The Response of Soil pH and Exchangeable Al to Alum and Lime Amendments
Intensive cultivation and unprecedented utilization of ammoniacal fertilizer has accelerated soil acidification in the southern Great Plains and many other parts of the world. During a two-year study that evaluated the impact of soil pH and aluminum (Al) toxicity on winter wheat yield potential, we...
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MDPI AG
2021-06-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/11/6/547 |
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| author | Christopher Jorelle Gillespie João Arthur Antonangelo Hailin Zhang |
| author_facet | Christopher Jorelle Gillespie João Arthur Antonangelo Hailin Zhang |
| author_sort | Christopher Jorelle Gillespie |
| collection | DOAJ |
| description | Intensive cultivation and unprecedented utilization of ammoniacal fertilizer has accelerated soil acidification in the southern Great Plains and many other parts of the world. During a two-year study that evaluated the impact of soil pH and aluminum (Al) toxicity on winter wheat yield potential, we observed a variance in the edaphic responses of the two study sites (Stillwater and Chickasha) to two soil amendments, Alum [Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>] and lime [Ca(OH)<sub>2</sub>]. We found that Al<sub>KCl</sub> values at Stillwater were 223% and 150% higher than Chickasha during Year 1 and Year 2, respectively, with similar soil pH. Additionally, Al<sub>sat</sub> values at Stillwater were 30.6% and 24.9% higher than Chickasha during Year 1 and Year 2, respectively. Surprisingly, when treated as a bivariate of Al<sub>sat</sub>, soil buffer indices differed in graphical structure. While Chickasha was identified with a cubic polynomial (<i>p</i> < 0.0001), Stillwater was characterized by linear regression (<i>p</i> < 0.0001). We have reason to believe that this divergence in edaphic response might be attributed to the organically bound Al, dissolved organic carbon (DOC), spatio-temporal variance, and adsorption reactions regulated by the solubility of Al(OH)<sup>+2</sup> species in acidic soils. |
| first_indexed | 2024-03-10T10:24:41Z |
| format | Article |
| id | doaj.art-ae05abae535f4ccc82bf54ffce5b4131 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-10T10:24:41Z |
| publishDate | 2021-06-01 |
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| series | Agriculture |
| spelling | doaj.art-ae05abae535f4ccc82bf54ffce5b41312023-11-22T00:08:52ZengMDPI AGAgriculture2077-04722021-06-0111654710.3390/agriculture11060547The Response of Soil pH and Exchangeable Al to Alum and Lime AmendmentsChristopher Jorelle Gillespie0João Arthur Antonangelo1Hailin Zhang2Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC 27695, USADepartment of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK 74078, USADepartment of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK 74078, USAIntensive cultivation and unprecedented utilization of ammoniacal fertilizer has accelerated soil acidification in the southern Great Plains and many other parts of the world. During a two-year study that evaluated the impact of soil pH and aluminum (Al) toxicity on winter wheat yield potential, we observed a variance in the edaphic responses of the two study sites (Stillwater and Chickasha) to two soil amendments, Alum [Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>] and lime [Ca(OH)<sub>2</sub>]. We found that Al<sub>KCl</sub> values at Stillwater were 223% and 150% higher than Chickasha during Year 1 and Year 2, respectively, with similar soil pH. Additionally, Al<sub>sat</sub> values at Stillwater were 30.6% and 24.9% higher than Chickasha during Year 1 and Year 2, respectively. Surprisingly, when treated as a bivariate of Al<sub>sat</sub>, soil buffer indices differed in graphical structure. While Chickasha was identified with a cubic polynomial (<i>p</i> < 0.0001), Stillwater was characterized by linear regression (<i>p</i> < 0.0001). We have reason to believe that this divergence in edaphic response might be attributed to the organically bound Al, dissolved organic carbon (DOC), spatio-temporal variance, and adsorption reactions regulated by the solubility of Al(OH)<sup>+2</sup> species in acidic soils.https://www.mdpi.com/2077-0472/11/6/547exchangeable aluminumaluminum saturationbuffer indexdissolved organic carbonsoil organic matter |
| spellingShingle | Christopher Jorelle Gillespie João Arthur Antonangelo Hailin Zhang The Response of Soil pH and Exchangeable Al to Alum and Lime Amendments Agriculture exchangeable aluminum aluminum saturation buffer index dissolved organic carbon soil organic matter |
| title | The Response of Soil pH and Exchangeable Al to Alum and Lime Amendments |
| title_full | The Response of Soil pH and Exchangeable Al to Alum and Lime Amendments |
| title_fullStr | The Response of Soil pH and Exchangeable Al to Alum and Lime Amendments |
| title_full_unstemmed | The Response of Soil pH and Exchangeable Al to Alum and Lime Amendments |
| title_short | The Response of Soil pH and Exchangeable Al to Alum and Lime Amendments |
| title_sort | response of soil ph and exchangeable al to alum and lime amendments |
| topic | exchangeable aluminum aluminum saturation buffer index dissolved organic carbon soil organic matter |
| url | https://www.mdpi.com/2077-0472/11/6/547 |
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