Potassium supplying capacity and contribution of non-exchangeable potassium in wetland rice soils in Bangladesh
Information on soil potassium (K) supplying capacity, K-depletion, and contribution of exchangeable and non-exchangeable K in wetland rice ecology is limited. Understanding of K dynamics of different soil types can be a guideline for better K-fertilizer management and sustainable soil K use to achie...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Informa UK Limited
2023
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| Online Access: | https://hdl.handle.net/10568/131508 |
| _version_ | 1855528021426962432 |
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| author | Saiful Islam Gathala, Mahesh K. Timsina, Jagadish Dutta, Sudarshan Muhammad Salim Majumdar, Kaushik |
| author_browse | Dutta, Sudarshan Gathala, Mahesh K. Majumdar, Kaushik Muhammad Salim Saiful Islam Timsina, Jagadish |
| author_facet | Saiful Islam Gathala, Mahesh K. Timsina, Jagadish Dutta, Sudarshan Muhammad Salim Majumdar, Kaushik |
| author_sort | Saiful Islam |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Information on soil potassium (K) supplying capacity, K-depletion, and contribution of exchangeable and non-exchangeable K in wetland rice ecology is limited. Understanding of K dynamics of different soil types can be a guideline for better K-fertilizer management and sustainable soil K use to achieve sustainable rice yields. To understand this soil K-supplying capacity to rice plants, a pot study with two K levels (K0 and K100 mg K kg-1 soil) was conducted with seven successive rice crops grown up to the panicle initiation stage using 18 different soils collected from across Bangladesh. The cumulative soil K-supplying capacity (242–758 mg K kg-1 soil) varied significantly (P ≤.001) among soils, showing a strong positive relationship (R2 = 0.78) with NH4OAc K. The potential K-supplying capacity of these soils was the highest (758 mg K kg-1 soil) in Mithapukur (AEZ 3-Tista Meander Floodplain) and the lowest (242 mg K kg-1 soil) in Barura (AEZ 19-Old Meghna Estuarine Floodplain). In K0 soils, the successive cycles of rice resulted in continuous depletion of both non-exchangeable and exchangeable K pools. The concentration of both exchangeable and non-exchangeable K was maintained and almost balanced in K100 soils compared to K0 with successive rice cropping. Non-exchangeable K contribution to K nutrition of rice plants during the seventh cropping ranged, respectively, from 83% to 93% and 26% to 55% in K0 and K100 soils. Results reveal the importance of a non-exchangeable K pool in K-supplying to plants in wetland rice production systems with different soil types. |
| format | Journal Article |
| id | CGSpace131508 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace1315082025-01-27T15:00:52Z Potassium supplying capacity and contribution of non-exchangeable potassium in wetland rice soils in Bangladesh Saiful Islam Gathala, Mahesh K. Timsina, Jagadish Dutta, Sudarshan Muhammad Salim Majumdar, Kaushik potassium soil rice cropping systems Information on soil potassium (K) supplying capacity, K-depletion, and contribution of exchangeable and non-exchangeable K in wetland rice ecology is limited. Understanding of K dynamics of different soil types can be a guideline for better K-fertilizer management and sustainable soil K use to achieve sustainable rice yields. To understand this soil K-supplying capacity to rice plants, a pot study with two K levels (K0 and K100 mg K kg-1 soil) was conducted with seven successive rice crops grown up to the panicle initiation stage using 18 different soils collected from across Bangladesh. The cumulative soil K-supplying capacity (242–758 mg K kg-1 soil) varied significantly (P ≤.001) among soils, showing a strong positive relationship (R2 = 0.78) with NH4OAc K. The potential K-supplying capacity of these soils was the highest (758 mg K kg-1 soil) in Mithapukur (AEZ 3-Tista Meander Floodplain) and the lowest (242 mg K kg-1 soil) in Barura (AEZ 19-Old Meghna Estuarine Floodplain). In K0 soils, the successive cycles of rice resulted in continuous depletion of both non-exchangeable and exchangeable K pools. The concentration of both exchangeable and non-exchangeable K was maintained and almost balanced in K100 soils compared to K0 with successive rice cropping. Non-exchangeable K contribution to K nutrition of rice plants during the seventh cropping ranged, respectively, from 83% to 93% and 26% to 55% in K0 and K100 soils. Results reveal the importance of a non-exchangeable K pool in K-supplying to plants in wetland rice production systems with different soil types. 2023-11-13 2023-08-08T22:19:31Z 2023-08-08T22:19:31Z Journal Article https://hdl.handle.net/10568/131508 en Limited Access Informa UK Limited Islam, S., Gathala, M. K., Timsina, J., Dutta, S., Salim, M., & Majumdar, K. (2023). Potassium sup-plying capacity and contribution of non-exchangeable potassium in wetland rice soils in Bangladesh. Communications in Soil Science and Plant Analysis 54(20):2745–2762. |
| spellingShingle | potassium soil rice cropping systems Saiful Islam Gathala, Mahesh K. Timsina, Jagadish Dutta, Sudarshan Muhammad Salim Majumdar, Kaushik Potassium supplying capacity and contribution of non-exchangeable potassium in wetland rice soils in Bangladesh |
| title | Potassium supplying capacity and contribution of non-exchangeable potassium in wetland rice soils in Bangladesh |
| title_full | Potassium supplying capacity and contribution of non-exchangeable potassium in wetland rice soils in Bangladesh |
| title_fullStr | Potassium supplying capacity and contribution of non-exchangeable potassium in wetland rice soils in Bangladesh |
| title_full_unstemmed | Potassium supplying capacity and contribution of non-exchangeable potassium in wetland rice soils in Bangladesh |
| title_short | Potassium supplying capacity and contribution of non-exchangeable potassium in wetland rice soils in Bangladesh |
| title_sort | potassium supplying capacity and contribution of non exchangeable potassium in wetland rice soils in bangladesh |
| topic | potassium soil rice cropping systems |
| url | https://hdl.handle.net/10568/131508 |
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