The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest.
Autor(a) principal: | |
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Data de Publicação: | 1977 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/401751 |
Resumo: | 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 pasture. At "Fazenda Piquia" Paragominas State od Para, Brazil, soil profile samples were collected under forest, on freshly burned leand and on land that hat in pasture for 2, 6, and 10 years. Pasture consist of Guinea grass (Panicum maximum). Pastures were grazed in a rotating grassing system and were burned anuallly. Rainfall averages 2591 mm annually with 80% of the annual total falling in the six-month period december through may. There are sinificant differences in soil texture and in cation exchange capacity, the most stable of soil propertities measeured. These differences indiate that there are mesurable differences between soils at the different sites and thus that other soil diferences may be due to original soil differences as well as or in placa of differences caused by treatment differences. However, all profiles are medium textures oxisol and the exchange capacity determinations indicate that all clays are of kaoliinitic types. among samples all exchangeable bases measurder. Ca, Mg, and K, are lowest in the forest soil and are higher in the samples from the burned area from all the pastures. Land that has been in pasture for 10 years has as much bases in the surface as the recently cleaned and burned land. |
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The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest.RoçagemQueimaConteúdo mineralManejo de pastagemTropical rain forestSoil testingLand clearingManagementAnálise do SoloConservação do SoloFloresta Tropical Úmidaburningmineral contentpasturessoil conservationLarge 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 pasture. At "Fazenda Piquia" Paragominas State od Para, Brazil, soil profile samples were collected under forest, on freshly burned leand and on land that hat in pasture for 2, 6, and 10 years. Pasture consist of Guinea grass (Panicum maximum). Pastures were grazed in a rotating grassing system and were burned anuallly. Rainfall averages 2591 mm annually with 80% of the annual total falling in the six-month period december through may. There are sinificant differences in soil texture and in cation exchange capacity, the most stable of soil propertities measeured. These differences indiate that there are mesurable differences between soils at the different sites and thus that other soil diferences may be due to original soil differences as well as or in placa of differences caused by treatment differences. However, all profiles are medium textures oxisol and the exchange capacity determinations indicate that all clays are of kaoliinitic types. among samples all exchangeable bases measurder. Ca, Mg, and K, are lowest in the forest soil and are higher in the samples from the burned area from all the pastures. Land that has been in pasture for 10 years has as much bases in the surface as the recently cleaned and burned land.M.Sc. Thesis.ANTONIO RONALDO CAMACHO BAENA, CPATU.BAENA, A. R. C.2022-03-11T15:00:44Z2022-03-11T15:00:44Z1998-03-181977info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisil.172 p.Ames: Iowa State University, 1977.http://www.alice.cnptia.embrapa.br/alice/handle/doc/401751enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2022-03-11T15:00:57Zoai:www.alice.cnptia.embrapa.br:doc/401751Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542022-03-11T15:00:57falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542022-03-11T15:00:57Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest. |
title |
The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest. |
spellingShingle |
The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest. BAENA, A. R. C. Roçagem Queima Conteúdo mineral Manejo de pastagem Tropical rain forest Soil testing Land clearing Management Análise do Solo Conservação do Solo Floresta Tropical Úmida burning mineral content pastures soil conservation |
title_short |
The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest. |
title_full |
The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest. |
title_fullStr |
The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest. |
title_full_unstemmed |
The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest. |
title_sort |
The effects of pasture (Panicum maximum) on the chemical composition of the soil after clearing and burning a typical tropical highland rain forest. |
author |
BAENA, A. R. C. |
author_facet |
BAENA, A. R. C. |
author_role |
author |
dc.contributor.none.fl_str_mv |
ANTONIO RONALDO CAMACHO BAENA, CPATU. |
dc.contributor.author.fl_str_mv |
BAENA, A. R. C. |
dc.subject.por.fl_str_mv |
Roçagem Queima Conteúdo mineral Manejo de pastagem Tropical rain forest Soil testing Land clearing Management Análise do Solo Conservação do Solo Floresta Tropical Úmida burning mineral content pastures soil conservation |
topic |
Roçagem Queima Conteúdo mineral Manejo de pastagem Tropical rain forest Soil testing Land clearing Management Análise do Solo Conservação do Solo Floresta Tropical Úmida burning mineral content pastures soil conservation |
description |
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 pasture. At "Fazenda Piquia" Paragominas State od Para, Brazil, soil profile samples were collected under forest, on freshly burned leand and on land that hat in pasture for 2, 6, and 10 years. Pasture consist of Guinea grass (Panicum maximum). Pastures were grazed in a rotating grassing system and were burned anuallly. Rainfall averages 2591 mm annually with 80% of the annual total falling in the six-month period december through may. There are sinificant differences in soil texture and in cation exchange capacity, the most stable of soil propertities measeured. These differences indiate that there are mesurable differences between soils at the different sites and thus that other soil diferences may be due to original soil differences as well as or in placa of differences caused by treatment differences. However, all profiles are medium textures oxisol and the exchange capacity determinations indicate that all clays are of kaoliinitic types. among samples all exchangeable bases measurder. Ca, Mg, and K, are lowest in the forest soil and are higher in the samples from the burned area from all the pastures. Land that has been in pasture for 10 years has as much bases in the surface as the recently cleaned and burned land. |
publishDate |
1977 |
dc.date.none.fl_str_mv |
1977 1998-03-18 2022-03-11T15:00:44Z 2022-03-11T15:00:44Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Ames: Iowa State University, 1977. http://www.alice.cnptia.embrapa.br/alice/handle/doc/401751 |
identifier_str_mv |
Ames: Iowa State University, 1977. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/401751 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
il. 172 p. |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
_version_ |
1794503519630262272 |