| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
05/12/2013 |
|
Data da última atualização: |
20/10/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
CASTRO, R. M. da S.; RUIVO, M. de L. P.; PICCININ, J. L.; RODRIGUES, E. F. |
|
Afiliação: |
ROSECÉLIA MOREIRA DA SILVA CASTRO, UFRA; MARIA DE LOURDES PINHEIRO RUIVO, MPEG; JORGE LUIZ PICCININ, MPEG; ERALDO FERREIRA RODRIGUES, CPATU. |
|
Título: |
Influence of the rainfall in the content of nutrients in litter in agroforestry systems managed with burning and without burning in Amazon. |
|
Ano de publicação: |
2013 |
|
Fonte/Imprenta: |
Agricultural Sciences, v. 4, n. 11A, p. 26-36, Nov. 2013. |
|
DOI: |
10.4236/as.2013.411A004 |
|
Idioma: |
Inglês |
|
Conteúdo: |
This study evaluated the nutrient content of the litter, testing different treatments with burning and no burning, of the vegetation, to identify which one provides better efficiency in operation and production of nutrients in different seasonal conditions. The study area is located on the property of the family farmer, initially selected by a diagnosis socioeconomic, community Benjamin Constant, in northeastern Para. Litter was collected during two periods: dry season (November) and rainy (March) in 2009. For the collection of litter samples, we used collectors measuring (0.25 × 0.25 m2), which were placed directly on the soil surface. The collected material was stored in paper bags and taken to the laboratory for Chemical Analysis of the Brazilian Agricultural Research Corporation (EMBRAPA), which was determined by analyses of macronutrients (N, P, K, Ca, Mg, Na) and micronutrients (Fe, Cu, Mn, Zn). The highest concentrations of macronutrients were found in N for agroforestry systems with and without burning in two seasons (wet and dry). All macronutrients showed influence of seasonality, which was verified by the wide variation in nutritional behavior. The decreasing concentration of nutrients was presented N > Ca > Mg > Na > K > P in agroforestry system with burning, with maximum values of all nutrients in the rainy season, and N, P, K, Ca, Na in higher concentrations in agroforestry system without burning, and showed only the Mg peak in agroforestry system with burning. The behavior of the concentration of nutrients was opposite to that observed one, for all elements analyzed showed a reduction in the concentrations of nutrients in the dry season. The decreasing concentration of nutrients was presented Fe > Mn > Zn > Cu. MenosThis study evaluated the nutrient content of the litter, testing different treatments with burning and no burning, of the vegetation, to identify which one provides better efficiency in operation and production of nutrients in different seasonal conditions. The study area is located on the property of the family farmer, initially selected by a diagnosis socioeconomic, community Benjamin Constant, in northeastern Para. Litter was collected during two periods: dry season (November) and rainy (March) in 2009. For the collection of litter samples, we used collectors measuring (0.25 × 0.25 m2), which were placed directly on the soil surface. The collected material was stored in paper bags and taken to the laboratory for Chemical Analysis of the Brazilian Agricultural Research Corporation (EMBRAPA), which was determined by analyses of macronutrients (N, P, K, Ca, Mg, Na) and micronutrients (Fe, Cu, Mn, Zn). The highest concentrations of macronutrients were found in N for agroforestry systems with and without burning in two seasons (wet and dry). All macronutrients showed influence of seasonality, which was verified by the wide variation in nutritional behavior. The decreasing concentration of nutrients was presented N > Ca > Mg > Na > K > P in agroforestry system with burning, with maximum values of all nutrients in the rainy season, and N, P, K, Ca, Na in higher concentrations in agroforestry system without burning, and showed only the Mg peak in agroforestry system with burning.... Mostrar Tudo |
|
Palavras-Chave: |
Queima; Sazonalidade; Sistema agroflorestal. |
|
Thesagro: |
Ecossistema; Floresta; Serapilheira. |
|
Thesaurus Nal: |
Amazonia. |
|
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/93545/1/ArtigoEraldo2013.pdf
|
|
Marc: |
LEADER 02563naa a2200253 a 4500
001 1972952
005 2022-10-20
008 2013 bl uuuu u00u1 u #d
024 7 $a10.4236/as.2013.411A004$2DOI
100 1 $aCASTRO, R. M. da S.
