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| 5. |  | SANTOS, E. L. dos; BARROS, A. S. do R.; NAGASHIMA, G. T.; FERREIRA, A. A.; PRETE, C. E. C. Efeito do herbicida metsulfuron-methyl sobre o crescimento inicial de híbridos de milho. Revista Brasileira de Milho e Sorgo, Sete Lagoas, v. 8, n. 2, p. 145-156, 2010.| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 9 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
31/01/2006 |
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Data da última atualização: |
08/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SCOPEL, E.; DOUZET, J. M.; SILVA, F. A. M. da; CARDOSO, A.; MOREIRA, J. A. A.; FINDELING, A.; BERNOUX, M. |
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Afiliação: |
ERIC SCOPEL; JEAN-MARIE DOUZET; FERNANDO ANTONIO MACENA DA SILVA; ALEXANDRE CARDOSO; JOSE ALOISIO ALVES MOREIRA, CNPAF; ANTOINE FINDELING; MARTIAL BERNOUX. |
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Título: |
Impacts des systèmes de culture en semis direct avec couverture végétale (SCV) sur la dynamique de l'eau, de l'azote minéral et du carbone du sol dans les cerrados brésiliens. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Cahiers Agricultures, v. 14, n. 1, p. 71-75, jan./fév. 2005. |
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Idioma: |
Francês |
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Conteúdo: |
Under the humid tropical climate of the Brazilian cerrados, new cropping systems have become necessary to ensure sustainable agricultural production. Direct-sowing mulch-based cropping systems (DMC) introduce a cover crop before or just after the commercial crop. They help farmers enhance natural resources and produce more total biomass during the year. Crop residues protect the soil and increase organic restitution to the system. In 1999, a Franco-Brazilian collaborative project began scientific studies aimed at quantifying the impact of DMC, especially on the dynamics of water, carbon and nitrogen. DMC systems significantly decrease water runoff. In this way they effectively fight against soil erosion, even if additional infiltrated water can sometimes saturate the system and escape by drainage. The cover crop can then recycle some of that drainage loss and protect and use water resources better throughout the year. DMC systems also provide more favourable conditions that ensure the more intensive and more regular mineralisation of soil organic matter during the rainy season. Some of the organic mulch mineralises at the same time, providing the commercial crop with the benefit of a higher pool of inorganic nitrogen. The additional cover crop can recycle part of the nitrogen not used by the commercial crop and some of the nitrogen mineralised before or after this commercial cycle. Under DMC high microbial activity is responsible for higher CO2 emissions to the atmosphere, but the soil carbon balance is nonetheless positive because of the large biomass production and organic input from the introduction of the cover crop. Even under the hot and humid conditions of the cerrados, soil carbon content increases under the more productive DMC systems. MenosUnder the humid tropical climate of the Brazilian cerrados, new cropping systems have become necessary to ensure sustainable agricultural production. Direct-sowing mulch-based cropping systems (DMC) introduce a cover crop before or just after the commercial crop. They help farmers enhance natural resources and produce more total biomass during the year. Crop residues protect the soil and increase organic restitution to the system. In 1999, a Franco-Brazilian collaborative project began scientific studies aimed at quantifying the impact of DMC, especially on the dynamics of water, carbon and nitrogen. DMC systems significantly decrease water runoff. In this way they effectively fight against soil erosion, even if additional infiltrated water can sometimes saturate the system and escape by drainage. The cover crop can then recycle some of that drainage loss and protect and use water resources better throughout the year. DMC systems also provide more favourable conditions that ensure the more intensive and more regular mineralisation of soil organic matter during the rainy season. Some of the organic mulch mineralises at the same time, providing the commercial crop with the benefit of a higher pool of inorganic nitrogen. The additional cover crop can recycle part of the nitrogen not used by the commercial crop and some of the nitrogen mineralised before or after this commercial cycle. Under DMC high microbial activity is responsible for higher CO2 emissions to the atmosphere, b... Mostrar Tudo |
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Thesagro: |
Agronomia; Biomassa; Cerrado; Matéria Orgânica; Planta de Cobertura; Plantio Direto; Recurso Natural; Solo. |
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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/item/209113/1/CNPAF-2005-ce.pdf
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Marc: |
LEADER 02674naa a2200289 a 4500
001 1191642
005 2022-04-08
008 2005 bl uuuu u00u1 u #d
100 1 $aSCOPEL, E.
245 $aImpacts des systèmes de culture en semis direct avec couverture végétale (SCV) sur la dynamique de l'eau, de l'azote minéral et du carbone du sol dans les cerrados brésiliens.$h[electronic resource]
260 $c2005
520 $aUnder the humid tropical climate of the Brazilian cerrados, new cropping systems have become necessary to ensure sustainable agricultural production. Direct-sowing mulch-based cropping systems (DMC) introduce a cover crop before or just after the commercial crop. They help farmers enhance natural resources and produce more total biomass during the year. Crop residues protect the soil and increase organic restitution to the system. In 1999, a Franco-Brazilian collaborative project began scientific studies aimed at quantifying the impact of DMC, especially on the dynamics of water, carbon and nitrogen. DMC systems significantly decrease water runoff. In this way they effectively fight against soil erosion, even if additional infiltrated water can sometimes saturate the system and escape by drainage. The cover crop can then recycle some of that drainage loss and protect and use water resources better throughout the year. DMC systems also provide more favourable conditions that ensure the more intensive and more regular mineralisation of soil organic matter during the rainy season. Some of the organic mulch mineralises at the same time, providing the commercial crop with the benefit of a higher pool of inorganic nitrogen. The additional cover crop can recycle part of the nitrogen not used by the commercial crop and some of the nitrogen mineralised before or after this commercial cycle. Under DMC high microbial activity is responsible for higher CO2 emissions to the atmosphere, but the soil carbon balance is nonetheless positive because of the large biomass production and organic input from the introduction of the cover crop. Even under the hot and humid conditions of the cerrados, soil carbon content increases under the more productive DMC systems.
650 $aAgronomia
650 $aBiomassa
650 $aCerrado
650 $aMatéria Orgânica
650 $aPlanta de Cobertura
650 $aPlantio Direto
650 $aRecurso Natural
650 $aSolo
700 1 $aDOUZET, J. M.
700 1 $aSILVA, F. A. M. da
700 1 $aCARDOSO, A.
700 1 $aMOREIRA, J. A. A.
700 1 $aFINDELING, A.
700 1 $aBERNOUX, M.
773 $tCahiers Agricultures$gv. 14, n. 1, p. 71-75, jan./fév. 2005.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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