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3-1. Challenges and opportunities of utilizing small reservoirs for rice irrigation in northern Ghana
https://doi.org/10.34556/0002000780
https://doi.org/10.34556/00020007804ca196b2-7718-451a-8646-4736ce8b1d7a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
jircas_working_report94-_57-68 (1.1 MB)
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| Item type | 国際農研デフォルトアイテムタイプ（フル）(1) | |||||||||
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| 公開日 | 2025-04-03 | |||||||||
| タイトル | ||||||||||
| タイトル | 3-1. Challenges and opportunities of utilizing small reservoirs for rice irrigation in northern Ghana | |||||||||
| 言語 | en | |||||||||
| 作成者 |
Koide, Junji
× Koide, Junji
ORCID
0000-0003-1726-4400
× Yokoyama, Shigeki
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | Rainwater-harvesting reservoirs in Africa offer substantial potential to support rice irrigation and boost productivity in rainfed lowland areas. However, the effectiveness of such irrigation initiatives hinges on multiple factors beyond hydrological conditions, including social regulations governing irrigation and facility maintenance, availability of labor and financial resources, farmers’ willingness to engage in rice irrigation, and economic viability, which have been underrepresented in the literature. This chapter seeks to address these knowledge gaps and examine the challenges and opportunities of rice irrigation using small reservoirs in northern Ghana, drawing upon field survey findings by Koide et al. (2015) and Yokoyama and Koide (2018). These findings highlight the importance of restricting rice irrigation to supplementary practices during the rainy season, considering that local reservoirs experience reduced water levels during the dry season, prioritizing domestic water supply. Key challenges to the implementation of supplementary irrigation include the absence of customary rules that regulate water use to enable timely irrigation and the competition for labor and financial resources between intensified rice farming and the cultivation of upland crops. There is also a lack of institutional mechanisms to address these farm resource constraints. Based on an analysis of local major crop production costs and on-farm trials of supplementary rice irrigation, the authors further demonstrated that rice yields under supplementary irrigation are increased to a level that exceeds the profitability of pepper, the region’s most lucrative crop. These findings suggest that supplementary irrigation can enhance rice productivity and support its expansion as a cash crop, potentially replacing other high value crops. | |||||||||
| 言語 | en | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | Chapter 3: Issues and model-based optimization of smallholder technology adoption in lowland cropping systems : Case of irrigation technology in northern Ghana | |||||||||
| 言語 | en | |||||||||
| 出版者 | ||||||||||
| 出版者 | Japan International Research Center for Agricultural Sciences | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_3248 | |||||||||
| 資源タイプ | book part | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| ID登録 | ||||||||||
| ID登録 | 10.34556/0002000780 | |||||||||
| ID登録タイプ | JaLC | |||||||||
| 関連情報 | ||||||||||
| 関連タイプ | isPartOf | |||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | https://doi.org/10.34556/0002000771 | |||||||||
| 関連名称 | Application of farm management models for decision support to smallholder farmers in sub-Saharan Africa | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | PISSN | |||||||||
| 収録物識別子 | 1341-710X | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA11159468 | |||||||||
| 書誌情報 |
en : JIRCAS Working Report : Application of farm management models for decision support to smallholder farmers in sub-Saharan Africa 巻 94, p. 57-68, 発行日 2025-03-28 |
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| 位置情報 | ||||||||||
| 位置情報（自由記述） | Ghana | |||||||||
