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Título: | Solubilization of Al- and Fe-phosphates by bacteria isolated from the rhizosphere of Theobroma grandiflorum (Willd. ex Spreng.) Schum. |
Autoria: | MARINO, W. T. SILVA JUNIOR, J. P. da MARSCHNER, P. LIEBEREI, R. |
Afiliação: | University of Hamburg JOSE PEREIRA DA SILVA JUNIOR, CPAA. |
Ano de publicação: | 1998 |
Referência: | In: SHIFT-WORKSHOP, 3., 1998, Manaus. Proceedings... Bonn: BMBF, 1998. |
Páginas: | p. 341-349. |
Conteúdo: | One hyndred sixty-eight bacterial isolates from the rhizoplane and rhizosphere (2mm-10mm away from the root surface) of cupuacu were isolated in spring 1997 in an experimental polyculture site (SHIFT ENV-23) near Manaus and their capacity to grow on media with poorly soluble AlPO4 was determined. 75% of the isolated bacteria were found to be effective in solubilizing hardly-soluble AlPO4 and FePO4. Two strains were selected because of their ability to solubilize high amounts (>50ug P/ml) of AlPO4 and FePO4 in former experiments. Their capacity to solubilize inorganic phosphates was investigated in liquid culture. Both strains solubilized similar amounts of P. The amount of P solubilization was highest after three days of growth while cell numbers were maximal after 13 days. During the solubilization process one strain show a decrease in pH while the other strain increased the pH. This incates that the solubilization of inorganic phosphates is not necessarily related to the acidification. |
Thesagro: | Bactéria Cultivo Multiplo Cupuaçu Rizosfera Theobroma Grandiflorum |
NAL Thesaurus: | agroforestry multiple cropping |
Palavras-chave: | Agrofloresta Brasil Amazonas Manaus |
Tipo do material: | Artigo em anais e proceedings |
Acesso: | openAccess |
Aparece nas coleções: | Artigo em anais de congresso (CPAA) |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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Shift341.pdf | 6,68 MB | Adobe PDF | Visualizar/Abrir |