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Registro Completo |
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Biblioteca(s): |
Embrapa Uva e Vinho. |
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Data corrente: |
20/08/2009 |
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Data da última atualização: |
17/09/2019 |
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Autoria: |
GOVAERTS, B.; VERHULST, N.; CASTELLANOS-NAVARRETE, A.; SAYRE, K. D.; DIXON, J.; DENDOOVEN, L. |
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Título: |
Conservation agriculture and soil carbon sequestration: between myth and farmer reality. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Critical Review in Plant Science, Philadelphia, v. 28, n. 3, p. 97-122, 2009. |
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Volume: |
28 |
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Páginas: |
97-122 |
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Idioma: |
Inglês |
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Conteúdo: |
Improving food security, environmental preservation and enhancing livelihood should be the main targets of the innovators of today's farming systems. Conservation agriculture (CA), based on minimum tillage, crop residue retention, and crop rotations, has been proposed as an alternative system combining benefits for the farmer with advantages for the society. This paper reviews the potential impact of CA on C sequestration by synthesizing the knowledge of carbon and nitrogen cycling in agriculture; summarizing the influence of tillage, residue management, and crop rotation on soil organic carbon stocks; and compiling the existing case study information. To evaluate the C sequestration capacity of farming practices, their influence on emissions from farming activities should be considered together with their influence on soil C stocks. The largest contribution of CA to reducing emissions from farming activities is made by the reduction of tillage operations. The soil C case study results are not conclusive. In 7 of the 78 cases withheld, the soil C stock was lower in zero compared to conventional tillage, in 40 cases it was higher, and in 31 of the cases there was no significant difference. The mechanisms that govern the balance between increased or no sequestration after conversion to zero tillage are not clear, although some factors that play a role can be distinguished, e.g., root development and rhizodeposits, baseline soil C content, bulk density and porosity, climate, landscape position, and erosion/deposition history. Altering crop rotation can influence soil C stocks by changing quantity and quality of organic matter input. More research is needed, especially in the tropical areas where good quantitative information is lacking. However, even if C sequestration is questionable in some areas and cropping systems, CA remains an important technology that improves soil processes, controls soil erosion and reduces production cost. MenosImproving food security, environmental preservation and enhancing livelihood should be the main targets of the innovators of today's farming systems. Conservation agriculture (CA), based on minimum tillage, crop residue retention, and crop rotations, has been proposed as an alternative system combining benefits for the farmer with advantages for the society. This paper reviews the potential impact of CA on C sequestration by synthesizing the knowledge of carbon and nitrogen cycling in agriculture; summarizing the influence of tillage, residue management, and crop rotation on soil organic carbon stocks; and compiling the existing case study information. To evaluate the C sequestration capacity of farming practices, their influence on emissions from farming activities should be considered together with their influence on soil C stocks. The largest contribution of CA to reducing emissions from farming activities is made by the reduction of tillage operations. The soil C case study results are not conclusive. In 7 of the 78 cases withheld, the soil C stock was lower in zero compared to conventional tillage, in 40 cases it was higher, and in 31 of the cases there was no significant difference. The mechanisms that govern the balance between increased or no sequestration after conversion to zero tillage are not clear, although some factors that play a role can be distinguished, e.g., root development and rhizodeposits, baseline soil C content, bulk density and porosity, climate, la... Mostrar Tudo |
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Palavras-Chave: |
CO2; Sequestro. |
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Thesagro: |
Agricultura; Carbono; Planta; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02718naa a2200277 a 4500
001 1544113
005 2019-09-17
008 2009 bl uuuu u00u1 u #d
100 1 $aGOVAERTS, B.
