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  1. JIRCAS Working Report
  2. No. 94

3-1. Challenges and opportunities of utilizing small reservoirs for rice irrigation in northern Ghana

https://doi.org/10.34556/0002000780
https://doi.org/10.34556/0002000780
4ca196b2-7718-451a-8646-4736ce8b1d7a
名前 / ファイル ライセンス アクション
jircas_working_report94-_57-68.pdf jircas_working_report94-_57-68 (1.1 MB)
Item type 国際農研デフォルトアイテムタイプ(フル)(1)
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

en Koide, Junji
Japan International Research Center for Agricultural Sciences

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Yokoyama, Shigeki

× Yokoyama, Shigeki

en Yokoyama, Shigeki
Japan Agricultural Development and Extension Association

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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
位置情報
位置情報(自由記述) Ghana
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