC, 1996. p.311.| Biblioteca(s): Embrapa Cerrados. |
|  |
| Registros recuperados : 3 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