245 $aInfluence of the rainfall in the content of nutrients in litter in agroforestry systems managed with burning and without burning in Amazon.$h[electronic resource]
260 $c2013
520 $aThis study evaluated the nutrient content of the litter, testing different treatments with burning and no burning, of the vegetation, to identify which one provides better efficiency in operation and production of nutrients in different seasonal conditions. The study area is located on the property of the family farmer, initially selected by a diagnosis socioeconomic, community Benjamin Constant, in northeastern Para. Litter was collected during two periods: dry season (November) and rainy (March) in 2009. For the collection of litter samples, we used collectors measuring (0.25 × 0.25 m2), which were placed directly on the soil surface. The collected material was stored in paper bags and taken to the laboratory for Chemical Analysis of the Brazilian Agricultural Research Corporation (EMBRAPA), which was determined by analyses of macronutrients (N, P, K, Ca, Mg, Na) and micronutrients (Fe, Cu, Mn, Zn). The highest concentrations of macronutrients were found in N for agroforestry systems with and without burning in two seasons (wet and dry). All macronutrients showed influence of seasonality, which was verified by the wide variation in nutritional behavior. The decreasing concentration of nutrients was presented N > Ca > Mg > Na > K > P in agroforestry system with burning, with maximum values of all nutrients in the rainy season, and N, P, K, Ca, Na in higher concentrations in agroforestry system without burning, and showed only the Mg peak in agroforestry system with burning. The behavior of the concentration of nutrients was opposite to that observed one, for all elements analyzed showed a reduction in the concentrations of nutrients in the dry season. The decreasing concentration of nutrients was presented Fe > Mn > Zn > Cu.
650 $aAmazonia
650 $aEcossistema
650 $aFloresta
650 $aSerapilheira
653 $aQueima
653 $aSazonalidade
653 $aSistema agroflorestal
700 1 $aRUIVO, M. de L. P.
700 1 $aPICCININ, J. L.
700 1 $aRODRIGUES, E. F.
773 $tAgricultural Sciences$gv. 4, n. 11A, p. 26-36, Nov. 2013.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Unidades Centrais. |
|
Data corrente: |
01/10/1998 |
|
Data da última atualização: |
02/06/2021 |
|
Autoria: |
NOGUEIRA, S. dos S. S.; MANFREDINI, S. |
|
Título: |
Influência da compactação do solo no desenvolvimento da soja. |
|
Ano de publicação: |
1983 |
|
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 18, n. 9, p. 973-976, set. 1983. |
|
Idioma: |
Português |
|
Notas: |
Título em inglês: Influence of soil compaction on the development of soybeans. |
|
Conteúdo: |
RESUMO - Em experimento conduzido em vasos, simulou-se a existência de camada de compactação mecânica que ocorre em alguns solos argilosos cultivados com soja (Glycine max (L.)Merril). Cilindros de ferro, contendo solo compactado a três densidades diferentes (1,22, 1,44 e 1,75 g/cm³), foram colocados no terço médio dos vasos, intercalando-se duas camadas de solo com densidade original (0,90 g/cm³). Analisou-se o comportamento da variedade Santa Rosa, obtendo-se os dados de peso seco de raiz, caule, folhas e vagens, altura das plantas, número de internódios e estado nutricional. Verificou-se que a densidade de 1,75 g/cm³ impediu totalmente a penetração de raízes e que o aumento da densidade do solo induziu um maior desenvolvimento de raízes na camada superior. Na parte aérea, nenhuma diferença significativa foi observada entre os parâmetros analisados. Neste experimento, a compactação não teve efeito na produção de soja, provavelmente por causa da abundância de água e ao nível adequado de nutrientes. ABSTRACT - An attempt was made to simulate the mechanical soil layer compaction that may develop in clay soils and to study its effect on the soybean (Glycine max (L.) MerrilI) growth. The experiment was carried out in cylindrical pots filled with clay soil n such a way that the medium third was prepared at three density values (1.22, 1.44 and 1.75 g/cm³), keeping she top and bottom layers the original density (0.90 g/cm³). Soybean plants of Santa Rosa cultivqr were analyzed as to dry weight of roots, leaves, stems and pods, as well as length of stem, and number of internodes. Compaction of the middle layer at the density of 1.75 g/crn³ hindered root passage and induced a greater root