245 $aConservation agriculture and soil carbon sequestration$bbetween myth and farmer reality.$h[electronic resource]
260 $c2009
300 $a97-122 28
490 $v28
520 $aImproving food security, environmental preservation and enhancing livelihood should be the main targets of the innovators of today's farming systems. Conservation agriculture (CA), based on minimum tillage, crop residue retention, and crop rotations, has been proposed as an alternative system combining benefits for the farmer with advantages for the society. This paper reviews the potential impact of CA on C sequestration by synthesizing the knowledge of carbon and nitrogen cycling in agriculture; summarizing the influence of tillage, residue management, and crop rotation on soil organic carbon stocks; and compiling the existing case study information. To evaluate the C sequestration capacity of farming practices, their influence on emissions from farming activities should be considered together with their influence on soil C stocks. The largest contribution of CA to reducing emissions from farming activities is made by the reduction of tillage operations. The soil C case study results are not conclusive. In 7 of the 78 cases withheld, the soil C stock was lower in zero compared to conventional tillage, in 40 cases it was higher, and in 31 of the cases there was no significant difference. The mechanisms that govern the balance between increased or no sequestration after conversion to zero tillage are not clear, although some factors that play a role can be distinguished, e.g., root development and rhizodeposits, baseline soil C content, bulk density and porosity, climate, landscape position, and erosion/deposition history. Altering crop rotation can influence soil C stocks by changing quantity and quality of organic matter input. More research is needed, especially in the tropical areas where good quantitative information is lacking. However, even if C sequestration is questionable in some areas and cropping systems, CA remains an important technology that improves soil processes, controls soil erosion and reduces production cost.
650 $aAgricultura
650 $aCarbono
650 $aPlanta
650 $aSolo
653 $aCO2
653 $aSequestro
700 1 $aVERHULST, N.
700 1 $aCASTELLANOS-NAVARRETE, A.
700 1 $aSAYRE, K. D.
700 1 $aDIXON, J.
700 1 $aDENDOOVEN, L.
773 $tCritical Review in Plant Science, Philadelphia$gv. 28, n. 3, p. 97-122, 2009.
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Embrapa Uva e Vinho (CNPUV) |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
03/02/2022 |
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Data da última atualização: |
10/05/2022 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
NASCIMENTO, J. P. B.; DANTAS, B. F. |
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Afiliação: |
JOANA PAULA BISPO NASCIMENTO, Universidade Federal de Sergipe, São Cristovão, SE; BARBARA FRANCA DANTAS, CPATSA. |
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Título: |
Angico-de-bezerro Pityrocarpa moniliformis (Benth.) Luckow & R.W. Jobson. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Informativo Abrates, v. 29, n. 1/3, p. 39-41, 2019. |
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Idioma: |
Português |
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Notas: |
Edição Especial do 21 Congresso Brasileiro de Sementes, Curitiba, set. 2020. |
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Conteúdo: |
O angico-de-bezerro (Pityrocarpa moniliformis (Benth.) Luckow & R.W. Jobson), também conhecido como rama-debezerro e catanduva, é pertencente à família Fabaceae e tem como sinonímia científica Piptadenia moniliformis Benth. (Morim, 2015). |
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Palavras-Chave: |
Angico de bezerro; Biologia Reprodutiva; Bioma Caatinga. |
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Thesagro: |
Espécie Nativa; Fenologia; Germinação; Semente. |
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Thesaurus NAL: |
Pityrocarpa moniliformis. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1139623/1/Nota-tecnica-08-Angico-de-bezerro.pdf
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Marc: |
LEADER 01001naa a2200241 a 4500
001 2139623
005 2022-05-10
008 2019 bl uuuu u00u1 u #d
100 1 $aNASCIMENTO, J. P. B.
245 $aAngico-de-bezerro Pityrocarpa moniliformis (Benth.) Luckow & R.W. Jobson.$h[electronic resource]
260 $c2019
500 $aEdição Especial do 21 Congresso Brasileiro de Sementes, Curitiba, set. 2020.
520 $aO angico-de-bezerro (Pityrocarpa moniliformis (Benth.) Luckow & R.W. Jobson), também conhecido como rama-debezerro e catanduva, é pertencente à família Fabaceae e tem como sinonímia científica Piptadenia moniliformis Benth. (Morim, 2015).
650 $aPityrocarpa moniliformis
650 $aEspécie Nativa
650 $aFenologia
650 $aGerminação
650 $aSemente
653 $aAngico de bezerro
653 $aBiologia Reprodutiva
653 $aBioma Caatinga
700 1 $aDANTAS, B. F.
773 $tInformativo Abrates$gv. 29, n. 1/3, p. 39-41, 2019.
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