The chemical characteristics of soil which determine phosphorus partitioning in highly calcareous soils
| Title: | The chemical characteristics of soil which determine phosphorus partitioning in highly calcareous soils |
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| Authors: | Topalović Ana, Pfendt Lidija B., Perović Natalija, Đorđević Dragana, Trifunović Snežana, Pfendt Petar A. |
| Source: | Journal of the Serbian Chemical Society, Vol 71, Iss 11, Pp 1219-1236 (2006) |
| Publisher Information: | Serbian Chemical Society, 2006. |
| Publication Year: | 2006 |
| Collection: | LCC:Chemistry |
| Subject Terms: | nh4f-extractable p, naoh-extractable p, phosphorus-associations, principalcomponent analysis, Chemistry, QD1-999 |
| More Details: | Phosphorus fractions from three highly calcareous soils (average, 24.9 ± 4.8 %CO3 2-) from sampling sites with a Mediterranean climate were isolated by sequential extraction. In order to provide a more reliable basis for the definition of the obtained P-fractions, principal component analysis was applied and from the chemical characteristics of the 14 investigated soils, those characteristics which define the content and association features of the P-fractions were assessed. The soils are characterized by a relatively high pH (8.0 - 8.2) and by significantly differing contents of organic mater, acid-soluble Mg and total P. These differences affected the various association features of the P-fraction with the soil constituents. The NH4F-P fraction (isolated with 0.5 M NH4F, pH 8.2) is defined by the contents of the main metals of the oxide-hydroxide- clay associations (Al, Fe,Mn) or by the the redox potential (Eh) of Mn. The accumulation of NaOH-phosphorus (extractable with 0.1M NaOH) depended on the constituents of the oxide-hydroxide-clay association, the humic substances and Eh-related factors. In those soils in which NaOH-Pis defined by the oxide-hydroxide-clay association, the participation of Fe as a bridge-forming metal is proposed. The main part of total P, i.e., ∆P = TP - (NH 4F-P + NaOH-P) is defined by the status of Mn- and Fe-humic complexes or by the concentration of hydroxyl-ions. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 0352-5139 1820-7421 |
| Relation: | https://doaj.org/toc/0352-5139; https://doaj.org/toc/1820-7421 |
| DOI: | 10.2298/JSC0611219T |
| Access URL: | https://doaj.org/article/4485a144f7d64398a54e4eef8b74de60 |
| Accession Number: | edsdoj.4485a144f7d64398a54e4eef8b74de60 |
| Database: | Directory of Open Access Journals |
| ISSN: | 03525139 18207421 |
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| DOI: | 10.2298/JSC0611219T |
| Published in: | Journal of the Serbian Chemical Society |
| Language: | English |