Extractable aluminium, iron and manganese in mineral soils: III Comparison of extraction methods
The extractability of soil Al, Fe and Mn were studied in 102 mineral soil samples. The extractants were 0.05 M oxalate (pH 2.9), 0.05 M K4P2O7 (pH 10), 0.02 M EDTA (pH 5.3) and 1 M CH3COONH4 (pH 4.8). In the group of clay and silt soils (n = 51), the Al extracted by the four extractants correlated c...
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| Format: | Article |
| Language: | English |
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Scientific Agricultural Society of Finland
1989-03-01
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| Series: | Agricultural and Food Science |
| Online Access: | https://journal.fi/afs/article/view/72357 |
| _version_ | 1818971688010776576 |
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| author | Raina Niskanen |
| author_facet | Raina Niskanen |
| author_sort | Raina Niskanen |
| collection | DOAJ |
| description | The extractability of soil Al, Fe and Mn were studied in 102 mineral soil samples. The extractants were 0.05 M oxalate (pH 2.9), 0.05 M K4P2O7 (pH 10), 0.02 M EDTA (pH 5.3) and 1 M CH3COONH4 (pH 4.8). In the group of clay and silt soils (n = 51), the Al extracted by the four extractants correlated closely; the r values ranged from 0.91*** to 0.96***; in coarser soils (n = 51) the r values ranged from 0.42* to 0.82***. In clay and silt soils, the organic carbon content and soil pH together explained 50 % of the variation in oxalate-extractable Al, 70 % of the variation in pyrophosphate-extractable Al, 53 % of the variation in pyrophosphate-extractable Fe and 56 % of the variation in acetate-extractable Al. The clay and organic carbon contents together with soil pH explained 77 % of the variation in EDTA-extractable Al in clay and silt soils. In coarse soils, the extractable metals were not closely related to the soil characteristics. |
| first_indexed | 2024-12-20T14:56:21Z |
| format | Article |
| id | doaj.art-0bb0eda55de24c6eaa74cecd0cf13f56 |
| institution | Directory Open Access Journal |
| issn | 1459-6067 1795-1895 |
| language | English |
| last_indexed | 2024-12-20T14:56:21Z |
| publishDate | 1989-03-01 |
| publisher | Scientific Agricultural Society of Finland |
| record_format | Article |
| series | Agricultural and Food Science |
| spelling | doaj.art-0bb0eda55de24c6eaa74cecd0cf13f562022-12-21T19:36:50ZengScientific Agricultural Society of FinlandAgricultural and Food Science1459-60671795-18951989-03-01612Extractable aluminium, iron and manganese in mineral soils: III Comparison of extraction methodsRaina Niskanen0University of Helsinki, Department of Agricultural Chemistry, SF-00710 Helsinki, FinlandThe extractability of soil Al, Fe and Mn were studied in 102 mineral soil samples. The extractants were 0.05 M oxalate (pH 2.9), 0.05 M K4P2O7 (pH 10), 0.02 M EDTA (pH 5.3) and 1 M CH3COONH4 (pH 4.8). In the group of clay and silt soils (n = 51), the Al extracted by the four extractants correlated closely; the r values ranged from 0.91*** to 0.96***; in coarser soils (n = 51) the r values ranged from 0.42* to 0.82***. In clay and silt soils, the organic carbon content and soil pH together explained 50 % of the variation in oxalate-extractable Al, 70 % of the variation in pyrophosphate-extractable Al, 53 % of the variation in pyrophosphate-extractable Fe and 56 % of the variation in acetate-extractable Al. The clay and organic carbon contents together with soil pH explained 77 % of the variation in EDTA-extractable Al in clay and silt soils. In coarse soils, the extractable metals were not closely related to the soil characteristics.https://journal.fi/afs/article/view/72357 |
| spellingShingle | Raina Niskanen Extractable aluminium, iron and manganese in mineral soils: III Comparison of extraction methods Agricultural and Food Science |
| title | Extractable aluminium, iron and manganese in mineral soils: III Comparison of extraction methods |
| title_full | Extractable aluminium, iron and manganese in mineral soils: III Comparison of extraction methods |
| title_fullStr | Extractable aluminium, iron and manganese in mineral soils: III Comparison of extraction methods |
| title_full_unstemmed | Extractable aluminium, iron and manganese in mineral soils: III Comparison of extraction methods |
| title_short | Extractable aluminium, iron and manganese in mineral soils: III Comparison of extraction methods |
| title_sort | extractable aluminium iron and manganese in mineral soils iii comparison of extraction methods |
| url | https://journal.fi/afs/article/view/72357 |
| work_keys_str_mv | AT rainaniskanen extractablealuminiumironandmanganeseinmineralsoilsiiicomparisonofextractionmethods |