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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
02/05/2014 |
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Data da última atualização: |
06/06/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AGUIAR, M. I.; FIALHO, J. S.; CAMPANHA, M. M.; OLIVEIRA, T. S. |
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Afiliação: |
MONICA MATOSO CAMPANHA, CNPMS. |
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Título: |
Carbon sequestration and nutrient reserves under different land use systems. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Revista Árvore, Viçosa, MG, v. 38, n. 1, p. 81-93, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT-This study evaluated the contribution of agroforestry (AFS) and traditional systems to carbon sequestration and nutrient reserves in plants, litter and soil. The study was carried out in the semiarid region of Brazil in a long-term experiment on an experimental farm of the goat and sheep section of the Brazilian Agricultural Research Corporation (Embrapa). Two agroforestry systems were investigated: agrosilvopastoral (ASP) and forest-pasture areas (SP) as well as traditional agriculture management (TM), two areas left fallow after TM (six fallow years - F6 and nine fallow years - F9) and one area of preserved Caatinga vegetation (CAT). Soil, litter and plants were sampled from all areas and the contents of C, N, P, K, Ca and Mg per compartment determined. The AFS (ASP and SP) had higher nutrient stocks than the traditional and intermediate stocks compared to the preserved Caatinga. In the ASP, a relevant part of the nutrients extracted by crops is returned to the system by constant inputs of litter, weeding of herbaceous vegetation and cutting of the legume crops. After fallow periods of six and nine years, carbon and nutrient stocks in the compartments soil, litter and herbaceous plants were similar to those of the preserved Caatinga (CAT), but still lower than under natural conditions in the woody vegetation. RESUMO-Objetivou-se conhecer a contribuição de sistemas agroflorestais (SAFs) e tradicionais para o sequestro de carbono e a reserva de nutrientes presentes nas plantas, serrapilheira e solo. O estudo foi realizado na região semiárida brasileira, em experimento de longa duração realizado na Fazenda Experimental da Embrapa Caprinos e Ovinos. Estudaram-se dois sistemas agroflorestais: agrossilvipastoril (ASP) e silvipastoril (SP) e um tradicional (AG), sendo também utilizadas duas áreas sob pousio após o manejo tradicional (seis anos - F6 e nove anos F9) e uma área de Caatinga conservada (CAT). Nessas áreas, foram realizadas coletas de solo, serrapilheira e plantas, sendo os teores de C, N, P, K, Ca e Mg quantificados em cada um desses compartimentos. Os SAFs (ASP e SP) apresentaram estoques de nutrientes superiores ao tradicional e intermediários em relação à Caatinga conservada. No ASP, grande parte dos nutrientes extraídos pelas colheitas volta ao sistema por meio das entradas via serrapilheira, capinas das herbáceas e poda das leguminosas. Os estoques no solo, na serrapilheira e nas plantas herbáceas após os períodos de pousio de seis e nove anos foram semelhantes à Caatinga conservada, porém os estoques do estrato arbóreo foram inferiores à condição natural. MenosABSTRACT-This study evaluated the contribution of agroforestry (AFS) and traditional systems to carbon sequestration and nutrient reserves in plants, litter and soil. The study was carried out in the semiarid region of Brazil in a long-term experiment on an experimental farm of the goat and sheep section of the Brazilian Agricultural Research Corporation (Embrapa). Two agroforestry systems were investigated: agrosilvopastoral (ASP) and forest-pasture areas (SP) as well as traditional agriculture management (TM), two areas left fallow after TM (six fallow years - F6 and nine fallow years - F9) and one area of preserved Caatinga vegetation (CAT). Soil, litter and plants were sampled from all areas and the contents of C, N, P, K, Ca and Mg per compartment determined. The AFS (ASP and SP) had higher nutrient stocks than the traditional and intermediate stocks compared to the preserved Caatinga. In the ASP, a relevant part of the nutrients extracted by crops is returned to the system by constant inputs of litter, weeding of herbaceous vegetation and cutting of the legume crops. After fallow periods of six and nine years, carbon and nutrient stocks in the compartments soil, litter and herbaceous plants were similar to those of the preserved Caatinga (CAT), but still lower than under natural conditions in the woody vegetation. RESUMO-Objetivou-se conhecer a contribuição de sistemas agroflorestais (SAFs) e tradicionais para o sequestro de carbono e a reserva de nutrientes presentes ... Mostrar Tudo |
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Palavras-Chave: |
Agroecologia; Family farming; Sistema agroflorestal. |
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Thesagro: |
Agricultura familiar; Ecologia vegetal. |
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Thesaurus Nal: |
Agroecology; Agroforestry. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/101738/1/Carbon-sequestration.pdf
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Marc: |
LEADER 03349naa a2200241 a 4500
001 1985494
005 2017-06-06
008 2014 bl uuuu u00u1 u #d
100 1 $aAGUIAR, M. I.
