Impacts of climate change on crop and irrigation water requirement in the Savannah regions of Ghana
Irrigation is important for food security, however, water requirements for sustainable irrigation may be affected by climate change. The study analysed water requirements of two commonly cultivated crops in the dry season in the Ghanaian Savannah regions under baseline and future periods. Crop water...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-09-01
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| Series: | Journal of Water and Climate Change |
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| Online Access: | http://jwcc.iwaponline.com/content/13/9/3338 |
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| author | Awo Boatemaa Manson Incoom Kwaku Amaning Adjei Samuel Nii Odai Komlavi Akpoti Ebenezer Kwadwo Siabi |
| author_facet | Awo Boatemaa Manson Incoom Kwaku Amaning Adjei Samuel Nii Odai Komlavi Akpoti Ebenezer Kwadwo Siabi |
| author_sort | Awo Boatemaa Manson Incoom |
| collection | DOAJ |
| description | Irrigation is important for food security, however, water requirements for sustainable irrigation may be affected by climate change. The study analysed water requirements of two commonly cultivated crops in the dry season in the Ghanaian Savannah regions under baseline and future periods. Crop water requirement (CWR) and crop irrigation requirement (CIR) were lowest in baseline periods and increased in the 2020s, 2050s, and 2080s for RCP 4.5 and RCP 8.5 at all locations. CIR was higher for tomato as compared to onions for most locations. Seasonal changes in the CWR ranged from 2–9, 3–12, and 3–12% and 2–8 3–12% and 5–18% for the 2020s, 2050s and 2080s under RCP 4.5 and RCP 8.5, respectively, for both the crops. Bole and Zuarungu recorded highest increases in CWR for tomato, whereas the least change was observed at Yendi for onions. Changes in seasonal CIR ranged from 3–19, 2–21, and 6–22%, respectively, for the 2020s, 2050s and 2080s for RCP 4.5. Under RCP 8.5, changes in seasonal CIR ranged from 3–23, 5–23, and 6–27% were observed for the 2020s, 2050s, and 2080s, respectively. Highest increases in CIR were noticed at Bole and Zuarungu for tomato, whereas the least change was observed at Wenchi for onions. Findings of the study support zero hunger and climate action, goals 2 and 13 of the Sustainable Development Goals (SDGs). HIGHLIGHTS
The study analysed water requirements of two commonly cultivated crops in the dry season in the Savannah regions of Ghana.;
Crop and irrigation water requirements were generally lowest in baseline periods and increased in the 2020s, 2050s, and 2080s under RCP 4.5 and RCP 8.5.;
Highest increases in irrigation requirement were noticed at Bole and Zuarungu for tomato, whereas the least change was observed at Wenchi for onions.; |
| first_indexed | 2024-04-11T08:48:14Z |
| format | Article |
| id | doaj.art-16bf84ef91cf44908b93d5423f773ab7 |
| institution | Directory Open Access Journal |
| issn | 2040-2244 2408-9354 |
| language | English |
| last_indexed | 2024-04-11T08:48:14Z |
| publishDate | 2022-09-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water and Climate Change |
| spelling | doaj.art-16bf84ef91cf44908b93d5423f773ab72022-12-22T04:33:52ZengIWA PublishingJournal of Water and Climate Change2040-22442408-93542022-09-011393338335610.2166/wcc.2022.129129Impacts of climate change on crop and irrigation water requirement in the Savannah regions of GhanaAwo Boatemaa Manson Incoom0Kwaku Amaning Adjei1Samuel Nii Odai2Komlavi Akpoti3Ebenezer Kwadwo Siabi4 Department of Fisheries and Water Resources, University of Energy and Natural Resources, Sunyani, Ghana Regional Water and Environmental Sanitation Centre, Kumasi (RWESCK), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana Office of the Vice-Chancellor, Accra Technical University, Accra, Ghana International Water Management Institute (IWMI), Accra, Ghana Earth Observation Research and Innovation Center (EORIC), University of Energy and Natural Resources, P.O. Box 214, Sunyani, Ghana Irrigation is important for food security, however, water requirements for sustainable irrigation may be affected by climate change. The study analysed water requirements of two commonly cultivated crops in the dry season in the Ghanaian Savannah regions under baseline and future periods. Crop water requirement (CWR) and crop irrigation requirement (CIR) were lowest in baseline periods and increased in the 2020s, 2050s, and 2080s for RCP 4.5 and RCP 8.5 at all locations. CIR was higher for tomato as compared to onions for most locations. Seasonal changes in the CWR ranged from 2–9, 3–12, and 3–12% and 2–8 3–12% and 5–18% for the 2020s, 2050s and 2080s under RCP 4.5 and RCP 8.5, respectively, for both the crops. Bole and Zuarungu recorded highest increases in CWR for tomato, whereas the least change was observed at Yendi for onions. Changes in seasonal CIR ranged from 3–19, 2–21, and 6–22%, respectively, for the 2020s, 2050s and 2080s for RCP 4.5. Under RCP 8.5, changes in seasonal CIR ranged from 3–23, 5–23, and 6–27% were observed for the 2020s, 2050s, and 2080s, respectively. Highest increases in CIR were noticed at Bole and Zuarungu for tomato, whereas the least change was observed at Wenchi for onions. Findings of the study support zero hunger and climate action, goals 2 and 13 of the Sustainable Development Goals (SDGs). HIGHLIGHTS The study analysed water requirements of two commonly cultivated crops in the dry season in the Savannah regions of Ghana.; Crop and irrigation water requirements were generally lowest in baseline periods and increased in the 2020s, 2050s, and 2080s under RCP 4.5 and RCP 8.5.; Highest increases in irrigation requirement were noticed at Bole and Zuarungu for tomato, whereas the least change was observed at Wenchi for onions.;http://jwcc.iwaponline.com/content/13/9/3338climate changecrop water requirementirrigation water requirementsavannah zone |
| spellingShingle | Awo Boatemaa Manson Incoom Kwaku Amaning Adjei Samuel Nii Odai Komlavi Akpoti Ebenezer Kwadwo Siabi Impacts of climate change on crop and irrigation water requirement in the Savannah regions of Ghana Journal of Water and Climate Change climate change crop water requirement irrigation water requirement savannah zone |
| title | Impacts of climate change on crop and irrigation water requirement in the Savannah regions of Ghana |
| title_full | Impacts of climate change on crop and irrigation water requirement in the Savannah regions of Ghana |
| title_fullStr | Impacts of climate change on crop and irrigation water requirement in the Savannah regions of Ghana |
| title_full_unstemmed | Impacts of climate change on crop and irrigation water requirement in the Savannah regions of Ghana |
| title_short | Impacts of climate change on crop and irrigation water requirement in the Savannah regions of Ghana |
| title_sort | impacts of climate change on crop and irrigation water requirement in the savannah regions of ghana |
| topic | climate change crop water requirement irrigation water requirement savannah zone |
| url | http://jwcc.iwaponline.com/content/13/9/3338 |
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