• Sawah Technology(1) Rice and related statistics in SSA during 1961-2016 and world historical data during 600-2016
  (1-1) Western, Eastern/Middle/Southern, and Sub Saharan Africa (SSA), Asia during 1961-2016 and some world historical data during 600-2016 [Paper PDF(1.3MB) (21st Aug. 2018), PPt PDF(1.2MB) (23rd Aug. 2017)]
  (1-2) SSA's Paddy Production No.1 to No.16 countries [PDF(4.2MB)] (23rd Aug. 2017)
  (1-3) SSA's Paddy Production No.17 to No.24 and below countries [PDF(3.4MB)] (23rd Aug. 2017)
  (1-4) Asia's Paddy Production No.1 to No.10 and some below countries [PDF(2.5MB)] (23rd Aug. 2017)
• Sawah Technology(2) Background and Sawah System Evolution for Rice Revolution in Sub Saharan Africa (3rd Aug. 2018)
  [PPt PDF(14.0MB)] : Divided Files Part1(3.5MB), Part2(3.7MB), Part3(4.2MB), Part4(3.6MB)]
• Sawah Technology(3) Principles: Sawah hypothesis (1) for scientific foundation of technology evolution and Sawah hypothesis (2) for intensive sustainability through multi-functionality of Sawah systems in watershed agroforestry (Africa SATOYAMA System)
  [Paper PDF(7.4MB) : Divided Files Part1(3.1MB), Part2(2.9MB), Part3(2.5MB) ] (3rd Aug. 2018)
  [PPt PDF(4.8MB) : Divided Files Part1(2.5MB), Part2(2.5MB)] (14th Dec. 2016)
• Sawah Technology(4) Practices and Potential of irrigated sawah system development and sawah based rice farming by farmers' self-support efforts
  [Paper PDF(8.7MB) : Divided Files Part1(3.5MB), Part2(3.4MB), Part3(3.0MB)] (30th Oct. 2018)
• Sawah Technology(5) Kebbi Rice Revolution, Nigeria
  [Paper PDF(14.7MB) : Divided Files Part1(5.5MB), Part2(5.0MB), Part3(5.1MB)] (25th Sep. 2018)
• Sawah Technology(5 Supplement) Google earth observation on endogenous sawah system development throughout the Kebbi state, during 2010-2017
  [Paper PDF(11.1MB) : Divided Files Part1(3.9MB), Part2(3.8MB), Part3(3.7MB)] (9th Oct. 2018)
• アフリカ水田農法の和文報告最新バージョン
  <Paper> （2018年6月18日）
  
  • (I) 稲作統計、水田進化とナイジェリアの灌漑稲作の現状、水田仮説1と英国のエンクロージャーの対比、アフリカ水田農法の基本技術、6つの戦略技術の比較総括 [PDF(9.4MB)]
  • (II-1) ナイジェリア、ケッビ州稲作革命Kebbi Rice Revolution により谷地田農法からアフリカ水田農法へ進化 [PDF(13.0MB)]
  • (II-2) 2010-2017 年のGoogle Earthに見るケッビ州の主要河川、Rima 川、Zamfara 川、Ka 川およびNiger 川氾濫原における農民の自力ポンプ灌漑水田開発と整備の拡大状況 [PDF(14.3MB)]
  • (III-1) Google Earth と現地調査に基づくサブサハラアフリカトップ4 稲作国、ナイジェリア、マダガスカル、タンザニア、マリの水田進化の比較評価 [PDF(13.8MB)]
  • (III-2) Google Earth と現地調査に基づくサブサハラアフリカ5-8 位稲作国、ギニア、象牙海岸、シエラレオーネ、セネガルの水田進化の比較評価 [PDF(15.6MB)]
  • (IV) 持続可能な稲作革命の実現とアジア・アフリカ連携による平和構築 [PDF(6.5MB)]
  <PPt> (1) 1961-2014年のアフリカとアジアの米生産と関連統計（2017年8月23日）
  
