Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics.
Autor(a) principal: | |
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Data de Publicação: | 1998 |
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/402793 |
Resumo: | Shifting cultivation is the most important agricultural land-use system in the Amazon region and the slash-and-bum practice is the traditional method for land preparation used by small farmers. During slash and buming, however, high amounts of nutrients are lost through volatilization. This fact, exacerbate by reduced fallow time, decreases the total nutrient stock offallow systems and compromises the system's sustainability. The objectives of this study were: I) to evaluate the effects of fire-free land preparation on crop performance and phosphorus dynamics; 2) to evaluate the importance of the use of chemical fertilizer in systems without the use of fire and 3) to select rice, maize, cowpea and cassava cultivars suitable for mulch systems. The studies were conducted in the community of Cumaru in the municipality of Igarapé Açu (Pará, Brazil) on two neighboring sites with 4-year-old (FV4y) and 10-year-old fallow vegetation (FVIOy). Three treatments for land preparation were tested with and without fertilizer. The treatments were: I) buming ± NPK fertilization; 2) mulching ± NPK fertilization; 3) incorporation of the fallow vegetation biomass into the soil ± NPK fertilization. Rice was planted followed by cowpea and cassava in two consecutive cropping periods. Yield characteristics of the crops as well as the phosphorus dynamics in the soil and uptake by the crops were evaluated. Furthermore, screening experiments were set up to evaluate the yield characteristics of a total of 8 rice, 18 maize, 21 cowpea and 5 cassava cultivars under mulch conditions with and without fertilizer application... |
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Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics.Igarapé-AçuParáBrasilPhosphate fertilizersCowpeaMaizeArrozCobertura MortaFeijãoFertilizante FosfatadoFósforoMandiocaMatéria OrgânicaMilhoVegetação SecundáriaAmazoniacassavaorganic matterphosphorusricevegetationShifting cultivation is the most important agricultural land-use system in the Amazon region and the slash-and-bum practice is the traditional method for land preparation used by small farmers. During slash and buming, however, high amounts of nutrients are lost through volatilization. This fact, exacerbate by reduced fallow time, decreases the total nutrient stock offallow systems and compromises the system's sustainability. The objectives of this study were: I) to evaluate the effects of fire-free land preparation on crop performance and phosphorus dynamics; 2) to evaluate the importance of the use of chemical fertilizer in systems without the use of fire and 3) to select rice, maize, cowpea and cassava cultivars suitable for mulch systems. The studies were conducted in the community of Cumaru in the municipality of Igarapé Açu (Pará, Brazil) on two neighboring sites with 4-year-old (FV4y) and 10-year-old fallow vegetation (FVIOy). Three treatments for land preparation were tested with and without fertilizer. The treatments were: I) buming ± NPK fertilization; 2) mulching ± NPK fertilization; 3) incorporation of the fallow vegetation biomass into the soil ± NPK fertilization. Rice was planted followed by cowpea and cassava in two consecutive cropping periods. Yield characteristics of the crops as well as the phosphorus dynamics in the soil and uptake by the crops were evaluated. Furthermore, screening experiments were set up to evaluate the yield characteristics of a total of 8 rice, 18 maize, 21 cowpea and 5 cassava cultivars under mulch conditions with and without fertilizer application...Doctoral Dissertation (Doctor of Agricultural Sciences) - George-August-University Göttingen, Göttingen.MARIA DO SOCORRO ANDRADE KATO, CPATU.KATO, M. do S. A.2023-05-10T18:47:42Z2023-05-10T18:47:42Z1999-06-041998info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis144 p.1998.3-89712-347-9http://www.alice.cnptia.embrapa.br/alice/handle/doc/402793enginfo: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:EMBRAPA2023-05-10T18:47:42Zoai:www.alice.cnptia.embrapa.br:doc/402793Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542023-05-10T18:47:42falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542023-05-10T18:47:42Repositório 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 |
Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics. |
title |
Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics. |
spellingShingle |
Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics. KATO, M. do S. A. Igarapé-Açu Pará Brasil Phosphate fertilizers Cowpea Maize Arroz Cobertura Morta Feijão Fertilizante Fosfatado Fósforo Mandioca Matéria Orgânica Milho Vegetação Secundária Amazonia cassava organic matter phosphorus rice vegetation |
title_short |
Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics. |
title_full |
Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics. |
title_fullStr |
Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics. |
title_full_unstemmed |
Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics. |
title_sort |
Fire-free land preparation as an alternative to slash-and-burn agriculture in the bragantina region, eastern Amazon: crop performance and phosphorus dynamics. |
author |
KATO, M. do S. A. |
author_facet |
KATO, M. do S. A. |
author_role |
author |
dc.contributor.none.fl_str_mv |
MARIA DO SOCORRO ANDRADE KATO, CPATU. |
dc.contributor.author.fl_str_mv |
KATO, M. do S. A. |
dc.subject.por.fl_str_mv |
Igarapé-Açu Pará Brasil Phosphate fertilizers Cowpea Maize Arroz Cobertura Morta Feijão Fertilizante Fosfatado Fósforo Mandioca Matéria Orgânica Milho Vegetação Secundária Amazonia cassava organic matter phosphorus rice vegetation |
topic |
Igarapé-Açu Pará Brasil Phosphate fertilizers Cowpea Maize Arroz Cobertura Morta Feijão Fertilizante Fosfatado Fósforo Mandioca Matéria Orgânica Milho Vegetação Secundária Amazonia cassava organic matter phosphorus rice vegetation |
description |
Shifting cultivation is the most important agricultural land-use system in the Amazon region and the slash-and-bum practice is the traditional method for land preparation used by small farmers. During slash and buming, however, high amounts of nutrients are lost through volatilization. This fact, exacerbate by reduced fallow time, decreases the total nutrient stock offallow systems and compromises the system's sustainability. The objectives of this study were: I) to evaluate the effects of fire-free land preparation on crop performance and phosphorus dynamics; 2) to evaluate the importance of the use of chemical fertilizer in systems without the use of fire and 3) to select rice, maize, cowpea and cassava cultivars suitable for mulch systems. The studies were conducted in the community of Cumaru in the municipality of Igarapé Açu (Pará, Brazil) on two neighboring sites with 4-year-old (FV4y) and 10-year-old fallow vegetation (FVIOy). Three treatments for land preparation were tested with and without fertilizer. The treatments were: I) buming ± NPK fertilization; 2) mulching ± NPK fertilization; 3) incorporation of the fallow vegetation biomass into the soil ± NPK fertilization. Rice was planted followed by cowpea and cassava in two consecutive cropping periods. Yield characteristics of the crops as well as the phosphorus dynamics in the soil and uptake by the crops were evaluated. Furthermore, screening experiments were set up to evaluate the yield characteristics of a total of 8 rice, 18 maize, 21 cowpea and 5 cassava cultivars under mulch conditions with and without fertilizer application... |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998 1999-06-04 2023-05-10T18:47:42Z 2023-05-10T18:47:42Z |
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 |
1998. 3-89712-347-9 http://www.alice.cnptia.embrapa.br/alice/handle/doc/402793 |
identifier_str_mv |
1998. 3-89712-347-9 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/402793 |
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 |
144 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 |
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1794503544609439744 |