| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Solos. |
|
Data corrente: |
22/11/2002 |
|
Data da última atualização: |
22/11/2002 |
|
Autoria: |
MACHADO, P. L. O. de A. |
|
Afiliação: |
EMBRAPA-CNPS, Rio de Janeiro, RJ. |
|
Título: |
Einfluss von humus und basischen kationen auf die aluminium-toxizitat bei ausgewahlten landwirtschaftlichen kulturpflanzen. [Influence of the soil organic matter and basic cations on the aluminium-toxicity to some selected crop plants]. |
|
Ano de publicação: |
1993 |
|
Fonte/Imprenta: |
Wien : Universitat fur Bodenkultur Wien, 1993. |
|
Páginas: |
100p. |
|
Idioma: |
Alemão |
|
Notas: |
Tese Doutorado. Contem resumo e titulo em ingles: Influence of the soil organic matter and basic cations on the aluminium-toxicity to some selected crop plants. |
|
Conteúdo: |
Soil acidity is a process which leads to leaching of important plant mineral nutrients from de root zone. Paralell to nutrient deficiency there is an increase of Al- concentration in the soil solution restricting crop growth. In spite of the fact that liming acid soils is often not feasible, it is still considered to be an efficient measure. hence, aluminium- tolerant plants seem to be a propitius solution to soil Al- toxicity. Improvement of the soil humus status could be a further alternative for long-term neutralization of Al- toxicity. This is of utmost importance considering the fact that the quality and quantity of the soil organic matter can locally be improved through crop rotation and green manuring. In order to identify basic influences of organic matter on Al- toxicity to maize a sand culture experiment was conducted with four Al- treatments (0, 25, 50 and 75 mg Al/L) combined with four levels of peat mixed to the sand (0.0, 0.5, 1.5, and 3.0% peat). Increasing Al- concentrations in the nutrient solution in most cases resulted in a significant growth reduction of shoots and roots. Peat treatments clearly diminished these Al- toxicity effects. Al- concentrations in shoots were hardly influenced by various treatments. Al- contents in maize roots were augmented more than tenfolds with increasing Al- concentration of the nutrient solution in peat free treatments. MenosSoil acidity is a process which leads to leaching of important plant mineral nutrients from de root zone. Paralell to nutrient deficiency there is an increase of Al- concentration in the soil solution restricting crop growth. In spite of the fact that liming acid soils is often not feasible, it is still considered to be an efficient measure. hence, aluminium- tolerant plants seem to be a propitius solution to soil Al- toxicity. Improvement of the soil humus status could be a further alternative for long-term neutralization of Al- toxicity. This is of utmost importance considering the fact that the quality and quantity of the soil organic matter can locally be improved through crop rotation and green manuring. In order to identify basic influences of organic matter on Al- toxicity to maize a sand culture experiment was conducted with four Al- treatments (0, 25, 50 and 75 mg Al/L) combined with four levels of peat mixed to the sand (0.0, 0.5, 1.5, and 3.0% peat). Increasing Al- concentrations in the nutrient solution in most cases resulted in a significant growth reduction of shoots and roots. Peat treatments clearly diminished these Al- toxicity effects. Al- concentrations in shoots were hardly influenced by various treatments. Al- contents in maize roots were augmented more than tenfolds with increasing Al- concentration of the nutrient... Mostrar Tudo |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02227nam a2200133 a 4500
001 1330441
005 2002-11-22
008 1993 bl uuuu m 00u1 u #d
100 1 $aMACHADO, P. L. O. de A.
245 $aEinfluss von humus und basischen kationen auf die aluminium-toxizitat bei ausgewahlten landwirtschaftlichen kulturpflanzen. [Influence of the soil organic matter and basic cations on the aluminium-toxicity to some selected crop plants].
260 $aWien : Universitat fur Bodenkultur Wien$c1993
300 $a100p.
500 $aTese Doutorado. Contem resumo e titulo em ingles: Influence of the soil organic matter and basic cations on the aluminium-toxicity to some selected crop plants.
520 $aSoil acidity is a process which leads to leaching of important plant mineral nutrients from de root zone. Paralell to nutrient deficiency there is an increase of Al- concentration in the soil solution restricting crop growth. In spite of the fact that liming acid soils is often not feasible, it is still considered to be an efficient measure. hence, aluminium- tolerant plants seem to be a propitius solution to soil Al- toxicity. Improvement of the soil humus status could be a further alternative for long-term neutralization of Al- toxicity. This is of utmost importance considering the fact that the quality and quantity of the soil organic matter can locally be improved through crop rotation and green manuring. In order to identify basic influences of organic matter on Al- toxicity to maize a sand culture experiment was conducted with four Al- treatments (0, 25, 50 and 75 mg Al/L) combined with four levels of peat mixed to the sand (0.0, 0.5, 1.5, and 3.0% peat). Increasing Al- concentrations in the nutrient solution in most cases resulted in a significant growth reduction of shoots and roots. Peat treatments clearly diminished these Al- toxicity effects. Al- concentrations in shoots were hardly influenced by various treatments. Al- contents in maize roots were augmented more than tenfolds with increasing Al- concentration of the nutrient solution in peat free treatments.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Solos (CNPS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 190 | |
| 6. |  | MACHADO, P. L. O. de A. Monitoring and assessment of sustainable land management: overview of issues. In: WINSLOW, M.; SOMMER, S.; BIGAS, H.; MARTIUS, C.; VOGT, J.; AKHTAR-SCHUSTER, M.; THOMAS, R. (Ed.). Understanding desertification and land degradation trends. Luxembourg: European Commission Joint Research Centre, 2011. Proceedings of the UNCCD First Scientific Conference, 22-24 September 2009, during the UNCCD Ninth Conference of Parties, Buenos Aires, Argentina.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
|    |
| Registros recuperados : 190 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
