Data/hora: 19/06/2024 04:26:45

Biblioteca(s): | Embrapa Amazônia Ocidental.
Tipo da produção científica: | Artigo em Anais de Congresso
Data corrente: | 29/09/1999
Data da última atualização: | 13/08/2018
Autoria: | MARINO, W. T.; SILVA JUNIOR, J. P. da; MARSCHNER, P.; LIEBEREI, R.
Afiliação: | University of Hamburg; JOSE PEREIRA DA SILVA JUNIOR, CPAA.
Título: | Solubilization of Al- and Fe-phosphates by bacteria isolated from the rhizosphere of Theobroma grandiflorum (Willd. ex Spreng.) Schum.
Ano de publicação: | 1998
Fonte/Imprenta: | In: SHIFT-WORKSHOP, 3., 1998, Manaus. Proceedings... Bonn: BMBF, 1998.
Páginas: | p. 341-349.
Idioma: | Inglês
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.
Palavras-Chave: | Agrofloresta; Amazonas; Brasil; Manaus.
Thesagro: | Bactéria; Cultivo Multiplo; Cupuaçu; Rizosfera; Theobroma Grandiflorum.
Thesaurus Nal: | agroforestry; multiple cropping.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/113593/1/Shift341.pdf
Registro original: | Embrapa Amazônia Ocidental (CPAA)
Exemplares: | CPAA - (4220-1) - UPC - AA - PP - 634.99 - S555p -  - DIS