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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
18/07/2005 |
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Data da última atualização: |
18/07/2005 |
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Autoria: |
CAMPILLO, R.; URQUIAGA, S.; UNDURRAGA, P.; PINO, I.; BODDEY, R. M. |
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Título: |
Strategies to optimise biological nitrogen fixation in legume/grass pastures in the southern region of Chile. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Plant and Soil, Dordrecht, v. 273, p. 57-67, 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
Pastures in southern Chile are composed of forage grasses and associated legumes. Apart from native grass species, in many areas perennial ryegrass (lolium perenne L.) and white clover (Trifolium repens L. ) have been introduced. It is thought that most of the N in these is derived from the symbiosis between rhizobium bacteria and the clover. However, various factors can limit the biological nitrogen fixation (BNF) potentia. Soils of chiloé (southern Chile) are derived from volcanic ash (Andisols), and show high acidity and phosphorus (P) retention capacity and there is often a low avalibility of exchangeable cations and, somential by nodulated legumes. An experiment was carried out on an Andisol of Chiloé, on a permanent pasture, to evaluate the influence of these fertility factores grass and legume productivity and on the BNF contribution to white clover. Treatments included two rates of lime (0 and 4 Mg há-1) and eight fertilisation treatments: 1. Complete (macronutrients in Kg há-1 : N-50, P2O5-180, K2O-100, MgO-70, S-50, and micronutrients); six other treatments with complete fertilisation but, respectively, without N, P, K, Mg, S and micronutrients, and a control without fertiliser application. The experiment was conducted over 2 years and soil fertility parameters, grass and clover biomass production were evaluated and the BNF contribution to the clover was estimated using 15n isotope dilution technique. Potassium was found to be the most limiting element for dry matter production, especially for the clover. Liming increased soil pH values and Ca and Mg contents, strongly reduced Al saturation and increased dry matter production. The proportional contribution of BNF to the white clover was high, reaching 80% of total N accumulated by the plants and not significantly affected by addition of lime or fertiliser. However, the accumulation of dry matter and total N, and the total N derived from BNF by the clover were over three times higher in the complete fertilisation treatments tan in the control in both years and in the limed and unlimed treatments. The results of this study indicate that pasture productivity can be improved by liming and fertilisation which favour growth of the legume and ryegrass to the detriment of the native grasses. The increased in the proportion of ryegrass and clover should result in improved quality of the available forage, and in the case of the clover, stimulates and increase in the N contribution from BNF thus dispensing with the need for N fertiliser. MenosPastures in southern Chile are composed of forage grasses and associated legumes. Apart from native grass species, in many areas perennial ryegrass (lolium perenne L.) and white clover (Trifolium repens L. ) have been introduced. It is thought that most of the N in these is derived from the symbiosis between rhizobium bacteria and the clover. However, various factors can limit the biological nitrogen fixation (BNF) potentia. Soils of chiloé (southern Chile) are derived from volcanic ash (Andisols), and show high acidity and phosphorus (P) retention capacity and there is often a low avalibility of exchangeable cations and, somential by nodulated legumes. An experiment was carried out on an Andisol of Chiloé, on a permanent pasture, to evaluate the influence of these fertility factores grass and legume productivity and on the BNF contribution to white clover. Treatments included two rates of lime (0 and 4 Mg há-1) and eight fertilisation treatments: 1. Complete (macronutrients in Kg há-1 : N-50, P2O5-180, K2O-100, MgO-70, S-50, and micronutrients); six other treatments with complete fertilisation but, respectively, without N, P, K, Mg, S and micronutrients, and a control without fertiliser application. The experiment was conducted over 2 years and soil fertility parameters, grass and clover biomass production were evaluated and the BNF contribution to the clover was estimated using 15n isotope dilution technique. Potassium was found to be the most limiting element for dry mat... Mostrar Tudo |
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Palavras-Chave: |
Biological nitrogen fixation; BNF; FBN; Fertilização; Fertilization; Fixação biológica de nitrogênio; Lime; White clover. |
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Thesagro: |
Limão; Lolium Perenne; Trevo Branco; Trifolium Repens. |
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Categoria do assunto: |
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Marc: |
LEADER 03396naa a2200313 a 4500
001 1628262
005 2005-07-18
008 2005 bl --- 0-- u #d
100 1 $aCAMPILLO, R.
245 $aStrategies to optimise biological nitrogen fixation in legume/grass pastures in the southern region of Chile.
