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Título: Crop growth response and dynamics of inorganic phosphorus fractions after application of reactive Arad phosphate rock in Oxisol with different land use histories
Autor(es): Lacerda, Julian Junio de Jesus
Furtini Neto, Antonio Eduardo
Resende, Alvaro Vilela de
Santos, Jose Zilton Lopes dos
Carneiro, Leandro Flavio
Oliveira, Cesar Henrique Caputo de
Assunto: 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
Publicador: Academic Journals
Data de publicação: Jul-2013
Referência: 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.
Abstract: 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
Idioma: en_US
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