  • (1-1) 西アフリカ, 東・中央・南部アフリカ, サブサハラアフリカ及びアジア地域総括 [PDF(1.2MB)]
  • (1-2) サブサハラアフリカの籾生産量ランク1-16位の国とエジプト [PDF(4.2MB)]
  • (1-3) サブサハラアフリカ籾生産量ランク17-24位とそれ以下の国 [PDF(3.4MB)]
  • (1-4) アジアの籾生産量ランク1-10位とそれ以下の国 [PDF(2.5MB)]

• (Paper) Alarima C.I., Awotunde J.M., Adamu C.O., Akerele D., Masunaga T., Wakatsuki T. 2018. Adoption of sawah eco-technology in rice production by farm households in Kebbi State, Nigeria. Journal of Water and Land Development, No. 37, 11-17. [PDF(241KB)]
• The Giant Stride of NCAM towards Food Security in Nigeria, 27 September 2017.
• (Presentation) アフリカ水田農法Sawah Technologyによる食糧増産と環境保全, 難民定住化への挑戦, 日本アフリカ学会公開講演会, 2016年6月5日, 日本大学藤沢学舎 [PPt PDF(16.3MB)]
• (Nigeria) "Small Scale Mechanization in Rice Production", NCAM Presentation at GIZ, Abuja, 3rd-4th May 2016 [PPt PDF(3MB)]
• Sawah Technology Transfer and Dissemination through Africa Rice Center's SMART-IV project supported by International Cooperation Division of Ministry of Agriculture, Forestry, and Fisheries (MAFF), Japan
• Out-scalling Smart-valleys to boost rice productivity, AfricaRice 2016 Annual Report published in 2018.
  [Related pages: p15, 16 PDF(496KB), Full page ->AfricaRice website]
• Sawah Technology for Rehabilitating the rice sector in post-conflict countries of Liberia and Sierra Leone, AfricaRice 2015 Annual Report published in 2016.
  [Related pages: p16, 20 PDF(940KB), Full page ->AfricaRice website]
• Scaling up of Sawah Technology in Benin and Togo, AfricaRice 2014 Annual Report published in 2015
  [AfricaRice-AnnualReport-2014: p11-12, 32-34 PDF(1.1MB), Full page ->AfricaRice website]
• Sawah Technology Introduction under Japan and AfricaRice 35 years partnership
• A SMART choice for Africa’s inland-valley rice farmers. Rice Today, published by IRRI, Mar 2, 2016.
• High Scalability of Sawah Technology in Sub Sahara Africa, AfricaRice 2013 Annual Report published in 2014
  [AfricaRice-AnnualReport-2013: p6, 14-15, 41-42 PDF(267KB), Full page ->AfricaRice website]
  
• Working with farmers to improve control in inland valleys using Sawah Technology, AfricaRice 2012 Annual Report published in 2013
  [AfricaRice-AnnualReport-2012: p14-16 PDF(365KB), Full page ->AfricaRice website]
• (Book) "Proceedings of the First International Workshop on Sawah Eco-technology and Rice Farming in Sub-Saharan Africa," 22nd-24th Nov. 2011, Kumasi, Ghana.
  [Full page PDF(28.1MB)],
  [Divided Files: Section 1(2.6MB), Section 2 pp.13-31(4.8MB), pp.32-49(2.4MB), pp.50-74(3.0MB), pp.75-111(3.9MB), pp.112-132(3.2MB), pp.133-169(2.9MB), pp.170-200(3.7MB), Section 3(2.0MB)]
• (Presentation) Wakatsuki T., Multi functionality of Sawah system: why Sawah based rice farming is critical for Africa's Green revolution? SMART IV kickoff workshop, 16-17th August 2010, Africa Rice, Cotonou.
  [PDF(5.3MB) : Divided Files Part1(2.7MB), Part2(2.7MB)]
• (Presentation) Wakatsuki T., Buri M.M., Bam R.K., Oladele O.I. and Ademiluyi Y.S., Farmers' personal irrigated sawah systems to realize the green revolution and Africa's rice potential. SMART IV kickoff workshop, 16-17th August 2010, Africa Rice, Cotonou.
  [PDF(7.0MB) : Divided Files Part1(3.7MB), Part2(3.5MB)]
• (Presentation) Buri M.M., Abe S., Issaka R.N., Kiepe P., Wakatsuki T., Kawano N. and Fujimoto N., Soil fertility potential for rice production in West African lowlands. SMART IV kickoff workshop, 16-17th August 2010, Africa Rice, Cotonou.
  [PDF(6.1MB) : Divided Files Part1(3.1MB), Part2(3.2MB)]
• (Book) Proceedings of the International Workshop on Integrated Watershed Management of Inland Valley-Ecotechnology Approach, 6th-8th February 2001, Novotel Accra, Ghana.
  [Full page PDF(16.5MB)],
  [Divided Files: pp.1-5(1.3MB), pp.6-15(3.2MB), pp.16-27(3.8MB), pp.28-40(4.6MB), pp.41-44(1.0MB), pp.45-55(2.7MB)]
• Sawah Technology Research at IITA, International Institute of Trpoical Agriculture, under HIROSE project, 05 June 2008. [PDF(380KB)]
• (Paper) 阿部進, 藤本直也, 若月利之, 西アフリカの低湿地における参加型水田開発手法. 水土の知 (農業農村工学会誌), 83(10): 853-858, 2015. [PDF(3.9MB)]
• アフリカ水田農法(Sawah Technology)による稲作革命の実現と土と水と平和構築（2015年5月21日，東京農大特別講義；2015年5月24日，京都大学地球環境フォーラム；2015年9月11日，土壌肥料学会公開講演会）
  [Paper PDF(3.3MB)],
  [PPt PDF(13.5MB)] : Divided Files Part1(6.1MB), Part2(7.5MB)]
• (2015年エッセイと関連する過去の論文)
• アフリカ水田農法（Sawah Technology)による稲作革命の実現, 現代農業, 3月号：350-353, 2015年. [記事 PDF(487KB)] [補足PDF(10.7MB)]
• アフリカでの28年の水田Sawah研究を支えてくれた科研費, 私と科研費（日本学術振興会）, No.62, 2014年3月.
• JSPS Grants-in-Aid: A Crucial Source for Continuing My Suiden Sawah Research in Africa over 28 Years, KAKENHI Essay Series, No.62, March 2014.
• アフリカ発谷地田農法で新・緑の革命, 現代農業, 11月号：346-350, 2009. [PDF(3MB)]
• アフリカで求められる「緑の革命」 (特集 食料危機に直面する世界と日本), 農業と経済, 74(14)：77-86, 2008年12月. [PDF(4.8MB)]
• 地球環境保全に貢献する水田農業, 農業と経済, 74(7)：131-137, 2008年7月. [PDF(3.6MB)]
• (Paper) "Asian African Collaboration for Sustainable African Green Revolution through Sawah and Satoyama Eco-technology to Combat Global Food and Ecology Crisis in 2025", In the Proceedings of 11th ESAFS, Bogor, Indonesia, 21October2013. [PDF(2.4MB)]
• (Presentation) "Asian African Collaboration for Sustainable African Green Revolution through Sawah and Satoyama Eco-technology to Combat Global Food and Ecology Crisis in 2025", 11th ESAFS, Bogor, Indonesia, 21October2013. [PDF(4.4MB)]
• (Presentation) "Achievements of Sawah ecotechnology programme in Nigeria" by Ademiluyi YS National coordinator 27July2013. [PDF(8.9MB)]
• (Paper)「アフリカにおけるSawah灌漑水田稲作技術普及の展望」熱帯農業学会誌, 6(1)：43-50, 2013年. [PDF(2.9MB)]
• (Paper)「アフリカにおけるSawah灌漑水田稲作技術普及の質疑応答」熱帯農業学会誌, 6(1)：58-60, 2013年. [PDF(352KB)]
• (Paper)「Sawah技術イノベーションの社会実装によるアフリカ稲作の緑の革命実現」学術会議環境工学連合講演会, 2013年4月19日, 東京. [PDF(1.8MB)]
• (Presentation)「Sawah技術イノベーションの社会実装によるアフリカ稲作の緑の革命実現」第26回学術会議環境環境工学連合, 2013年4月19日, 東京. [PDF(12.7MB)]
• Presentation and Paper at the 2nd Africa Rice Congress, 22-26 March, 2010, Bamako, Mali. [PPt PDF(13.6MB), Paper PDF(831KB) ]
• (Paper) Fu R.H.Y., Abe S.S., Wakatsuki T. and Maruyama M., Traditional farmer-managed irrigation system in Central Nigeria. Japan Agricultural Research Quarterly, 44(1), 53-60, 2010. [PDF ->J-STAGE website]
• (Paper)「水田農業の普及によるアフリカの緑の革命実現」, 土壌の物理性, 112号：13-25, 2009年. [PDF(11.4MB)]
• Presentation at the 1st Africa Rice Rice Congress, 31 July to 4 August 2006, Dar es Salaam, Tanzania.
• Wakatsuki T., Keynote: Sustainable intensification and diversification strategies for African rice-based cropping systems. [PDF(3.4MB)]
• Fashola O., Aliyu J. and Wakatsuki T., Participatory approach to sawah rice technology dissemination to farmers cultivating inland valleys in Nigeria. [PDF(4.1MB)]
• (Paper) Wakatsuki T. and Masunaga T., Ecological engineering for sustainable food production and the restoration of degraded watersheds in toropics of low pH soils: Focus on West Africa. Soil Sci. Plant Nutr., 51(5), 629-636, 2005. [PDF(4.1MB)]
• (Paper) Ofori J., Hisatomi Y., Kamidouzono A., Masunaga T. and Wakatsuki T., Performance of Rice Cultivars in Various Sawah Ecosystems Developed in Inland Valleys, Ashanti Region, Ghana. Soil Science and Plant Nutrition, 51(4), 469-476, 2005. [PDF(856KB)]
• (Paper)「アフリカ水田稲作開発協力史その1台湾」, 国際農林業協力, Vol.26 No.3：17-29, 2003年. [PDF(5.2MB)]
• (Book) Hsieh Sung-Ching, "Agricultural Technology Transfer to Developing Countries". National Pingtung University of Science and Technology Press, 2003.
• Introduction & Part 1: General Description of Technology Transfer(pp.1-14) [PDF(663KB)]
• Part 5: Case Studies on Technology Transfer for Rice Production to Africa(pp.165-232) [PDF(4.3MB)]
• (Book) "Restoration of Inland Valley Ecosystems in West Africa", Edited by Shohei HIROSE and Toshiyuki WAKATSUKI, Association of Agriculture & Forestry Statistics, 2002.
• Content and Executive Summary [PDF(17.2MB)]
• Chapter 1  Sustainable Agricultural Development of West Africa during Global Environmental Crises [PDF(3.9MB)]
• Chapter 2  Ecological Environment of West Africa [PDF(3.8MB)]
• Chapter 3  Traditional Agriculture and Crop Production ―Case studies in the Guinea Savanna Zone [PDF(4.0MB)]
• Chapter 4  People and Forests in Guinea Savanna [PDF(4.9MB)]
• Chapter 5  Ecological Anthropological Study on Daily Herding Activities of Pastoral Fulbe in Central Nigeria [PDF(3.9MB)]
• Chapter 6  On-farm Demonstration Studies for the Restoration of Ecological Environment and Rural Life
  [PDF(9.1MB): Divided Files Part1(4.7MB), Part2(4.5MB)]
• Chapter 7  Conclusion: Integrated watershed management by the ecotechnology approach [PDF(2.0MB)]
• (Paper) 若月利之, 西アフリカにおける自立的展開が可能な小規模谷地田開発, アフリカの農業・農林開発−TICADに向けて. 農業土木学会誌, 70(11): 1050-1055, 2002. [PDF(3.2MB)]
• (Paper) Asubonteng K.O., Kubota D., Hayashi K., Masunaga T., Wakatsuki T. and Otoo E., Effect of a sawah-based farming system on rice cultivation in the inland valley bottom of the Ashanti region, Ghana. Tropics, 10(4), 555-564, 2001. [PDF(2.3MB)]
• (Paper) Buri M.M., Masunaga T. and Wakatsuki T., Sulfur and zinc levels as limiting factors to rice production in West Africa lowlands. Geoderma, 94, 23-42, 2000. [PDF(282KB)]
• 若月利之, アジア開発経験及びそのアフリカにおける適用可能性−西アフリカにおけるアジア諸国の水田稲作開発プロジェクトの比較と評価 (Transfer of Asian Experiences on the African Development in 21st Century: Comparative Study and Evaluation on the Asian Collaborated Sawah Based Rice Development Projects in West Africa). 国際開発高等教育機構 (FASID) /外務省委託, 平成10年度開発援助研究成果報告書, FASID, 東京, 1999. [PDF(8.5MB)]
• (Paper) "Sawah Systems for Integrated Watershed Management of Small Inland Valleys in West Africa", In FAO ed., Water Reports 17, p.45-60, 1998. [PDF(5.8MB)]
• (Paper) Ishida F., Kamidouzono A. and Wakatsuki T., Indigenous Rice-Based Lowland Farming Systems of Nupe, Nigeria. Jpn. J. Trop. Agr., 42(1): 18-28, 1998. [PDF(7.4MB)]
• (Book)「西アフリカ・サバンナの生態環境の修復と農村の再生」, 廣瀬昌平・若月利之編著, 農林統計協会, 1997年（絶版）.
• 目次と著者 [PDF(415KB)]
• 第1章　西アフリカにおける地球環境問題と持続的農業の展望 [PDF(4.0MB)]
• 第2章　西アフリカの生態環境 [PDF(4.0MB)]
• 第3章　ギニアサバンナ帯における伝統的農業と作物生産 [PDF(5.5MB)]
• 第4章　ギニアサバンナの人と森林 [PDF(5.1MB)]
• 第5章　中部ナイジェリアにおける牧畜フルベの牧畜活動に関する生態人類学的研究 [PDF(5.6MB)]
• 第6章　生態環境の修復と農村の再生のためのオンファーム実証研究 [PDF(7.8MB)]
• 第7章　まとめ：サバンナ集水域の環境保全型総合農村開発に向けて [PDF(923KB)]
• (Paper) Issaka R.N., Ishida F., Kubota D. and Wakatsuki T., Geographical distribution of selected soil fertility parameters of inland valleys in West Africa. Geoderma, 75, 99-116, 1997. [PDF(1.3MB)]
• (Paper) Wakatsuki T., Rasydin A. and Naganawa T., Multiple regression method for estimating rates of weathering and soil formation in watershed, Soil Science and Plant Nutrition, 39: 153-159, 1993. [PDF(4.3MB)]
• (Paper) 若月 利之・三輪睿太郎, 縄文時代の人口密度分布と土壌の肥沃度. 筑波大学先史学・考古学研究調査報告, 4: 31-43, 1993. [PDF(7.7MB)]
• (Paper) Wakatsuki T. and Rasydin A., Rates of weathering soil formation. Geoderma, 52: 251-263, 1992. [PDF(653KB)]
• (Thesis) Oyediran G.O., Genesis, Classification and Potential Productivity Selected Wetland Soils in the Savanna Ecosystem of Nigeria. Obafemi Awolowo University, 1990, Ph.D. thesis. [PDF(6.8MB)]
• (Basic Documents of the Initial Stage of the Research 研究開始時の文献)
• (Paper)「水田は西アフリカを救えるか」JICA Expert誌1989年2月. [PDF(5.3MB)]
• (Paper) "Sawah for Sustainable Rice Farming in Inland Valley Swamps, IVSs, in West Africa" by Wakatsuki et al., 2nd WAFSRN, 1989. [PDF(4.1MB)]
• (Paper) Rice-based Cropping Systems in Inland Valleys. In "IITA Annual Report and Research Highlights 1987/88", pp.55-60, Ibadan, Nigeria, 1988. [PDF(4.8MB)]
• (Paper) IITA Annual Report, Resource and Crop Management Program, 1987. [PDF(4.4MB)]
• (Paper) IITA Annual Report, Resource and Crop Management Program, 1986. [PDF(4.0MB)]
• (Book) "The Wetlands and Rice in Sub Saharan Africa" edited by Juo A.S.R. and Lowe J.A., 1986. [PDF(10.9MB)]
• (Paper) 若月利之, 土と海と人と: 一つの土壌生成論の試み. 化学と生物, 23(6), 408-414, 1985. [PDF(897KB)]

• rice-Africa 1st and 2nd International Conference in 2011 and 2013
  In 2011: Proceedings [PDF(5MB)],
  In 2013: Proceedings [PDF(1.7MB)], Presentation 1 [PDF(4MB)], 2 [PDF(0.5MB)], 3 [PDF(4MB)]
• Africa Rice SMART program, Sawah, Market Access and Rice Technologies

• Chapter 1 Introduction [PDF(4.5MB)]
• Chapter 2 Various Traditional Rice Farming Systems in Sub-Saharan Africa [PDF(10.3MB)]
• Chapter 3 Sawah Hypthesis 1 and 2 [PDF(8.5MB)] 　　　
• Chapter 4 Site Selection and Sawah System Design [PDF(11.5MB)]
• Chapter 5 Sawah System Development [PDF(13.9MB)]
• Chapter 6 Sawah Based Rice Farming [PDF(10.8MB)]
• Chapter 7 Sawah Empowerment [PDF(18.5MB)]
• Chapter 8 Economic Analysis of Sawah Ecotechnology and Proposed Route for a Rice Revolution in Africa [PDF(536KB)]

◆特別推進研究　2007-2011 (MEXT assisted grant-in-aid Specially Promoted Research)

Grant Number：19002001
Title：水田エコテクノロジーによる西アフリカの緑の革命実現とアフリカ型里山集水域の創造
         (West African rice green revolution by Sawah ecotechnology and the creation of African Satoyama systems.)

• 特別推進研究「水田エコテクノロジーによる西アフリカの緑の革命実現とアフリカ型里山集水域の創造」成果の要約 2012
• 水田農業の普及によるアフリカの緑の革命実現 2009
• 西アフリカにおける農民の自力による水田開発による緑の革命実現を目指して 2008
• アフリカの緑の革命は水田（サワ、Sawah）により実現する 2007
• Materialization of African Rice Green Revolution by Sawah Ecotechnology: Concept Paper of New Sawah Project, 2007-2011 2009
• West African rice green revolution by Sawah ecotechnology and the creation of African Satoyama systems 2007
• Research Plan・ Progress in 2011
• Research Plan・ Progress in 2010
• Research Plan・ Progress in 2009
• Research Plan・ Progress in 2008
• Research Plan・ Progress in 2007

◆基盤研究(S) 2003-2007 (MEXT assisted grant-in-aid Basic Reserch S)

• 基盤研究S 2003-2007年度：西アフリカの食糧増産と土壌劣化防止 (2003-2005年度活動，2006年度活動)

• JICA/CRI Sawah project final report 2001: Integrated watershed management of inland vallys in Ghana and West Africa
• Content and Executive Summary of JICA/CRI Sawah project 1995-2001
• Chapter 1 Introduction
• Chapter 2 Conceptional Frame Work and Methodologies
• Chapter 3 Results and discussion-Soil and Water Team
• Chapter 4 Results and discussion-Crops Team
• Chapter 5 Results and discussion-Forests Team
• Chapter 6 Results and discussion-Life Team
• Chapter 7 Conclusion, Recommendation and Future Proposal
• Chapter 8 References

• Nigerian Project Site
• Ghanaian Project Site
• Other Project Site