| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Pantanal; Embrapa Solos. |
|
Data corrente: |
18/03/1998 |
|
Data da última atualização: |
22/11/2002 |
|
Autoria: |
BAENA, A. R. C. |
|
Título: |
The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest. |
|
Ano de publicação: |
1977 |
|
Fonte/Imprenta: |
Ames: Iowa State University, 1977. |
|
Páginas: |
172p. |
|
Idioma: |
Inglês |
|
Notas: |
Tese Mestrado. |
|
Conteúdo: |
Large areas of rain forest in the Amazon Basin, Brazil, are being developed for pasture production. Knowledge is needed as to the effect on soil properties of changing from forest to grass. This knowledge should help in predicting the long-time productivity of the pastures. At "Fazenda Piquia" Paragominas State of Para, Brazil, soil profile samples were collected under forest, on freshly burned land and on land that had been in pasture for 2, 6, and 10 years. Pastures consist of Guinea grass (Panicum maximum). Pastures were grazed in a rotating grassing system and were burned annually. Rainfall averages 2591 mm annually with 80% of the annual total falling in the six-month period December through May. There are significant differences in soil texture and in cation exchanges capacity, the most stable of soil properties measured. These differences indicate that there are measurable differences between soils at the different sites and thus that other soil differences may be due to original soil differences as well as or in place of differences caused by treatment differences. However, all profiles are medium textured Oxisol and the exchange capacity determinations indicate that all clays are of kaolinitic types. Among surface samples all exchangeable bases measured. Ca, Mg and K, are lowest in the forest soil and are higher in the samples from the burned area and form all lthe pastures. Land that has been in pasture for 10 years has as much bases in the surface as the recently cleaned and burned land.................. MenosLarge areas of rain forest in the Amazon Basin, Brazil, are being developed for pasture production. Knowledge is needed as to the effect on soil properties of changing from forest to grass. This knowledge should help in predicting the long-time productivity of the pastures. At "Fazenda Piquia" Paragominas State of Para, Brazil, soil profile samples were collected under forest, on freshly burned land and on land that had been in pasture for 2, 6, and 10 years. Pastures consist of Guinea grass (Panicum maximum). Pastures were grazed in a rotating grassing system and were burned annually. Rainfall averages 2591 mm annually with 80% of the annual total falling in the six-month period December through May. There are significant differences in soil texture and in cation exchanges capacity, the most stable of soil properties measured. These differences indicate that there are measurable differences between soils at the different sites and thus that other soil differences may be due to original soil differences as well as or in place of differences caused by treatment differences. However, all profiles are medium textured Oxisol and the exchange capacity determinations indicate that all clays are of kaolinitic types. Among surface samples all exchangeable bases measured. Ca, Mg and K, are lowest in the forest soil and are higher in the samples from the burned area and form all lthe pastures. Land that has been in pasture for 10 years has as much bases in the surface as the recently ... Mostrar Tudo |
|
Palavras-Chave: |
Burnind; Composicao; Conteúdo mineral; Efeito do fogo; Fire; Forest; Land clearing; Management; Manejo de pastagem; Manejo de solo; Pasture; Queima; Roçagem; Soil testing; Solos; Tropical rain forest. |
|
Thesagro: |
Agronomia; Análise do Solo; Composição Química; Conservação do Solo; Floresta; Floresta Tropical Úmida; Panicum Maximum; Pastagem; Queimada. |
|
Thesaurus Nal: |
agronomy; burning; chemical composition; mineral content; pastures; soil conservation; soil management. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02914nam a2200517 a 4500
001 1331144
005 2002-11-22
008 1977 bl uuuu m 00u1 u #d
100 1 $aBAENA, A. R. C.
245 $aThe effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest.
260 $aAmes: Iowa State University$c1977
300 $a172p.
500 $aTese Mestrado.
520 $aLarge areas of rain forest in the Amazon Basin, Brazil, are being developed for pasture production. Knowledge is needed as to the effect on soil properties of changing from forest to grass. This knowledge should help in predicting the long-time productivity of the pastures. At "Fazenda Piquia" Paragominas State of Para, Brazil, soil profile samples were collected under forest, on freshly burned land and on land that had been in pasture for 2, 6, and 10 years. Pastures consist of Guinea grass (Panicum maximum). Pastures were grazed in a rotating grassing system and were burned annually. Rainfall averages 2591 mm annually with 80% of the annual total falling in the six-month period December through May. There are significant differences in soil texture and in cation exchanges capacity, the most stable of soil properties measured. These differences indicate that there are measurable differences between soils at the different sites and thus that other soil differences may be due to original soil differences as well as or in place of differences caused by treatment differences. However, all profiles are medium textured Oxisol and the exchange capacity determinations indicate that all clays are of kaolinitic types. Among surface samples all exchangeable bases measured. Ca, Mg and K, are lowest in the forest soil and are higher in the samples from the burned area and form all lthe pastures. Land that has been in pasture for 10 years has as much bases in the surface as the recently cleaned and burned land..................
650 $aagronomy
650 $aburning
650 $achemical composition
650 $amineral content
650 $apastures
650 $asoil conservation
650 $asoil management
650 $aAgronomia
650 $aAnálise do Solo
650 $aComposição Química
650 $aConservação do Solo
650 $aFloresta
650 $aFloresta Tropical Úmida
650 $aPanicum Maximum
650 $aPastagem
650 $aQueimada
653 $aBurnind
653 $aComposicao
653 $aConteúdo mineral
653 $aEfeito do fogo
653 $aFire
653 $aForest
653 $aLand clearing
653 $aManagement
653 $aManejo de pastagem
653 $aManejo de solo
653 $aPasture
653 $aQueima
653 $aRoçagem
653 $aSoil testing
653 $aSolos
653 $aTropical rain forest
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Solos (CNPS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 41 | |
| 1. |  | BAENA, A. R. C. Água no solo. Belém, PA: EMBRAPA-CPATU, 1983. 20 p. Elaborada para Curso Sobre Conservação e Manejo de Solos da Amazônia, 1983. Publicação não convencional. Mimeografado| Biblioteca(s): Embrapa Amazônia Oriental. |
|    |
| 11. | | BAENA, A. R. C. Solos para pimenta-do-reino. Belém, PA: EMBRAPA-CPATU, 1982. Não paginado. Apostila elaborada para o Curso Sobre Cultivo da Pimenta-do-reino, Belém, 1982. Publicação não convencional. Mimeografado.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 19. | | BAENA, A. R. C.; DUTRA, S. Teor de umidade em Latossolo Amarelo textura média sob diferentes tipos de cobertura utilizando-se sonda de nêutrons. In: SIMPÓSIO DO TRÓPICO ÚMIDO, 1., 1984, Belém, PA. Anais. Belém, PA: EMBRAPA-CPATU, 1986. v. 1, p. 466-473. (EMBRAPA-CPATU. Documentos, 36). v.1 Clima e solo.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| Registros recuperados : 41 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
