The practice and effects of the System of Rice Intensification (SRI) in Sri Lanka
In Sri Lanka rice is grown under conditions of sub-optimal water and land availability. Thus, innovations such as the System of Rice Intensification (SRI) that can increase productivity and save resources are needed. The objective of this study was to understand how SRI was implemented on farms in S...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
2008
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| Online Access: | https://hdl.handle.net/10568/40756 |
| _version_ | 1855533272517312512 |
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| author | Namara, Regassa E. Bossio, Deborah A. Weligamage, Parakrama Herath, Indika |
| author_browse | Bossio, Deborah A. Herath, Indika Namara, Regassa E. Weligamage, Parakrama |
| author_facet | Namara, Regassa E. Bossio, Deborah A. Weligamage, Parakrama Herath, Indika |
| author_sort | Namara, Regassa E. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In Sri Lanka rice is grown under conditions of sub-optimal water and land availability. Thus, innovations such as the System of Rice Intensification (SRI) that can increase productivity and save resources are needed. The objective of this study was to understand how SRI was implemented on farms in Sri Lanka, and the consequences of changes in practices on: 1) input utilisation, 2) agronomic traits of rice, and 3) soil chemical properties. It was found that SRI farmers had made significant changes in their production systems: irrigations, seeding rates and herbicide usage were reduced by 24%, 85% and 95%, respectively, and plant spacing was increased by 60%. Total inputs of nitrogen, phosphorus, and potassium were similar across SRI and conventional plots, but the source of nutrients was different. Yields were variable, but significantly higher on SRI farms, soil available potassium and phosphorus were increased, and SRI plants exhibited tolerance to low moisture stress. |
| format | Journal Article |
| id | CGSpace40756 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| record_format | dspace |
| spelling | CGSpace407562023-06-12T18:54:57Z The practice and effects of the System of Rice Intensification (SRI) in Sri Lanka Namara, Regassa E. Bossio, Deborah A. Weligamage, Parakrama Herath, Indika rice cropping systems soil properties irrigated farming In Sri Lanka rice is grown under conditions of sub-optimal water and land availability. Thus, innovations such as the System of Rice Intensification (SRI) that can increase productivity and save resources are needed. The objective of this study was to understand how SRI was implemented on farms in Sri Lanka, and the consequences of changes in practices on: 1) input utilisation, 2) agronomic traits of rice, and 3) soil chemical properties. It was found that SRI farmers had made significant changes in their production systems: irrigations, seeding rates and herbicide usage were reduced by 24%, 85% and 95%, respectively, and plant spacing was increased by 60%. Total inputs of nitrogen, phosphorus, and potassium were similar across SRI and conventional plots, but the source of nutrients was different. Yields were variable, but significantly higher on SRI farms, soil available potassium and phosphorus were increased, and SRI plants exhibited tolerance to low moisture stress. 2008 2014-06-13T14:48:22Z 2014-06-13T14:48:22Z Journal Article https://hdl.handle.net/10568/40756 en Limited Access Namara, Regassa; Bossio, Deborah; Weligamage, Parakrama; Herath, Indika. 2008. The practice and effects of the System of Rice Intensification (SRI) in Sri Lanka. Quarterly Journal of International Agriculture, 47(1): 5-23. |
| spellingShingle | rice cropping systems soil properties irrigated farming Namara, Regassa E. Bossio, Deborah A. Weligamage, Parakrama Herath, Indika The practice and effects of the System of Rice Intensification (SRI) in Sri Lanka |
| title | The practice and effects of the System of Rice Intensification (SRI) in Sri Lanka |
| title_full | The practice and effects of the System of Rice Intensification (SRI) in Sri Lanka |
| title_fullStr | The practice and effects of the System of Rice Intensification (SRI) in Sri Lanka |
| title_full_unstemmed | The practice and effects of the System of Rice Intensification (SRI) in Sri Lanka |
| title_short | The practice and effects of the System of Rice Intensification (SRI) in Sri Lanka |
| title_sort | practice and effects of the system of rice intensification sri in sri lanka |
| topic | rice cropping systems soil properties irrigated farming |
| url | https://hdl.handle.net/10568/40756 |
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