260 $c2005
520 $aPastures in southern Chile are composed of forage grasses and associated legumes. Apart from native grass species, in many areas perennial ryegrass (lolium perenne L.) and white clover (Trifolium repens L. ) have been introduced. It is thought that most of the N in these is derived from the symbiosis between rhizobium bacteria and the clover. However, various factors can limit the biological nitrogen fixation (BNF) potentia. Soils of chiloé (southern Chile) are derived from volcanic ash (Andisols), and show high acidity and phosphorus (P) retention capacity and there is often a low avalibility of exchangeable cations and, somential by nodulated legumes. An experiment was carried out on an Andisol of Chiloé, on a permanent pasture, to evaluate the influence of these fertility factores grass and legume productivity and on the BNF contribution to white clover. Treatments included two rates of lime (0 and 4 Mg há-1) and eight fertilisation treatments: 1. Complete (macronutrients in Kg há-1 : N-50, P2O5-180, K2O-100, MgO-70, S-50, and micronutrients); six other treatments with complete fertilisation but, respectively, without N, P, K, Mg, S and micronutrients, and a control without fertiliser application. The experiment was conducted over 2 years and soil fertility parameters, grass and clover biomass production were evaluated and the BNF contribution to the clover was estimated using 15n isotope dilution technique. Potassium was found to be the most limiting element for dry matter production, especially for the clover. Liming increased soil pH values and Ca and Mg contents, strongly reduced Al saturation and increased dry matter production. The proportional contribution of BNF to the white clover was high, reaching 80% of total N accumulated by the plants and not significantly affected by addition of lime or fertiliser. However, the accumulation of dry matter and total N, and the total N derived from BNF by the clover were over three times higher in the complete fertilisation treatments tan in the control in both years and in the limed and unlimed treatments. The results of this study indicate that pasture productivity can be improved by liming and fertilisation which favour growth of the legume and ryegrass to the detriment of the native grasses. The increased in the proportion of ryegrass and clover should result in improved quality of the available forage, and in the case of the clover, stimulates and increase in the N contribution from BNF thus dispensing with the need for N fertiliser.
650 $aLimão
650 $aLolium Perenne
650 $aTrevo Branco
650 $aTrifolium Repens
653 $aBiological nitrogen fixation
653 $aBNF
653 $aFBN
653 $aFertilização
653 $aFertilization
653 $aFixação biológica de nitrogênio
653 $aLime
653 $aWhite clover
700 1 $aURQUIAGA, S.
700 1 $aUNDURRAGA, P.
700 1 $aPINO, I.
700 1 $aBODDEY, R. M.
773 $tPlant and Soil, Dordrecht$gv. 273, p. 57-67, 2005.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 727 | |
| 103. |  | TRANNIN, W. S.; URQUIAGA, S.; GUERRA, J. G. M.; IBIJBJEN, J.; CADISCH, G. Interspecies competition and N transfer in a tropical grass-legume mixture. Biology and Fertility of Soils, Berlin, v. 32, n. 6, p. 441-448, 2000.| Biblioteca(s): Embrapa Agrobiologia. |
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| 104. | | URQUIAGA, S.; RESENDE, A. S. de; ALVES. B. J. R.; BODDEY, R. M. A importancia do molibdenio na fixação biológica de nitrogenio e na nutrição nitrogenada da cultura de cana-de-açúcar. In: CONGRESSO LATINO AMERICANO DE CIENCIA DO SOLO, 13.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 1.; SIMPOSIO BRASILEIRO SOBRE MICROBIOLOGIA DO SOLO, 4., 1996, Aguas de Lindoia-SP. Resumos... Aguas de Lindoia, SP: USP / SLCS / SBCS, 1996. Comissao 4. Trabalho n.91. 1 CD-ROM.| Biblioteca(s): Embrapa Agrobiologia. |
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| 111. | | ZOTARELLi, L.; TORRES, E.; BODDEY, R. M.; URQUIAGA, S.; ALVES, B. J. R. Influence of no tillage and conventional tillage and crop rotation on soil carbon and nitrogen accumulation and soil aggregation in a rhodic ferralsol. Seropédica: Embrapa Agrobiologia, 2006. 4 p. Trabalho apresentado no 18th World Congress of Soil Science, Philadelphia, Pennsylvania, USA, 9 a 15 de julho de 2006.| Biblioteca(s): Embrapa Agrobiologia. |
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| 113. | | ZOTARELLI, L.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M.; SIX, J. Impact of tillage and crop rotation on light fraction and intra-aggregate soil organic matter in two oxisols. Soil & Tillage Research, Amsterdam, v. 95, n. 1-2, p. 196-206, sept. 2007. Parceria: Colorado State University, UFRRJ, University of California.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 116. | | INACIO, C. de T.; URQUIAGA, S.; CHALK, P. M.; MATA, M. G. F.; SOUZA, P. O. Identifying N fertilizer regime and vegetable production system in tropical Brazil using 15 N natural abundance. Journal of the Science of Food and Agriculture, London, UK, v. 95, p. 3025-3032, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agrobiologia. |
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| Registros recuperados : 727 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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