An improved procedure for determining magnesium fertilizer dissolution in field soils
The sequential extraction procedure currently used to measure magnesium (Mg) fertilizer dissolution in soils consists of removing dissolved Mg (step 1), and partially dissolved Mg (step 2), followed by an 18?h extraction with 2 M HCl at room temperature to determine undissolved Mg (step 3). This pro...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Informa UK Limited
2005
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/43178 |
| _version_ | 1855543769994100736 |
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| author | Loganathan, P Mitchell, AD Hanly, JA Aye, Tin Maung |
| author_browse | Aye, Tin Maung Hanly, JA Loganathan, P Mitchell, AD |
| author_facet | Loganathan, P Mitchell, AD Hanly, JA Aye, Tin Maung |
| author_sort | Loganathan, P |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The sequential extraction procedure currently used to measure magnesium (Mg) fertilizer dissolution in soils consists of removing dissolved Mg (step 1), and partially dissolved Mg (step 2), followed by an 18?h extraction with 2 M HCl at room temperature to determine undissolved Mg (step 3). This procedure is satisfactory for soluble and moderately soluble Mg fertilizers but is not an accurate procedure for slightly soluble fertilizers, such as serpentine. When step 3 is replaced by a digestion procedure using 2 M HCl for 4 h at 90–95°C (improved step 3), the total serpentine Mg recovery (dissolved and undissolved Mg) from soil samples, either immediately after serpentine was added to soil or after a 21?day incubation with moist soil, was about 100% compared to 40–50% by the original procedure. The improved procedure also increased the recovery of serpentine Mg applied to field soils. Therefore, this study recommends that the third step of the sequential extraction procedure be replaced by a 4 h digestion using 2 M HCl (90–95°C). |
| format | Journal Article |
| id | CGSpace43178 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2005 |
| publishDateRange | 2005 |
| publishDateSort | 2005 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace431782024-08-27T10:37:29Z An improved procedure for determining magnesium fertilizer dissolution in field soils Loganathan, P Mitchell, AD Hanly, JA Aye, Tin Maung magnesium fertilizers fertilizer application dissolving new zealand abonos magnésicos aplicación de abonos disolución nueva zelandia The sequential extraction procedure currently used to measure magnesium (Mg) fertilizer dissolution in soils consists of removing dissolved Mg (step 1), and partially dissolved Mg (step 2), followed by an 18?h extraction with 2 M HCl at room temperature to determine undissolved Mg (step 3). This procedure is satisfactory for soluble and moderately soluble Mg fertilizers but is not an accurate procedure for slightly soluble fertilizers, such as serpentine. When step 3 is replaced by a digestion procedure using 2 M HCl for 4 h at 90–95°C (improved step 3), the total serpentine Mg recovery (dissolved and undissolved Mg) from soil samples, either immediately after serpentine was added to soil or after a 21?day incubation with moist soil, was about 100% compared to 40–50% by the original procedure. The improved procedure also increased the recovery of serpentine Mg applied to field soils. Therefore, this study recommends that the third step of the sequential extraction procedure be replaced by a 4 h digestion using 2 M HCl (90–95°C). 2005-09 2014-09-24T08:41:44Z 2014-09-24T08:41:44Z Journal Article https://hdl.handle.net/10568/43178 en Limited Access Informa UK Limited |
| spellingShingle | magnesium fertilizers fertilizer application dissolving new zealand abonos magnésicos aplicación de abonos disolución nueva zelandia Loganathan, P Mitchell, AD Hanly, JA Aye, Tin Maung An improved procedure for determining magnesium fertilizer dissolution in field soils |
| title | An improved procedure for determining magnesium fertilizer dissolution in field soils |
| title_full | An improved procedure for determining magnesium fertilizer dissolution in field soils |
| title_fullStr | An improved procedure for determining magnesium fertilizer dissolution in field soils |
| title_full_unstemmed | An improved procedure for determining magnesium fertilizer dissolution in field soils |
| title_short | An improved procedure for determining magnesium fertilizer dissolution in field soils |
| title_sort | improved procedure for determining magnesium fertilizer dissolution in field soils |
| topic | magnesium fertilizers fertilizer application dissolving new zealand abonos magnésicos aplicación de abonos disolución nueva zelandia |
| url | https://hdl.handle.net/10568/43178 |
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