245 $aCarbon sequestration and nutrient reserves under different land use systems.$h[electronic resource]
260 $c2014
520 $aABSTRACT-This study evaluated the contribution of agroforestry (AFS) and traditional systems to carbon sequestration and nutrient reserves in plants, litter and soil. The study was carried out in the semiarid region of Brazil in a long-term experiment on an experimental farm of the goat and sheep section of the Brazilian Agricultural Research Corporation (Embrapa). Two agroforestry systems were investigated: agrosilvopastoral (ASP) and forest-pasture areas (SP) as well as traditional agriculture management (TM), two areas left fallow after TM (six fallow years - F6 and nine fallow years - F9) and one area of preserved Caatinga vegetation (CAT). Soil, litter and plants were sampled from all areas and the contents of C, N, P, K, Ca and Mg per compartment determined. The AFS (ASP and SP) had higher nutrient stocks than the traditional and intermediate stocks compared to the preserved Caatinga. In the ASP, a relevant part of the nutrients extracted by crops is returned to the system by constant inputs of litter, weeding of herbaceous vegetation and cutting of the legume crops. After fallow periods of six and nine years, carbon and nutrient stocks in the compartments soil, litter and herbaceous plants were similar to those of the preserved Caatinga (CAT), but still lower than under natural conditions in the woody vegetation. RESUMO-Objetivou-se conhecer a contribuição de sistemas agroflorestais (SAFs) e tradicionais para o sequestro de carbono e a reserva de nutrientes presentes nas plantas, serrapilheira e solo. O estudo foi realizado na região semiárida brasileira, em experimento de longa duração realizado na Fazenda Experimental da Embrapa Caprinos e Ovinos. Estudaram-se dois sistemas agroflorestais: agrossilvipastoril (ASP) e silvipastoril (SP) e um tradicional (AG), sendo também utilizadas duas áreas sob pousio após o manejo tradicional (seis anos - F6 e nove anos F9) e uma área de Caatinga conservada (CAT). Nessas áreas, foram realizadas coletas de solo, serrapilheira e plantas, sendo os teores de C, N, P, K, Ca e Mg quantificados em cada um desses compartimentos. Os SAFs (ASP e SP) apresentaram estoques de nutrientes superiores ao tradicional e intermediários em relação à Caatinga conservada. No ASP, grande parte dos nutrientes extraídos pelas colheitas volta ao sistema por meio das entradas via serrapilheira, capinas das herbáceas e poda das leguminosas. Os estoques no solo, na serrapilheira e nas plantas herbáceas após os períodos de pousio de seis e nove anos foram semelhantes à Caatinga conservada, porém os estoques do estrato arbóreo foram inferiores à condição natural.
650 $aAgroecology
650 $aAgroforestry
650 $aAgricultura familiar
650 $aEcologia vegetal
653 $aAgroecologia
653 $aFamily farming
653 $aSistema agroflorestal
700 1 $aFIALHO, J. S.
700 1 $aCAMPANHA, M. M.
700 1 $aOLIVEIRA, T. S.
773 $tRevista Árvore, Viçosa, MG$gv. 38, n. 1, p. 81-93, 2014.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
16/04/2008 |
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Data da última atualização: |
29/10/2008 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - A |
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Autoria: |
HOFFMAN, L. V.; BATISTA, C. E. de A.; ALMEIDA, V. C. de; BARROSO, P. A. V. |
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Afiliação: |
Lúcia Vieira Hoffman, Embrapa Algodão; Carlos Eduardo de Araújo Batista, Mestrado USP; Vanessa Cavalcante de Almeida, Bolcista do CNPq; Paulo Augusto Vianna Barroso, Embrapa Algodão. |
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Título: |
Soluble sugars and starch accumulation on cotton plant leaves affected by cotton leafroll dwarf virus. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Revista Brasileira de Oleaginosas e Fibrosas, v.11, n.3, p.139-144, set./dez. 2007. |
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Idioma: |
Português |
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Conteúdo: |
The cotton blue disease, a main cotton pest in Brazil, is caused by a luteovirus, named Cotton leafroll dwarf virus (CLRDV) or Cotton vein mosaic virus (CVMV). Symptoms include shortening of internodes and stunting. Luteoviruses have been reported to cause carbohydrates accumulation in infected plants. The aim of this research was to verify if soluble sugars and starch accumulation occurs in leaf of cotton plants infected by the virus. Leaf petioles of the cotton plants with symptoms of cotton blue disease presented greater brix values than the leaves of healthy plants. Similarly, starch content in leaves of symptomatic plants were greater than those of asymptomatic plants. This is a novel virus- host system in which carbohydrates accumulation occurs, which can help to elucidate this has a hole in plant defense against infection. |
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Palavras-Chave: |
Carbohydrate. |
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Thesagro: |
Vírus. |
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Thesaurus NAL: |
Luteovirus. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPA/21033/1/1132007003_rbof113139-1442007.pdf
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Marc: |
LEADER 01435naa a2200193 a 4500
001 1277390
005 2008-10-29
008 2007 bl uuuu u00u1 u #d
100 1 $aHOFFMAN, L. V.
245 $aSoluble sugars and starch accumulation on cotton plant leaves affected by cotton leafroll dwarf virus.
260 $c2007
520 $aThe cotton blue disease, a main cotton pest in Brazil, is caused by a luteovirus, named Cotton leafroll dwarf virus (CLRDV) or Cotton vein mosaic virus (CVMV). Symptoms include shortening of internodes and stunting. Luteoviruses have been reported to cause carbohydrates accumulation in infected plants. The aim of this research was to verify if soluble sugars and starch accumulation occurs in leaf of cotton plants infected by the virus. Leaf petioles of the cotton plants with symptoms of cotton blue disease presented greater brix values than the leaves of healthy plants. Similarly, starch content in leaves of symptomatic plants were greater than those of asymptomatic plants. This is a novel virus- host system in which carbohydrates accumulation occurs, which can help to elucidate this has a hole in plant defense against infection.
650 $aLuteovirus
650 $aVírus
653 $aCarbohydrate
700 1 $aBATISTA, C. E. de A.
700 1 $aALMEIDA, V. C. de
700 1 $aBARROSO, P. A. V.
773 $tRevista Brasileira de Oleaginosas e Fibrosas$gv.11, n.3, p.139-144, set./dez. 2007.
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Embrapa Algodão (CNPA) |
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