Improving crop management can help Cambodia become a major rice exporter
Cambodia has shifted from being a rice importer to a net exporter. Further rice yield improvement is essential to maintain self-sufficiency and increase export capacity. Current yields are low and causes for yield gaps are not understood. Objective To perform a detailed yield-gap analysis by rice ty...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Elsevier BV
2026
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/179041 |
| _version_ | 1855542523743698944 |
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| author | Yuan, Shen Flor, Rica Joy Kumar, Virender Srivastava, Amit Wang, Yucheng Fu, Yifan Kazuki, Saito Kong, Kea Grassini, Patricio |
| author_browse | Flor, Rica Joy Fu, Yifan Grassini, Patricio Kazuki, Saito Kong, Kea Kumar, Virender Srivastava, Amit Wang, Yucheng Yuan, Shen |
| author_facet | Yuan, Shen Flor, Rica Joy Kumar, Virender Srivastava, Amit Wang, Yucheng Fu, Yifan Kazuki, Saito Kong, Kea Grassini, Patricio |
| author_sort | Yuan, Shen |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cambodia has shifted from being a rice importer to a net exporter. Further rice yield improvement is essential to maintain self-sufficiency and increase export capacity. Current yields are low and causes for yield gaps are not understood.
Objective
To perform a detailed yield-gap analysis by rice type and water regime to determine available room for yield increase and entry points for improving crop management.
Methodology
We collected data on yield and management practices from farmer fields across six provinces in Cambodia during 2022–2023 period (n = 2036 field-year observations). Average yields were compared against simulated yield potential to estimate current yield gaps and estimate rice production potential. Random forest analysis and regression tree analysis were used to identify explanatory factors for yield gaps.
Results and Discussion
Average yield was 4.0 and 2.9 Mg ha−1 for non-aromatic and aromatic rice, respectively, representing 46 % and 52 % of the simulated yield potential based on local weather. Main factors explaining yield gaps were seed source and low nitrogen fertilizer rate. Achieving 70–80 % of yield potential could increase national rice production by 7 Mt, representing a 56 % increase from the current level.
Significance
Our study provides key information to orient national agricultural research and development programs and policy. Our case study for Cambodia shows that yield intensification could allow rice importing countries to achieve, not only self-sufficiency, but also develop capacity to export rice, leading to positive economic and social outcomes. |
| format | Journal Article |
| id | CGSpace179041 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2026 |
| publishDateRange | 2026 |
| publishDateSort | 2026 |
| publisher | Elsevier BV |
| publisherStr | Elsevier BV |
| record_format | dspace |
| spelling | CGSpace1790412025-12-19T04:21:53Z Improving crop management can help Cambodia become a major rice exporter Yuan, Shen Flor, Rica Joy Kumar, Virender Srivastava, Amit Wang, Yucheng Fu, Yifan Kazuki, Saito Kong, Kea Grassini, Patricio rice yield potential crop management nitrogen fertilizers exports international trade Cambodia Cambodia has shifted from being a rice importer to a net exporter. Further rice yield improvement is essential to maintain self-sufficiency and increase export capacity. Current yields are low and causes for yield gaps are not understood. Objective To perform a detailed yield-gap analysis by rice type and water regime to determine available room for yield increase and entry points for improving crop management. Methodology We collected data on yield and management practices from farmer fields across six provinces in Cambodia during 2022–2023 period (n = 2036 field-year observations). Average yields were compared against simulated yield potential to estimate current yield gaps and estimate rice production potential. Random forest analysis and regression tree analysis were used to identify explanatory factors for yield gaps. Results and Discussion Average yield was 4.0 and 2.9 Mg ha−1 for non-aromatic and aromatic rice, respectively, representing 46 % and 52 % of the simulated yield potential based on local weather. Main factors explaining yield gaps were seed source and low nitrogen fertilizer rate. Achieving 70–80 % of yield potential could increase national rice production by 7 Mt, representing a 56 % increase from the current level. Significance Our study provides key information to orient national agricultural research and development programs and policy. Our case study for Cambodia shows that yield intensification could allow rice importing countries to achieve, not only self-sufficiency, but also develop capacity to export rice, leading to positive economic and social outcomes. 2026-03 2025-12-19T04:21:52Z 2025-12-19T04:21:52Z Journal Article https://hdl.handle.net/10568/179041 en Limited Access Elsevier BV Yuan, Shen, Rica Joy Flor, Virender Kumar, Amit Srivastava, Yucheng Wang, Yifan Fu, Kazuki Saito, Kea Kong, and Patricio Grassini. "Improving crop management can help Cambodia become a major rice exporter." Field Crops Research 337 (2026): 110238. |
| spellingShingle | rice yield potential crop management nitrogen fertilizers exports international trade Cambodia Yuan, Shen Flor, Rica Joy Kumar, Virender Srivastava, Amit Wang, Yucheng Fu, Yifan Kazuki, Saito Kong, Kea Grassini, Patricio Improving crop management can help Cambodia become a major rice exporter |
| title | Improving crop management can help Cambodia become a major rice exporter |
| title_full | Improving crop management can help Cambodia become a major rice exporter |
| title_fullStr | Improving crop management can help Cambodia become a major rice exporter |
| title_full_unstemmed | Improving crop management can help Cambodia become a major rice exporter |
| title_short | Improving crop management can help Cambodia become a major rice exporter |
| title_sort | improving crop management can help cambodia become a major rice exporter |
| topic | rice yield potential crop management nitrogen fertilizers exports international trade Cambodia |
| url | https://hdl.handle.net/10568/179041 |
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