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|Title: ||Dynamics of forms of inorganic phosphorus in soil under coffee plants as a function of successive annual additions of the nutrient|
|???metadata.dc.creator???: ||Reis, Thiago Henrique Pereira|
Furtini Neto, Antônio Eduardo
Guimarães, Paulo Tácito Gontijo
Guerra, Antônio Fernando
Marques, João José
|Keywords: ||Kaolinitic–oxidic soil|
Solos - Nutrientes
Química do solo
Formas de fósforo
|Publisher: ||Taylor & Francis Group|
|Issue Date: ||2011|
|Citation: ||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.
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). 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.|
|Appears in Collections:||DCS - Artigos publicados em periódicos|
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