Availability and fractionation of phosphorus in soils with different physicochemical characteristics
| Autor: | Liovando Marciano da Costa, Djalma Silva Pereira, Davi Lopes do Carmo, Ana Caroline Teixeira Rocha |
|---|---|
| Přispěvatelé: | CNPq e CAPES |
| Rok vydání: | 2020 |
| Předmět: |
Organizational Behavior and Human Resource Management
Inceptisol Agriculture (General) Strategy and Management Pharmaceutical Science chemistry.chemical_element Fractionation phosphorus extractors. phosphorus available. fractionation of inorganic phosphorus. tropical soils S1-972 Soil pH Drug Discovery GE1-350 Marketing Pharmacology Phosphorus Agriculture Soil classification Environmental sciences Agronomia. Ciência do Solo chemistry Oxisol Phosphorus extractors. Phosphorus available. Fractionation of inorganic phosphorus. Tropical soils Environmental chemistry Soil water Entisol |
| Zdroj: | AGRO@MBIENTE JOURNALRAGR; Vol. 14 (2020) REVISTA AGRO@MBIENTE ON-LINE; Vol. 14 (2020) REVISTA AGRO@MBIENTE ON-LINE; v. 14 (2020) Agro@mbiente on-line Universidade Federal de Roraima (UFRR) instacron:UFRR Agro@mbiente On-line, Vol 14, Iss 0 (2020) Revista Agro@mbiente On-line; v. 14 (2020) |
| ISSN: | 1982-8470 |
| DOI: | 10.18227/1982-8470ragro.v14i0.6811 |
| Popis: | The total content of phosphorus (P) within soil does not reflect its availability for plants, the available form depending on the physical and chemical characteristics of the soil. The aim was to evaluate the availability of P, using Mehlich-1 and Mehlich-3 extractors, and to determine the different forms of inorganic P in different classes of soils. Samples from horizon A of five soil classes from the municipality of Lagoa Formosa, Minas Gerais, were used: Typical Dystrophic Litholytic Entisol (RLd), Typical Dystrophic Red Oxisol (LVd), Typical Dystrophic Tb Hapludox Inceptisol (CXbd), Typical Acriferic Red Oxisol (LVwf), and Typical Chernossolic Litholytic Entisol (RLm). The levels of available P, remaining P, and total P were determined. From the fractionation of inorganic P, it was determined: soluble P (“P-H2O”), P bonded to aluminum (P-Al), P bonded to iron (P-Fe), and P bonded to calcium (P-Ca). The Mehlich-1 and Mehlich-3 extractors had a high correlation coefficient, indicating that both methods could be used to extract available P from the soil. Mehlich-1 extracted more available P in the soil with a high calcium content (RLm). High levels of total P observed in LVwf and RLm were mainly due to the parent material of the soils. P-Fe and P-Al are the predominant inorganic P fractions in the most weathered (RLd, LVd, and LVwf) and acidic soils (Cxbd). In RLm, the inorganic P is predominantly P-Ca. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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