Optimal Water Level Management for Mitigating GHG Emissions through Water-Conserving Irrigation in An Giang Province, Vietnam
Rational water and fertilizer management approaches and technologies could improve water use efficiency and fertilizer use efficiency in paddy rice cultivation. A promising water-conserving technology for paddy rice farming is the alternate wetting and drying irrigation system, established by the In...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/21/8418 |
| _version_ | 1797466453401665536 |
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| author | Satoshi Ogawa Kyosuke Yamamoto Kenichi Uno Nguyen Cong Thuan Takashi Togami Soji Shindo |
| author_facet | Satoshi Ogawa Kyosuke Yamamoto Kenichi Uno Nguyen Cong Thuan Takashi Togami Soji Shindo |
| author_sort | Satoshi Ogawa |
| collection | DOAJ |
| description | Rational water and fertilizer management approaches and technologies could improve water use efficiency and fertilizer use efficiency in paddy rice cultivation. A promising water-conserving technology for paddy rice farming is the alternate wetting and drying irrigation system, established by the International Rice Research Institute. However, the strategy has still not been widely adopted, because water level measurement is challenging work and sometimes leads to a decrease in the rice yield. For the easy implementation of alternate wetting and drying among farmers, we analyzed a dataset obtained from a farmer’s water management study carried out over a three-year period with three cropping seasons at six locations (<i>n</i> = 82) in An Giang Province, Southern Vietnam. We observed a significant relationship between specific water level management and the rice yield and greenhouse gas emissions during different growth periods. The average water level during the crop period was an important factor in increasing the rice yield and reducing greenhouse gas emissions. The average water level at 2 days after nitrogen fertilization also showed a potential to increase the rice yield. The greenhouse gas emissions were reduced when the number of days of non-flooded soil use was increased by 1 day during the crop period. The results offer insights demonstrating that farmers’ implementation of multiple drainage during whole crop period and nitrogen fertilization period has the potential to contribute to both the rice yield increase and reduction in greenhouse gas emissions from rice cultivation. |
| first_indexed | 2024-03-09T18:40:05Z |
| format | Article |
| id | doaj.art-666905ee72914348996c52cd1df2fa92 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T18:40:05Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-666905ee72914348996c52cd1df2fa922023-11-24T06:47:46ZengMDPI AGSensors1424-82202022-11-012221841810.3390/s22218418Optimal Water Level Management for Mitigating GHG Emissions through Water-Conserving Irrigation in An Giang Province, VietnamSatoshi Ogawa0Kyosuke Yamamoto1Kenichi Uno2Nguyen Cong Thuan3Takashi Togami4Soji Shindo5Japan International Research Center for Agricultural Sciences (JIRCAS), Crop, Livestock and Environment Division, 1-1 Ohwashi, Tsukuba 305-8686, Ibaraki, Japane-kakashi Section, CPS Technology Planning Department, Technology Planning & Development Division, Service Planning Technology Division, SoftBank Co., 1-7-1 Kaigan, Minato-ku, Tokyo 105-7529, Tokyo, JapanRural Development Division, JIRCAS, Tsukuba 305-8686, Ibaraki, JapanCollege of Environment and Natural Resources, Can Tho University, Can Tho 94000, Vietname-kakashi Section, CPS Technology Planning Department, Technology Planning & Development Division, Service Planning Technology Division, SoftBank Co., 1-7-1 Kaigan, Minato-ku, Tokyo 105-7529, Tokyo, JapanRural Development Division, JIRCAS, Tsukuba 305-8686, Ibaraki, JapanRational water and fertilizer management approaches and technologies could improve water use efficiency and fertilizer use efficiency in paddy rice cultivation. A promising water-conserving technology for paddy rice farming is the alternate wetting and drying irrigation system, established by the International Rice Research Institute. However, the strategy has still not been widely adopted, because water level measurement is challenging work and sometimes leads to a decrease in the rice yield. For the easy implementation of alternate wetting and drying among farmers, we analyzed a dataset obtained from a farmer’s water management study carried out over a three-year period with three cropping seasons at six locations (<i>n</i> = 82) in An Giang Province, Southern Vietnam. We observed a significant relationship between specific water level management and the rice yield and greenhouse gas emissions during different growth periods. The average water level during the crop period was an important factor in increasing the rice yield and reducing greenhouse gas emissions. The average water level at 2 days after nitrogen fertilization also showed a potential to increase the rice yield. The greenhouse gas emissions were reduced when the number of days of non-flooded soil use was increased by 1 day during the crop period. The results offer insights demonstrating that farmers’ implementation of multiple drainage during whole crop period and nitrogen fertilization period has the potential to contribute to both the rice yield increase and reduction in greenhouse gas emissions from rice cultivation.https://www.mdpi.com/1424-8220/22/21/8418alternate wetting and dryingmultiple drainagewater levelrice yieldclimate change |
| spellingShingle | Satoshi Ogawa Kyosuke Yamamoto Kenichi Uno Nguyen Cong Thuan Takashi Togami Soji Shindo Optimal Water Level Management for Mitigating GHG Emissions through Water-Conserving Irrigation in An Giang Province, Vietnam Sensors alternate wetting and drying multiple drainage water level rice yield climate change |
| title | Optimal Water Level Management for Mitigating GHG Emissions through Water-Conserving Irrigation in An Giang Province, Vietnam |
| title_full | Optimal Water Level Management for Mitigating GHG Emissions through Water-Conserving Irrigation in An Giang Province, Vietnam |
| title_fullStr | Optimal Water Level Management for Mitigating GHG Emissions through Water-Conserving Irrigation in An Giang Province, Vietnam |
| title_full_unstemmed | Optimal Water Level Management for Mitigating GHG Emissions through Water-Conserving Irrigation in An Giang Province, Vietnam |
| title_short | Optimal Water Level Management for Mitigating GHG Emissions through Water-Conserving Irrigation in An Giang Province, Vietnam |
| title_sort | optimal water level management for mitigating ghg emissions through water conserving irrigation in an giang province vietnam |
| topic | alternate wetting and drying multiple drainage water level rice yield climate change |
| url | https://www.mdpi.com/1424-8220/22/21/8418 |
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