Use este identificador para citar ou linkar para este item:
http://repositorio.ufla.br/jspui/handle/1/12560
Título: | Crop growth response and dynamics of inorganic phosphorus fractions after application of reactive Arad phosphate rock in Oxisol with different land use histories |
Palavras-chave: | Soils – State of Goiás, Brazil – Cerrado Plants – Effect of phosphorus Phosphorus fertilization Phosphorus fractionation Solos – Goiás (Estado) – Cerrado Plantas – Efeito do fósforo Adubação fosfatada Fracionamento de fósforo |
Data do documento: | Jul-2013 |
Editor: | Academic Journals |
Citação: | LACERDA, J. J. de J. et al. Crop growth response and dynamics of inorganic phosphorus fractions after application of reactive Arad phosphate rock in Oxisol with different land use histories. African Journal of Agricultural Research, [S. l.], v. 8, n. 26, p. 3454-3461, July 2013. |
Resumo: | Adsorbed or precipitated phosphorus can be susceptible to dissolution depending upon environmental conditions. This work evaluated both the partitioning and availability of the inorganic forms of P bound to Al, Fe and Ca in samples of a clayey Dystrophic Red Latosol (Oxisol) (DRL) with different land use history, fertilized with Arad reactive natural phosphate in Goias State, Brazil. The inorganic fractions of Al-P, Fe-P and Ca-P and the contents of Mehlich-1, ion-exchange resin, citric acid and Olsen extracted available P were determined in DRL. Plants grown in soil previously cultivated produce more beans than plants grown in soil not previously cultivated. The fractions Al-P and Fe-P represent the main inorganic forms in clayey DRL, being phosphorus availability closely related with the fraction Al-P. The distributions of the inorganic fractions of P in the soil fertilized with reactive phosphate were Fe-P = 45%, Al-P = 40% and Ca-P = 15%. The phosphorus content determined by alkaline extraction (Olsen Method) was closely related to levels of Al-P and Fe-P. On other hand, the concentrations determined by extracting acids (Mehlich-1 and citric acid) were more related to the Ca-P fraction. Fe-P and Al-P inorganic forms stocked over time with successive fertilizations in Oxisol with a history of cultivation in no-tillage may return to soil solution and provide the nutrient demand of plants. |
URI: | http://repositorio.ufla.br/jspui/handle/1/12560 |
Aparece nas coleções: | DCS - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
ARTIGO_Crop growth response and dynamics....pdf | 387,82 kB | Adobe PDF | Visualizar/Abrir |
Este item está licenciada sob uma Licença Creative Commons