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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Corte; Embrapa Gado de Leite. |
Data corrente: |
07/07/1992 |
Data da última atualização: |
15/01/2014 |
Autoria: |
PICCININI, R. S. |
Título: |
The use of diphenadione (2-diphenylacetyl - 1,3 indandione) for vampire bat control in endemic rabies areas, northeastern Brazil. |
Ano de publicação: |
1977 |
Fonte/Imprenta: |
Davis: University of California, 1977. |
Páginas: |
63p. |
Idioma: |
Inglês Português |
Notas: |
Tese Mestrado. |
Conteúdo: |
Morcego hematofago; Controle; Anticoagulante; Difenadione; Brasil; Nordeste; Raiva; Doenca; Controle; Anticoagulante; Sanidade; Animal. |
Palavras-Chave: |
Avaliacao; Controle; Eficiencia; Estrategias; Metodos; Predicao; Vampiros. |
Thesagro: |
Estatística; Raiva; Zoologia. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00815nam a2200253 a 4500 001 1320050 005 2014-01-15 008 1977 bl uuuu m 00u1 u #d 100 1 $aPICCININI, R. S. 245 $aThe use of diphenadione (2-diphenylacetyl - 1,3 indandione) for vampire bat control in endemic rabies areas, northeastern Brazil. 260 $aDavis: University of California$c1977 300 $a63p. 500 $aTese Mestrado. 520 $aMorcego hematofago; Controle; Anticoagulante; Difenadione; Brasil; Nordeste; Raiva; Doenca; Controle; Anticoagulante; Sanidade; Animal. 650 $aEstatística 650 $aRaiva 650 $aZoologia 653 $aAvaliacao 653 $aControle 653 $aEficiencia 653 $aEstrategias 653 $aMetodos 653 $aPredicao 653 $aVampiros
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Embrapa Gado de Corte (CNPGC) |
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Registro Completo
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
27/12/2000 |
Data da última atualização: |
27/12/2000 |
Autoria: |
TRANNIN, W. S.; URQUIAGA, S.; GUERRA, J. G. M.; IBIJBJEN, J.; CADISCH, G. |
Título: |
Interspecies competition and N transfer in a tropical grass-legume mixture. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
Biology and Fertility of Soils, Berlin, v. 32, n. 6, p. 441-448, 2000. |
Idioma: |
Inglês |
Conteúdo: |
Competitiveness of Brachiaria decumbens cv. Basilisk and Stylosanthes guianensis cv. Minerão was investigated either without root restriction or by separating their root systems with a fine mesh or a solid barrier in the presence or absence of mycorrhiza ( Glomus clarum ). Nitrogen transfer between the legume and the grass was assessed with the 15N isotope dilution technique using a relatively stable 15N-enriched soil derived from a long-term labelling experiment. During establishment, legume development was severely restricted by competition from the grass in pots without a root barrier. However, as the system became N limited, the legume became dominant due to its access to atmospheric N2 which contributed over 80% of the legume N requirements. S. guianensis was highly mycotrophic and inoculation with mycorrhiza favoured rapid establishment even in the treatments with no root barrier. Only in the presence of root barriers, either a mesh or a complete compartment separation, was the proportion of N derived from N2 fixation positively affected by the presence of the fungus. No significant direct belowground N transfer from legume to grass was observed during the lifetime of the legume suggesting that the legume maintains a highly efficient recycling under N-limited conditions. However, after cutting the shoot at ground leveI, the grass assimilated significant amounts of N de- rived from decaying legume roots. We conclude that the main pathway of belowground N transfer from S. guianensis to associated B. decumbens occurred via de- composing roots rather than via root exudates or direct mycorrhizal hyphae transfer. MenosCompetitiveness of Brachiaria decumbens cv. Basilisk and Stylosanthes guianensis cv. Minerão was investigated either without root restriction or by separating their root systems with a fine mesh or a solid barrier in the presence or absence of mycorrhiza ( Glomus clarum ). Nitrogen transfer between the legume and the grass was assessed with the 15N isotope dilution technique using a relatively stable 15N-enriched soil derived from a long-term labelling experiment. During establishment, legume development was severely restricted by competition from the grass in pots without a root barrier. However, as the system became N limited, the legume became dominant due to its access to atmospheric N2 which contributed over 80% of the legume N requirements. S. guianensis was highly mycotrophic and inoculation with mycorrhiza favoured rapid establishment even in the treatments with no root barrier. Only in the presence of root barriers, either a mesh or a complete compartment separation, was the proportion of N derived from N2 fixation positively affected by the presence of the fungus. No significant direct belowground N transfer from legume to grass was observed during the lifetime of the legume suggesting that the legume maintains a highly efficient recycling under N-limited conditions. However, after cutting the shoot at ground leveI, the grass assimilated significant amounts of N de- rived from decaying legume roots. We conclude that the main pathway of belowground N transfer from ... Mostrar Tudo |
Palavras-Chave: |
Arbuscular mycorrhizae vesicular; Biological nitrogen fixation; BNF; FBN; Fixação biológica de nitrogênio. |
Thesagro: |
Brachiaria Decumbens; Micorriza Vesicular Arbuscular; Stylosanthes Guianensis. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02441naa a2200265 a 4500 001 1597294 005 2000-12-27 008 2000 bl --- 0-- u #d 100 1 $aTRANNIN, W. S. 245 $aInterspecies competition and N transfer in a tropical grass-legume mixture. 260 $c2000 520 $aCompetitiveness of Brachiaria decumbens cv. Basilisk and Stylosanthes guianensis cv. Minerão was investigated either without root restriction or by separating their root systems with a fine mesh or a solid barrier in the presence or absence of mycorrhiza ( Glomus clarum ). Nitrogen transfer between the legume and the grass was assessed with the 15N isotope dilution technique using a relatively stable 15N-enriched soil derived from a long-term labelling experiment. During establishment, legume development was severely restricted by competition from the grass in pots without a root barrier. However, as the system became N limited, the legume became dominant due to its access to atmospheric N2 which contributed over 80% of the legume N requirements. S. guianensis was highly mycotrophic and inoculation with mycorrhiza favoured rapid establishment even in the treatments with no root barrier. Only in the presence of root barriers, either a mesh or a complete compartment separation, was the proportion of N derived from N2 fixation positively affected by the presence of the fungus. No significant direct belowground N transfer from legume to grass was observed during the lifetime of the legume suggesting that the legume maintains a highly efficient recycling under N-limited conditions. However, after cutting the shoot at ground leveI, the grass assimilated significant amounts of N de- rived from decaying legume roots. We conclude that the main pathway of belowground N transfer from S. guianensis to associated B. decumbens occurred via de- composing roots rather than via root exudates or direct mycorrhizal hyphae transfer. 650 $aBrachiaria Decumbens 650 $aMicorriza Vesicular Arbuscular 650 $aStylosanthes Guianensis 653 $aArbuscular mycorrhizae vesicular 653 $aBiological nitrogen fixation 653 $aBNF 653 $aFBN 653 $aFixação biológica de nitrogênio 700 1 $aURQUIAGA, S. 700 1 $aGUERRA, J. G. M. 700 1 $aIBIJBJEN, J. 700 1 $aCADISCH, G. 773 $tBiology and Fertility of Soils, Berlin$gv. 32, n. 6, p. 441-448, 2000.
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