Evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in Colombian rice production
Rice demand in Latin America is increasing rapidly, but few studies have identified management practices to reduce water demand and soil greenhouse gas (GHG) emissions for irrigated rice systems in this region. Therefore, we tested the hypothesis that alternate wetting and drying (AWD) irrigation co...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Elsevier
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/137633 |
| _version_ | 1855538500642799616 |
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| author | Loaiza, Sandra Verchot, Louis V. Valencia, Drochss Guzmán, Patricia Amézquita, Nelson Garcés, Gabriel Puentes, Oscar Trujillo, Catalina Chirinda, Ngonidzashe Pittelkow, Cameron M. |
| author_browse | Amézquita, Nelson Chirinda, Ngonidzashe Garcés, Gabriel Guzmán, Patricia Loaiza, Sandra Pittelkow, Cameron M. Puentes, Oscar Trujillo, Catalina Valencia, Drochss Verchot, Louis V. |
| author_facet | Loaiza, Sandra Verchot, Louis V. Valencia, Drochss Guzmán, Patricia Amézquita, Nelson Garcés, Gabriel Puentes, Oscar Trujillo, Catalina Chirinda, Ngonidzashe Pittelkow, Cameron M. |
| author_sort | Loaiza, Sandra |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rice demand in Latin America is increasing rapidly, but few studies have identified management practices to reduce water demand and soil greenhouse gas (GHG) emissions for irrigated rice systems in this region. Therefore, we tested the hypothesis that alternate wetting and drying (AWD) irrigation could maintain crop yields while mitigating global warming potential (GWP) compared to a conventional system with recommended irrigation and nutrient management practices for tropical rice in Colombia. Over four consecutive growing seasons, we monitored CH4 and N2O emissions, grain yield, and water consumption for two AWD treatments (AWD5 cm and AWD10 cm - where water drained to depths of 5 and 10 cm below the soil surface, respectively) and a control, in which the field was drained multiple times during fertilizer applications and then continuously flooded until harvest. The control had the highest water use across all rice seasons, with values ranging from 9260 to 16559 m3 ha−1 harvest−1. Implementation of AWD reduced cumulative water use by 19–56%, especially in dry seasons. Both AWD treatments significantly reduced cumulative CH4 emissions by 72–100%, which is consistent with previous research. A new finding is that AWD also decreased N2O emissions by 12–70%, which was attributed to management of soil moisture during fertilizer application events. In total, AWD reduced GWP by 25–73% compared to the control, with minimal impacts on crop productivity. Rice yields ranged from 5.2 to 8.2 Mg ha−1, with no significant difference among treatments in three of four seasons. This study shows that AWD saves irrigation water while greatly reducing GWP with little agronomic penalty, suggesting this technology could be a promising strategy for GHG mitigation in tropical rice in Colombia. Because there are important barriers to AWD adoption, future work should explore challenges at the farm-level as well as changes in policy, irrigation infrastructure, and institutional arrangements to understand the potential for broader implementation. |
| format | Journal Article |
| id | CGSpace137633 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1376332025-12-08T09:54:28Z Evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in Colombian rice production Loaiza, Sandra Verchot, Louis V. Valencia, Drochss Guzmán, Patricia Amézquita, Nelson Garcés, Gabriel Puentes, Oscar Trujillo, Catalina Chirinda, Ngonidzashe Pittelkow, Cameron M. greenhouse gas emissions water management yield response factor nitrous oxide methane alternate wetting and drying irrigation methods technological changes-technical progress potential temperature Rice demand in Latin America is increasing rapidly, but few studies have identified management practices to reduce water demand and soil greenhouse gas (GHG) emissions for irrigated rice systems in this region. Therefore, we tested the hypothesis that alternate wetting and drying (AWD) irrigation could maintain crop yields while mitigating global warming potential (GWP) compared to a conventional system with recommended irrigation and nutrient management practices for tropical rice in Colombia. Over four consecutive growing seasons, we monitored CH4 and N2O emissions, grain yield, and water consumption for two AWD treatments (AWD5 cm and AWD10 cm - where water drained to depths of 5 and 10 cm below the soil surface, respectively) and a control, in which the field was drained multiple times during fertilizer applications and then continuously flooded until harvest. The control had the highest water use across all rice seasons, with values ranging from 9260 to 16559 m3 ha−1 harvest−1. Implementation of AWD reduced cumulative water use by 19–56%, especially in dry seasons. Both AWD treatments significantly reduced cumulative CH4 emissions by 72–100%, which is consistent with previous research. A new finding is that AWD also decreased N2O emissions by 12–70%, which was attributed to management of soil moisture during fertilizer application events. In total, AWD reduced GWP by 25–73% compared to the control, with minimal impacts on crop productivity. Rice yields ranged from 5.2 to 8.2 Mg ha−1, with no significant difference among treatments in three of four seasons. This study shows that AWD saves irrigation water while greatly reducing GWP with little agronomic penalty, suggesting this technology could be a promising strategy for GHG mitigation in tropical rice in Colombia. Because there are important barriers to AWD adoption, future work should explore challenges at the farm-level as well as changes in policy, irrigation infrastructure, and institutional arrangements to understand the potential for broader implementation. 2024-02 2024-01-12T09:15:11Z 2024-01-12T09:15:11Z Journal Article https://hdl.handle.net/10568/137633 en Open Access application/pdf Elsevier Loaiza, S.; Verchot, L.; Valencia, D.; Guzmán, P.; Amezquita, N.; Garcés, G.; Puentes, O.; Trujillo, C.; Chirinda, N.; Pittelkow, C.M. (2023) Evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in Colombian rice production. Agriculture, Ecosystems & Environment 360: 108787. ISSN: 0167-8809 |
| spellingShingle | greenhouse gas emissions water management yield response factor nitrous oxide methane alternate wetting and drying irrigation methods technological changes-technical progress potential temperature Loaiza, Sandra Verchot, Louis V. Valencia, Drochss Guzmán, Patricia Amézquita, Nelson Garcés, Gabriel Puentes, Oscar Trujillo, Catalina Chirinda, Ngonidzashe Pittelkow, Cameron M. Evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in Colombian rice production |
| title | Evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in Colombian rice production |
| title_full | Evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in Colombian rice production |
| title_fullStr | Evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in Colombian rice production |
| title_full_unstemmed | Evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in Colombian rice production |
| title_short | Evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in Colombian rice production |
| title_sort | evaluating greenhouse gas mitigation through alternate wetting and drying irrigation in colombian rice production |
| topic | greenhouse gas emissions water management yield response factor nitrous oxide methane alternate wetting and drying irrigation methods technological changes-technical progress potential temperature |
| url | https://hdl.handle.net/10568/137633 |
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