Data/hora: 08/06/2024 17:20:18

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 08/06/2009
Data da última atualização: | 15/03/2023
Autoria: | LEMOS, S. G.; MENEZES, E. A.; CHAVES, F. S.; NOGUEIRA, A. R. de A.; TORRE NETO, A.; PARRA, A.; ALONSO, J.
Afiliação: | SHERLAN G. LEMOS, UFSCAR; EVELINE A. MENEZES, UFSCAR; F. S. CHAVES, UFSCAR; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; ANDRE TORRE NETO, CNPDIA; A. PARRA, UNIVERSITY OF BARCELONA; J. ALONSO, UNIVERSITY OF BARCELONA.
Título: | In situ soil phosphorus monitoring probe compared with conventional extraction procedures.
Ano de publicação: | 2009
Fonte/Imprenta: | Communications in soil Science and Plant Analysis, v. 40, n. 7-8, p. 1283-1294, apr. 2009.
DOI: | https://doi.org/10.1080/00103620902761155
Idioma: | Inglês
Conteúdo: | In this work, selective chemical sensors of phosphorus (PO4 3?) installed in PVC probes and their associated instrumentation were evaluated in soil solution phosphorous monitoring. The evaluation was carried out with the addition of a 0.1 mol L?1 P?PO4 3? solution in the soil, followed by data acquisition supplied by the probes; by collecting soil samples in the region where the probes were installed; and by phosphorus determination through conventional laboratory techniques. The phosphorus amounts were determined by spectrophotometry after the following extraction methodologies: Mehlich 1, Mehlich 3, and ionic exchange resin. The results, compared with the potentials registered by the probes, express the best correlation with the results obtained with the resin method. The results indicate good response of the sensors and the potential applicability of these probes to assist in the monitoring of soil nutrients, helping to establish rational processes in the use of fertilizers in crops.
Palavras-Chave: | Extraction procedures.
Thesaurus Nal: | phosphorus; soil.
Categoria do assunto: | W Química e Física
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (18340-1) - UPC - AP - DD - PROCI-2009.00004 - LEM - 2009.00004 - DIS