Influence of potassium fertilizers on stable carbon isotopic ratio in rice
Isotope measurements are associated with critical plant resources. Thus, stable rice crop's carbon isotope composition in response to potassium (K) fertilizer was determined,since K is a primary plant nutrient that plays a major role in achieving maximum economic yields. Rice plants were grown...
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| Format: | Article |
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Malaysian Society of Soil Science
2022
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| Online Access: | http://psasir.upm.edu.my/id/eprint/101903/ |
| _version_ | 1848863662092058624 |
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| author | S. M. A, Nuraini M. A., Adibah Sulaiman, M. F. |
| author_facet | S. M. A, Nuraini M. A., Adibah Sulaiman, M. F. |
| author_sort | S. M. A, Nuraini |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Isotope measurements are associated with critical plant resources. Thus, stable rice crop's carbon isotope composition in response to potassium (K) fertilizer was determined,since K is a primary plant nutrient that plays a major role in achieving maximum economic yields. Rice plants were grown in the field and rain shelter under five treatments, which are T1 (no-K), T2 (MOP), T3 (SOP), T4 (Polyhalite) and T5 (conventional fertilizer). The fertilizers were applied 3 days after planting (DAP), 15 DAP, 55 DAP and 75 DAP. Leaf photosynthesis and stomata conductance measurements were taken 85 DAP. The samples were then dried and reserved for carbon isotope analyses. Photosynthesis declined due to K deficiency in the no-K treatment. From this research, we can conclude that stomatal conductance is affected by K fertilizer application where it controls the carboxylation efficiency which may affect the rate of photosynthesis. Later, photosynthesis may influence the discrimination of δ13 isotope value. There is discrimination against this heavier isotope of CO2, this is because CO2 diffuses through stomata by carbon 12 faster than carbon 13 so that is why there is discrimination against carbon 13 in the stomata. |
| first_indexed | 2025-11-15T13:36:29Z |
| format | Article |
| id | upm-101903 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:36:29Z |
| publishDate | 2022 |
| publisher | Malaysian Society of Soil Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1019032023-08-18T23:41:33Z http://psasir.upm.edu.my/id/eprint/101903/ Influence of potassium fertilizers on stable carbon isotopic ratio in rice S. M. A, Nuraini M. A., Adibah Sulaiman, M. F. Isotope measurements are associated with critical plant resources. Thus, stable rice crop's carbon isotope composition in response to potassium (K) fertilizer was determined,since K is a primary plant nutrient that plays a major role in achieving maximum economic yields. Rice plants were grown in the field and rain shelter under five treatments, which are T1 (no-K), T2 (MOP), T3 (SOP), T4 (Polyhalite) and T5 (conventional fertilizer). The fertilizers were applied 3 days after planting (DAP), 15 DAP, 55 DAP and 75 DAP. Leaf photosynthesis and stomata conductance measurements were taken 85 DAP. The samples were then dried and reserved for carbon isotope analyses. Photosynthesis declined due to K deficiency in the no-K treatment. From this research, we can conclude that stomatal conductance is affected by K fertilizer application where it controls the carboxylation efficiency which may affect the rate of photosynthesis. Later, photosynthesis may influence the discrimination of δ13 isotope value. There is discrimination against this heavier isotope of CO2, this is because CO2 diffuses through stomata by carbon 12 faster than carbon 13 so that is why there is discrimination against carbon 13 in the stomata. Malaysian Society of Soil Science 2022 Article PeerReviewed S. M. A, Nuraini and M. A., Adibah and Sulaiman, M. F. (2022) Influence of potassium fertilizers on stable carbon isotopic ratio in rice. Malaysian Journal of Soil Science, 26. 80 - 87. ISSN 1394-7990 https://www.msss.com.my/mjss/v26.php |
| spellingShingle | S. M. A, Nuraini M. A., Adibah Sulaiman, M. F. Influence of potassium fertilizers on stable carbon isotopic ratio in rice |
| title | Influence of potassium fertilizers on stable carbon isotopic ratio in rice |
| title_full | Influence of potassium fertilizers on stable carbon isotopic ratio in rice |
| title_fullStr | Influence of potassium fertilizers on stable carbon isotopic ratio in rice |
| title_full_unstemmed | Influence of potassium fertilizers on stable carbon isotopic ratio in rice |
| title_short | Influence of potassium fertilizers on stable carbon isotopic ratio in rice |
| title_sort | influence of potassium fertilizers on stable carbon isotopic ratio in rice |
| url | http://psasir.upm.edu.my/id/eprint/101903/ http://psasir.upm.edu.my/id/eprint/101903/ |