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| 1. |  | FARIAS, A. X.; ROBBS, C. F.; SILVA, O. F.; AFFONSO, B. R.; CORREA, T. B. S. Micotoxinas e microbiota fungica em milho pos-colheita comercializados no Brasil. In: CONGRESSO NACIONAL DE MILHO E SORGO, 21., 1996, Londrina, PR. Resumos... Londrina: IAPAR, 1996. p. 293.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 4. | | PRADO, G.; OLIVEIRA, M. S.; FERREIRA, S. O.; CORREA, T. B. S.; AFFONSO, B. R. R. Ocorrencia natural de desoxinivalenol e toxina T-2 em milho pos-colheita, safra 1996. In: CONGRESSO BRASILEIRO DE CIENCIA E TECNOLOGIA DE ALIMENTOS, 16., 1998, Rio de Janeiro, RJ. Anais... Rio de Janeiro: SBCTA, 1998. v.2, p. 955-957.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 5. | | CORREA, T. B. S.; AFFONSO, B. R.; FARIAS, A. X.; ROBBS, C. F.; PRADO, G. Deteccao e quantificacao de micotoxinas sintetizadas por Fusarium spp. em milho produzido no estado do Parana. In: CONGRESSO BRASILEIRO DE CIENCIA E TECNOLOGIA DE ALIMENTOS, 15., 1996, Pocos de Caldas, MG. Resumos... Pocos de Caldas: SBCTA, 1996. p. 81, ref. 220.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
09/11/2001 |
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Data da última atualização: |
09/11/2001 |
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Autoria: |
RAMOS, M. G.; VILLATORO, M. A. A.; URQUIAGA, S.; ALVES, B. J. R.; BODDEY, R. M. |
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Título: |
Quantification of the contribution of biological nitrogen fixation to tropical green manure crops and the residual benefit to a subsequent maize crop using 15N-isotope techniques. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Journal of Biotechnology, v. 91, p. 105-115, 2001. |
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Idioma: |
Inglês |
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Conteúdo: |
In this study the contribution of biological N2 fixation (BNF) to leguminous green manures was quantified in the field at different sites with different 15N methodologies. In the first experiment, conducted on a Terra Roxa soil in Cuba, the BNF contribution to three legumes (Crotalaria juncea, Mucuna aterrima and Canavalia ensiformis) was quantified by applying 15N-labelled ammonium sulphate to the soil. The second experiment was planted in a very low fertility sandy soil near Rio de Janeiro, and the 15N natural abundance technique was applied to quantify BNF in C. juncea, M. niveum and soybean. In both studies the advantages of using several non-N2-fixing reference plants was apparent and despite the much greater accumulation of the C. juncea in the experiment performed on the fertile soil of Cuba, the above ground contributions of BNF at both sites were similar (40-80 kg N ha-1) and greater than for the other legumes. In a further experiment the possible contribution of root-derived N to the soil/plant system of two of the legumes was quantified using a 15N-leaf-labelling technique performed in pots. The results of this study suggested that total below-ground N could constitute as much as 39 to 49% of the total N accumulated by the legume crops. |
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Palavras-Chave: |
BNF; FBN; Fixação biologica de nitrogênio; Maize; Nitrogen fixing bacteria; Tropical legumes. |
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Thesagro: |
Adubação Verde; Leguminosa Tropical; Milho; Raiz; Soja. |
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Thesaurus NAL: |
green manures; roots; soybeans. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02243naa a2200337 a 4500
001 1621282
005 2001-11-09
008 2001 bl --- 0-- u #d
100 1 $aRAMOS, M. G.
245 $aQuantification of the contribution of biological nitrogen fixation to tropical green manure crops and the residual benefit to a subsequent maize crop using 15N-isotope techniques.
260 $c2001
520 $aIn this study the contribution of biological N2 fixation (BNF) to leguminous green manures was quantified in the field at different sites with different 15N methodologies. In the first experiment, conducted on a Terra Roxa soil in Cuba, the BNF contribution to three legumes (Crotalaria juncea, Mucuna aterrima and Canavalia ensiformis) was quantified by applying 15N-labelled ammonium sulphate to the soil. The second experiment was planted in a very low fertility sandy soil near Rio de Janeiro, and the 15N natural abundance technique was applied to quantify BNF in C. juncea, M. niveum and soybean. In both studies the advantages of using several non-N2-fixing reference plants was apparent and despite the much greater accumulation of the C. juncea in the experiment performed on the fertile soil of Cuba, the above ground contributions of BNF at both sites were similar (40-80 kg N ha-1) and greater than for the other legumes. In a further experiment the possible contribution of root-derived N to the soil/plant system of two of the legumes was quantified using a 15N-leaf-labelling technique performed in pots. The results of this study suggested that total below-ground N could constitute as much as 39 to 49% of the total N accumulated by the legume crops.
650 $agreen manures
650 $aroots
650 $asoybeans
650 $aAdubação Verde
650 $aLeguminosa Tropical
650 $aMilho
650 $aRaiz
650 $aSoja
653 $aBNF
653 $aFBN
653 $aFixação biologica de nitrogênio
653 $aMaize
653 $aNitrogen fixing bacteria
653 $aTropical legumes
700 1 $aVILLATORO, M. A. A.
700 1 $aURQUIAGA, S.
700 1 $aALVES, B. J. R.
700 1 $aBODDEY, R. M.
773 $tJournal of Biotechnology$gv. 91, p. 105-115, 2001.
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