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Título: Dynamics of forms of inorganic phosphorus in soil under coffee plants as a function of successive annual additions of the nutrient
Autor(es): Reis, Thiago Henrique Pereira
Furtini Neto, Antônio Eduardo
Guimarães, Paulo Tácito Gontijo
Curi, Nilton
Guerra, Antônio Fernando
Marques, João José
Assunto: Kaolinitic–oxidic soil
Soil chemistry
Phosphorus forms
Solos - Nutrientes
Química do solo
Formas de fósforo
Publicador: Taylor & Francis Group
Data de publicação: 2011
Referência: REIS, T. H. P. et al. Dynamics of forms of inorganic phosphorus in soil under coffee plants as a function of successive annual additions of the nutrient. Communications in Soil Science and Plant Analysis, New York, v. 42, n. 8, p. 980-991, 2011.
Abstract: Phosphorus (P) dynamics and availability in soils are influenced by P fertilization. This paper aimed to evaluate inorganic P fractions bonded to calcium (Ca), iron (Fe), and aluminum (Al), associating them with soil mineralogy. The experiment was carried out using an acidic kaolinitic–oxidic soil, located in an irrigated area cultivated with coffee plants (Coffee arabica L.), submitted to successive annual fertilizations with triple superphosphate doses of 0, 50, 100 200, and 400 kg ha−1 phosphorus pentoxide (P2O5) in randomized blocks with three replications. Phosphorus fractions were determined in soil samples collected at two depths, 0–10 and 10–20 cm, according to the methodology used by Chang and Jackson (1957 Chang, S. C. and Jackson, M. L. 1957. Fractionation of soil phosphorus. Soil Science, 84: 133–144. [CrossRef], [Google Scholar] ). The inorganic P fractions presented the following sequence: P-Al > P-Fe > P-Ca. The dynamics of forms of inorganic P showed that P-Al is controlling the P bioavailability as a result of an acidic pH and a very simple and thermodynamically stable clay mineralogy, typical of very weathered and old tropical soils.
URI: http://www.tandfonline.com/doi/figure/10.1080/00103624.2011.558966?scroll=top&needAccess=true
http://repositorio.ufla.br/jspui/handle/1/12628
Idioma: en_US
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