development in the upper parts of the plants induced by the treatrnents. In this experiment, compaction had no effect on the soybean yield, rnost likely due to sufficiency of water and nutrients in the soil. MenosRESUMO - Em experimento conduzido em vasos, simulou-se a existência de camada de compactação mecânica que ocorre em alguns solos argilosos cultivados com soja (Glycine max (L.)Merril). Cilindros de ferro, contendo solo compactado a três densidades diferentes (1,22, 1,44 e 1,75 g/cm³), foram colocados no terço médio dos vasos, intercalando-se duas camadas de solo com densidade original (0,90 g/cm³). Analisou-se o comportamento da variedade Santa Rosa, obtendo-se os dados de peso seco de raiz, caule, folhas e vagens, altura das plantas, número de internódios e estado nutricional. Verificou-se que a densidade de 1,75 g/cm³ impediu totalmente a penetração de raízes e que o aumento da densidade do solo induziu um maior desenvolvimento de raízes na camada superior. Na parte aérea, nenhuma diferença significativa foi observada entre os parâmetros analisados. Neste experimento, a compactação não teve efeito na produção de soja, provavelmente por causa da abundância de água e ao nível adequado de nutrientes. ABSTRACT - An attempt was made to simulate the mechanical soil layer compaction that may develop in clay soils and to study its effect on the soybean (Glycine max (L.) MerrilI) growth. The experiment was carried out in cylindrical pots filled with clay soil n such a way that the medium third was prepared at three density values (1.22, 1.44 and 1.75 g/cm³), keeping she top and bottom layers the original density (0.90 g/cm³). Soybean plants of Santa Rosa cultivqr were analyzed as t... Mostrar Tudo |
|
Thesagro: |
Compactação do Solo; Glycine Max; Produção; Soja. |
|
Thesaurus NAL: |
Soil compaction; Soil density; Soybeans. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/223603/1/Influencia-compactacao-solo-1983.pdf
|
|
Marc: |
LEADER 02652naa a2200229 a 4500
001 1105061
005 2021-06-02
008 1983 bl uuuu u00u1 u #d
100 1 $aNOGUEIRA, S. dos S. S.
245 $aInfluência da compactação do solo no desenvolvimento da soja.
260 $c1983
500 $aTítulo em inglês: Influence of soil compaction on the development of soybeans.
520 $aRESUMO - Em experimento conduzido em vasos, simulou-se a existência de camada de compactação mecânica que ocorre em alguns solos argilosos cultivados com soja (Glycine max (L.)Merril). Cilindros de ferro, contendo solo compactado a três densidades diferentes (1,22, 1,44 e 1,75 g/cm³), foram colocados no terço médio dos vasos, intercalando-se duas camadas de solo com densidade original (0,90 g/cm³). Analisou-se o comportamento da variedade Santa Rosa, obtendo-se os dados de peso seco de raiz, caule, folhas e vagens, altura das plantas, número de internódios e estado nutricional. Verificou-se que a densidade de 1,75 g/cm³ impediu totalmente a penetração de raízes e que o aumento da densidade do solo induziu um maior desenvolvimento de raízes na camada superior. Na parte aérea, nenhuma diferença significativa foi observada entre os parâmetros analisados. Neste experimento, a compactação não teve efeito na produção de soja, provavelmente por causa da abundância de água e ao nível adequado de nutrientes. ABSTRACT - An attempt was made to simulate the mechanical soil layer compaction that may develop in clay soils and to study its effect on the soybean (Glycine max (L.) MerrilI) growth. The experiment was carried out in cylindrical pots filled with clay soil n such a way that the medium third was prepared at three density values (1.22, 1.44 and 1.75 g/cm³), keeping she top and bottom layers the original density (0.90 g/cm³). Soybean plants of Santa Rosa cultivqr were analyzed as to dry weight of roots, leaves, stems and pods, as well as length of stem, and number of internodes. Compaction of the middle layer at the density of 1.75 g/crn³ hindered root passage and induced a greater root development in the upper parts of the plants induced by the treatrnents. In this experiment, compaction had no effect on the soybean yield, rnost likely due to sufficiency of water and nutrients in the soil.
650 $aSoil compaction
650 $aSoil density
650 $aSoybeans
650 $aCompactação do Solo
650 $aGlycine Max
650 $aProdução
650 $aSoja
700 1 $aMANFREDINI, S.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 18, n. 9, p. 973-976, set. 1983.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
