Impact of potassium management on soil dynamics and crop uptake in rice systems
Rice, a staple crop in Asia, is critical for the region’s food security. However, intensive rice farming has led to substantial potassium (K) depletion in soils, undermining soil fertility and crop productivity. This study assessed the impact of different K management strategies on soil K dynamics,...
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Frontiers Media
2025
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/176446 |
| _version_ | 1855514045000450048 |
|---|---|
| author | Mohapatra, Suchismita Rout, Kumbha Karna Khanda, Chandramani Mishra, Amit Yadav, Sudhir Padbhushan, Rajeev Mishra, Ajay Kumar Sharma, Sheetal |
| author_browse | Khanda, Chandramani Mishra, Ajay Kumar Mishra, Amit Mohapatra, Suchismita Padbhushan, Rajeev Rout, Kumbha Karna Sharma, Sheetal Yadav, Sudhir |
| author_facet | Mohapatra, Suchismita Rout, Kumbha Karna Khanda, Chandramani Mishra, Amit Yadav, Sudhir Padbhushan, Rajeev Mishra, Ajay Kumar Sharma, Sheetal |
| author_sort | Mohapatra, Suchismita |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rice, a staple crop in Asia, is critical for the region’s food security. However, intensive rice farming has led to substantial potassium (K) depletion in soils, undermining soil fertility and crop productivity. This study assessed the impact of different K management strategies on soil K dynamics, balance, and crop uptake in a puddled, transplanted rice–rice system in Odisha, India, during dry (December–April) and wet (June–October) seasons. The experiment involved nine treatments, including combinations of chemical fertilizers, straw application, and foliar spray, arranged in a randomized block design (RBD). Grain yield was significantly higher when applying chemical fertilizer and foliar spray (3.9 t ha−1 in the dry season and 5.4 t ha−1 in the wet season) compared to the control (2.7 and 4.2 t ha−1, respectively). Higher levels of exchangeable and reserve K were retained with chemical fertilizer applications, while reduced fertilizer doses combined with straw utilized more non-exchangeable K. The dry season exhibited a greater shift in non-exchangeable K, indicative of larger soil K depletion. Treatments combining reduced fertilizer doses with straw yielded a positive K balance, in contrast to the negative balance observed with chemical fertilizers alone. Correlation analyses indicated that reserve and non-exchangeable K significantly contributed to maintaining available K levels in the soil solution, thereby supporting continuous crop K uptake. These findings highlight the necessity of integrating reserve and non-exchangeable K dynamics into nutrient management strategies to ensure sustainable rice production. |
| format | Journal Article |
| id | CGSpace176446 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Frontiers Media |
| publisherStr | Frontiers Media |
| record_format | dspace |
| spelling | CGSpace1764462025-12-08T10:29:22Z Impact of potassium management on soil dynamics and crop uptake in rice systems Mohapatra, Suchismita Rout, Kumbha Karna Khanda, Chandramani Mishra, Amit Yadav, Sudhir Padbhushan, Rajeev Mishra, Ajay Kumar Sharma, Sheetal rice potassium fertilizers soil fertility soil depletion nutrient management crop yield soil organic matter crop residues ferilizer application randomized blocked design Rice, a staple crop in Asia, is critical for the region’s food security. However, intensive rice farming has led to substantial potassium (K) depletion in soils, undermining soil fertility and crop productivity. This study assessed the impact of different K management strategies on soil K dynamics, balance, and crop uptake in a puddled, transplanted rice–rice system in Odisha, India, during dry (December–April) and wet (June–October) seasons. The experiment involved nine treatments, including combinations of chemical fertilizers, straw application, and foliar spray, arranged in a randomized block design (RBD). Grain yield was significantly higher when applying chemical fertilizer and foliar spray (3.9 t ha−1 in the dry season and 5.4 t ha−1 in the wet season) compared to the control (2.7 and 4.2 t ha−1, respectively). Higher levels of exchangeable and reserve K were retained with chemical fertilizer applications, while reduced fertilizer doses combined with straw utilized more non-exchangeable K. The dry season exhibited a greater shift in non-exchangeable K, indicative of larger soil K depletion. Treatments combining reduced fertilizer doses with straw yielded a positive K balance, in contrast to the negative balance observed with chemical fertilizers alone. Correlation analyses indicated that reserve and non-exchangeable K significantly contributed to maintaining available K levels in the soil solution, thereby supporting continuous crop K uptake. These findings highlight the necessity of integrating reserve and non-exchangeable K dynamics into nutrient management strategies to ensure sustainable rice production. 2025-06-04 2025-09-11T03:14:46Z 2025-09-11T03:14:46Z Journal Article https://hdl.handle.net/10568/176446 en Open Access application/pdf Frontiers Media Mohapatra, Suchismita, Kumbha Karna Rout, Chandramani Khanda, Amit Mishra, Sudhir Yadav, Rajeev Padbhushan, Ajay Kumar Mishra, and Sheetal Sharma. "Impact of potassium management on soil dynamics and crop uptake in rice systems." Frontiers in Sustainable Food Systems 9 (2025): 1453311. |
| spellingShingle | rice potassium fertilizers soil fertility soil depletion nutrient management crop yield soil organic matter crop residues ferilizer application randomized blocked design Mohapatra, Suchismita Rout, Kumbha Karna Khanda, Chandramani Mishra, Amit Yadav, Sudhir Padbhushan, Rajeev Mishra, Ajay Kumar Sharma, Sheetal Impact of potassium management on soil dynamics and crop uptake in rice systems |
| title | Impact of potassium management on soil dynamics and crop uptake in rice systems |
| title_full | Impact of potassium management on soil dynamics and crop uptake in rice systems |
| title_fullStr | Impact of potassium management on soil dynamics and crop uptake in rice systems |
| title_full_unstemmed | Impact of potassium management on soil dynamics and crop uptake in rice systems |
| title_short | Impact of potassium management on soil dynamics and crop uptake in rice systems |
| title_sort | impact of potassium management on soil dynamics and crop uptake in rice systems |
| topic | rice potassium fertilizers soil fertility soil depletion nutrient management crop yield soil organic matter crop residues ferilizer application randomized blocked design |
| url | https://hdl.handle.net/10568/176446 |
| work_keys_str_mv | AT mohapatrasuchismita impactofpotassiummanagementonsoildynamicsandcropuptakeinricesystems AT routkumbhakarna impactofpotassiummanagementonsoildynamicsandcropuptakeinricesystems AT khandachandramani impactofpotassiummanagementonsoildynamicsandcropuptakeinricesystems AT mishraamit impactofpotassiummanagementonsoildynamicsandcropuptakeinricesystems AT yadavsudhir impactofpotassiummanagementonsoildynamicsandcropuptakeinricesystems AT padbhushanrajeev impactofpotassiummanagementonsoildynamicsandcropuptakeinricesystems AT mishraajaykumar impactofpotassiummanagementonsoildynamicsandcropuptakeinricesystems AT sharmasheetal impactofpotassiummanagementonsoildynamicsandcropuptakeinricesystems |