Data/hora: 23/06/2024 21:09:36

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 14/03/2000
Data da última atualização: | 08/01/2019
Autoria: | ALLEONI, L. R. F.; CAMARGO, O. A. de.
Afiliação: | LUÍS REYNALDO FERRACCIÚ ALLEONI, Escola Superior de Agricultura Luiz de Queiros - ESALQ/Departamento de Solos e Nutrição de Plantas; OTÁVIO ANTONIO DE CAMARGO, Instituto Agronômico/Centro de Solos e Recursos Agroambientais.
Título: | Boron adsorption in soils from the state of São Paulo, Brazil.
Ano de publicação: | 2000
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 2, p. 413-421, fev. 2000
Idioma: | Inglês
Notas: | Título em português: Adorsão de boro em solos do Estado de São Paulo, Brasil.
Conteúdo: | Boron adsorption was studied in five representative soils (Rhodic Hapludox, Arenic Paleudalf and three Typic Hapludox) from the State of São Paulo, Brazil. Adsorption was higher in the clayey Oxisols, followed by the Alfisol and the coarser Oxisols. Calcium carbonate promoted an increase in the amount of adsorbed boron in all soils, with the most pronounced effect in the coarser-textured Oxisols. High correlation coefficients were found between adsorbed boron and clay and amorphous aluminum oxide contents and specific surface area (r = 0.79, 0.76 and 0.73, respectively, p < 0.01). Clay content, free aluminum oxide, and hot CaCl2 (0.01 mol L-1)-extracted boron explained 93% of the variation of adsorbed boron. Langmuir and Freundlich isotherms fitted well to the adsorbed data, and highest values for maximum boron adsorption were found in clayey soils, which were significantly correlated with contents of total, free and amorphous iron and aluminum oxides, as well with the physical attributes. Ninety four percent of the variation in the maximum adsorption could be related to the free iron content.
Palavras-Chave: | Correlacao; Statistical methods.
Thesagro: | Método Estatístico; Solo Tropical.
Thesaurus Nal: | correlation; tropical soils.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/16815/1/pab97_433.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (16815-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS