Agro-ecological study to realize "Green Revolution" in the semiarid Tropics of Africa

2013 Fiscal Year Final Research Report

• Project/Area Number: 22405020
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Plant nutrition/Soil science
• Research Institution: Kyoto University
• Principal Investigator: SHINJO Hitoshi 京都大学, 地球環境学堂, 准教授 (70359826)
• Co-Investigator(Kenkyū-buntansha): TANAKA Ueru 総合地球環境学研究所, 研究部, 准教授 (10231408) ; IKAZAKI Kenta 首都大学東京, 都市環境科学研究科, 助教 (70582021)
• Co-Investigator(Renkei-kenkyūsha): TOBITA Satoshi 国際農林水産業研究センター, 生産環境領域, 主任研究員(当時) (30450266)
• Project Period (FY): 2010-04-01 – 2014-03-31
• Keywords: サヘル / 緑の革命 / 耕地生態系 / トウジンビエ / 耕地内休閑

Research Abstract

In semiarid area extending in the southern periphery of the Sahara Desert with the annual precipitation of about 400-800 mm, serious environmental degradation due to poverty known as desertification prevails. In this research, we evaluated soil management practices that can combat desertification from the viewpoint of not only productivity but sustainability based on nutrient budget. We found that chemical fertilizer application could increase the productivity as well as alleviate impact of drought. However, in the conventional practice that removes crop residues from a field for animal feed or building materials, a little fertilization may even accelerate nutrient mining of soils. Thus, even in the case of fertilization, crop residue management plays a key role in sustainability of soils.

Research Products

• [Journal Article] Rewetting of Dry Soil did not Stimulate the Carbon and Nitrogen Mineralization in Croplands with Plant Residue Removed in the Sahel, West Africa (2014)
  • Author(s): Sugihara, S., Funakawa, S., Ikazaki, K., Shinjo, H., and Kosaki, T.
  • Journal Title: Tropical Agriculture and Development Volume: 58 Pages: 8-17
• [Journal Article] サヘル地域の村落における「危機の年」の認識と対処行動-ニジェール南部のハウサおよびフルベの村落を事例に- (2013)
  • Author(s): 小村陽平、田中樹、佐々木夕子、真常仁志
  • Journal Title: システム農学 Volume: 29(2) Pages: 41-50
• [Journal Article] 西アフリカ・サヘル地域の村落において外部技術の導入経緯がその後の普及状況に与える影響 (2012)
  • Author(s): 佐々木 夕子,伊ヶ崎 健大,田中 樹,真常 仁志,飛田 哲
  • Journal Title: システム農学 Volume: 28(2) Pages: 73-83
• [Journal Article] Estimation of nitrogen flow within a village-farm model in Fakara region in Niger, Sahelian zone of West Africa (2012)
  • Author(s): Hayashi, K., Matsumoto, N., Hayashi, E.T., Abdoulaye, T., Shinjo, H., Tabo, R., Matsunaga, R., and Tobita, S.
  • Journal Title: Nutrient Cycling in Agroecosystem Volume: 92 Pages: 289-304
  • DOI: 10.1007/s10705-012-9490-4
• [Journal Article] Validation of soil organic carbon dynamics model in the semi-arid tropics in Niger, West Africa (2011)
  • Author(s): Nakamura, S., Hayashi, K., Omae, H., Ramadjita, T., Dougbedji, F., Shinjo, H., Saidou, A. K., and Tobita, S.
  • Journal Title: Nutrient Cycling in Agroecosystems Volume: 89 Pages: 375-385
  • DOI: 10.1007/s10705-010-9402-4
• [Journal Article] Aeolian materials sampler for measuring surface flux of soil nitrogen and carbon during wind erosion events in the Sahel, West Africa (2011)
  • Author(s): Ikazaki, K., Shinjo, H., Tanaka, U., Tobita, S., Funakawa, S., and Kosaki, T.
  • Journal Title: Transactions of the ASABE Volume: 54(3) Pages: 983-990
• [Journal Article] Field-scale aeolian sediment transport in the Sahel, West Africa (2011)
  • Author(s): Ikazaki, K., Shinjo, H., Tanaka, U., Tobita, S., Funakawa, S., and Kosaki, T.
  • Journal Title: Soil Science Society of America Journal Volume: 75 Pages: 1885-1897
  • DOI: 10.2136/sssaj2010.0416
• [Journal Article] "Fallow Band System," a land management practice for controlling desertification and improving crop production in the Sahel, West Africa. 1. Effectiveness in desertification control and soil fertility improvement (2011)
  • Author(s): Ikazaki, K., Shinjo, H., Tanaka, U., Tobita, S., Funakawa, S., and Kosaki, T.
  • Journal Title: Soil Science and Plant Nutrition Volume: 57(4) Pages: 573-586
• [Journal Article] 講座「サブサハラ・アフリカの土壌肥料研究最前線 1.講座のねらい、サブサハラ・アフリカの生態環境条件と農業の現状」 (2011)
  • Author(s): 真常 仁志,荒木 茂
  • Journal Title: 日本土壌肥料学雑誌 Volume: 82(4) Pages: 330-337
• [Journal Article] 西アフリカ・サヘル地域における農耕民および牧畜民の生業と暮らし-「危機の年」とその対処行動に注目して- (2011)
  • Author(s): 佐々木 夕子,田中 樹,伊ヶ崎 健大,真常 仁志,飛田 哲
  • Journal Title: システム農学 Volume: 27(4) Pages: 149-157
• [Presentation] Sustainable and efficient land management practices in the Sahel (2014)
  • Author(s): Shinjo, H., Ikazaki, K., Imanaka, S., Tanaka, U., Hayashi, K., Tobita, S. and Kosaki, T.
  • Place of Presentation: Jeju Korea (Poster Presentation)
  • Year and Date: 20140608-13
• [Presentation] 西アフリカ・サヘル地域において土性がトウジンビエ生育に与える影響 (2014)
  • Author(s): 田口高介・真常仁志・伊ヶ崎健大
  • Organizer: 2014年日本ペドロジー学会
  • Place of Presentation: 島根大学
  • Year and Date: 2014-03-21
• [Presentation] A technique practical and affordable for local people to improve crop performance with erosion control in the Sahel, West Africa (2013)
  • Author(s): Ueru TANAKA, K.IKAZAKI, Y.SASAKI, H.SHINJO and S.TOBITA
  • Organizer: Conference on Desertification and Land Degradation
  • Place of Presentation: University of Ghent, Belgium
  • Year and Date: 20130717-18
• [Presentation] Lessons learnt from the extension of practical technique to control wind erosion with improvement of crop performance in Niger, West Africa (2013)
  • Author(s): Yuko SASAKI, Ueru TANAKA, Kenta IKAZAKI, Hitoshi SHINJO, Satoshi TOBITA
  • Organizer: Conference on Desertification and Land Degradation
  • Place of Presentation: University of Ghent, Belgium
  • Year and Date: 20130717-18
• [Presentation] Co-design of practical technique using local materials and knowledge to control water erosion with improvement of household income in Niger, West Africa (2013)
  • Author(s): T.Shimizu, U.Tanaka, Y.Sasaki, K.Ikazaki, H.Shinjo and H.Nakamura
  • Organizer: Conference on Desertification and Land Degradation
  • Place of Presentation: University of Ghent, Belgium
  • Year and Date: 20130717-18
• [Presentation] "Fallow Band System", a do-nothing practice for controlling wind erosion and improving soil fertility in the Sahel, West Africa (2013)
  • Author(s): Ikazaki, K., Shinjo, H., Tanaka, U., Tobita, S., Funakawa, S., Kosaki, T.
  • Organizer: Conference on Desertification and Land Degradation
  • Place of Presentation: University of Ghent, Belgium
  • Year and Date: 20130617-18
• [Presentation] In situ short-term dynamics of CO2 flux and microbial biomass after simulated rainfall in dry croplands under the different climate and soil texture (2013)
  • Author(s): Sugihara, S, Funakawa, S., Shinjo, H., Kadono, A., Takata, Y., Sawada, K., Ikazaki, K., Fujii, K., & Kosaki, T.
  • Organizer: IUSS Global Soil Carbon Workshop
  • Place of Presentation: Wisconsin, USA.
  • Year and Date: 20130603-06
• [Presentation] Practical technique and extension method for improvement of crop performance with wind erosion control (2013)
  • Author(s): Ueru Tanaka, K.Ikazaki, Y.Sasaki, H.Shinjo, S.Tobita
  • Organizer: UNCCD 2nd Scientific Conference
  • Place of Presentation: Bonn (Germany)
  • Year and Date: 20130409-12
• [Presentation] 西アフリカ・サヘル地域において砂漠化が土壌水分動態に与える影響 (2013)
  • Author(s): 伊ヶ崎健大・真常仁志・田中 樹・石川裕彦・舟川晋也・小﨑 隆
  • Organizer: 日本ペドロジー学会2013年度大会
  • Place of Presentation: 東北大学(仙台)
  • Year and Date: 2013-10-25
• [Presentation] Effects of wind erosion on water balance in a crop field in the Sahel, West Africa (2012)
  • Author(s): Kenta Ikazaki, Hitoshi Shinjo, Ueru Tanaka, Hirohiko Ishikawa, Shinya Funakawa, Takashi Kosaki
  • Organizer: SSSA
  • Place of Presentation: Cincinnati
  • Year and Date: 20121021-24
• [Presentation] 西アフリカ・サヘル地域において地表面の状態が水収支および窒素の溶脱に与える影響 (2012)
  • Author(s): 伊ヶ崎健大、真常仁志、田中 樹、石川裕彦、舟川晋也、小崎 隆
  • Organizer: 日本土壌肥料学会
  • Place of Presentation: 鳥取
  • Year and Date: 20120000
• [Presentation] 実践性の高い砂漠化対処技術や普及法の開発と実証-地域の特徴や人々の暮らしとの親和性を与える技術設計を意識して- (2012)
  • Author(s): 田中樹,佐々木夕子,清水貴夫,伊ヶ崎健大,真常仁
  • Organizer: 日本国際地域開発学会2012年度秋季大会
  • Place of Presentation: 新潟大学
  • Year and Date: 2012-12-08
• [Presentation] サヘル地域での砂漠化対処に関する技術論の課題と展望 (2012)
  • Author(s): 田中樹、佐々木夕子、清水貴夫、伊ヶ崎健大、真常仁志、中村洋、瀬戸進一
  • Organizer: 国際開発学会 ポストイベント : 西アフリカ内陸半乾燥地での砂漠化対処と生計向上支援のあり方を探る
  • Place of Presentation: 横浜市(JICA横浜)
  • Year and Date: 2012-06-03
• [Presentation] サヘル地域における砂漠化対処のスケールと技術論 (2012)
  • Author(s): 田中樹、伊ヶ崎健大、真常仁志、佐々木夕子、小村陽平
  • Organizer: 国際開発学会第13回春季大会、セッション11 : <企画>砂漠化対処への実践技術と普及手法
  • Place of Presentation: 横浜市(横浜国立大学)
  • Year and Date: 2012-06-02
• [Presentation] サヘル地域村落の社会ネットワークと導入技術の普及アプローチ (2012)
  • Author(s): 佐々木夕子 、田中樹、伊ヶ崎健大、真常仁志、小村陽平
  • Organizer: 国際開発学会第13回春季大会、セッション11 : <企画>砂漠化対処への実践技術と普及手法
  • Place of Presentation: 横浜市(横浜国立大学)
  • Year and Date: 2012-06-02
• [Presentation] 在来技術の活用と生計向上を意識した水食抑制への取り組み (2012)
  • Author(s): 中村洋、 清水貴夫、瀬戸進一、 田中樹、真常仁志
  • Organizer: 国際開発学会第13回春季大会、セッション11 : <企画>砂漠化対処への実践技術と普及手法
  • Place of Presentation: 横浜市(横浜国立大学)
  • Year and Date: 2012-06-02
• [Presentation] ニジェール共和国における風食抑制技術の普及の成果と課題 (2012)
  • Author(s): 瀬戸 進一、田中 樹、伊ヶ崎 健大、真常仁志、中村 洋
  • Organizer: 国際開発学会第13回春季大会、セッション11 : <企画>砂漠化対処への実践技術と普及手法
  • Place of Presentation: 横浜市(横浜国立大学)
  • Year and Date: 2012-06-02
• [Presentation] 西アフリカ・サヘル地域における風食抑制と増収を目指す新たな砂漠化対処技術の開発(第三報)‐増収効果の実証‐ (2011)
  • Author(s): 伊ヶ崎 健大・真常仁志・田中 樹・飛田 哲・舟川晋也・小崎 隆
  • Organizer: 日本熱帯農業学会第109回講演会
  • Place of Presentation: 明治大学農学部(川崎市)
  • Year and Date: 20110328-29
• [Presentation] 西アフリカ・サヘル地域の村落における技術導入の経緯と普及との関係 (2011)
  • Author(s): 佐々木夕子・田中 樹・伊ヶ崎健大・真常仁志・飛田 哲・舟川晋也
  • Organizer: 日本熱帯農業学会第109回講演会
  • Place of Presentation: 明治大学農学部(川崎市)
  • Year and Date: 20110328-29