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SUZUKI Shinji Professor |
From Graduate School 【 display / non-display 】
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Hokkaido University Graduate School, Division of Agriculture Doctor Course Completed
1998.04 - 2002.06
Country：Japan
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Hokkaido University Graduate School, Division of Agriculture Master Course Completed
1996.04 - 1998.03
Country：Japan
Studying abroad experiences 【 display / non-display 】
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2012.09 - 2013.08 Cranfield University
Employment Record in Research 【 display / non-display 】
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Tokyo University of Agriculture Faculty of Regional Environment Science Department of Bioproduction and Environment Engineering Lecturer
2007.04 - 2011.03
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Tokyo University of Agriculture Faculty of Regional Environment Science Department of Bioproduction and Environment Engineering Associate Professor
2011.04 - 2017.03
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Tokyo University of Agriculture Faculty of Regional Environment Science Department of Bioproduction and Environment Engineering Professor
2017.04
Papers 【 display / non-display 】
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Impact of Soil Amendments and Alternate Wetting and Drying Irrigation on Growth, Physiology, and Yield of Deeper-Rooted Rice Cultivar Under Internet of Things-Based Soil Moisture Monitoring. Reviewed International coauthorship International journal
Amin, M. W., Sediqui, N., Azizi, A. H., Joya, K., Amin, M. S., Mahmoodzada, A. B., ... & Mihara, M.
AgriEngineering 7 ( 3 ) 69 - 93 2025.06
Language：English Publishing type：Research paper (scientific journal)
Effective water and soil management is crucial for crop productivity, particularly in rice cultivation, where poor soil quality and water scarcity pose challenges. The response of deeper-rooted rice grown in soils amended with different soil amendments (SAs) to Internet of Things (IoT)-managed alternate wetting and drying (AWD) irrigations remains undetermined. This study explores the effects of various SAs on DRO-1 IR64 rice plants under IoT-based soil moisture monitoring of AWD irrigation. A greenhouse experiment executed at the Tokyo University of Agriculture assessed two water management regimes—continuous flooding (CF) and AWD—alongside six types of SAs: vermicompost and peat moss (S + VC + PM), spirulina powder (S + SPP), gypsum (S + GS), rice husk biochar (S + RHB), zeolite (S + ZL), and soil without amendment (S + WA). Soil water content was continuously monitored at 10 cm depth using TEROS 10 probes, with data logged via a ZL6 device and managed through the ZENTRA Cloud application (METER GROUP Company). Under AWD conditions, VC + PM showed the greatest decline in volumetric water content due to enhanced root development and water uptake. In contrast, SPP and ZL maintained consistent water levels. Organic amendments like VC + PM improved soil properties and grain yield, while AWD with ZL and GS optimized water use. Strong associations exist between root traits, biomass, and grain yield. These findings highlight the benefits of integrating SAs for improved productivity in drought-prone rice systems.
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Water resources survey and model analysis in Dikhill area, Djibouti Reviewed International coauthorship
SUZUKI R., SUZUKI S., SAITO S., ADEN D., MALOW Fadoumo A.
Journal of Arid Land Studies 34 ( 3 ) 105 - 110 2024.12
Language：English Publishing type：Research paper (scientific journal) Publisher：The Japanese Association for Arid Land Studies
<p>The republic of Djibouti is a dry country with an annual maximum temperature and rainfall being 40 degrees Celsius and less than 150 mm, respectively. Geographical coordinates, groundwater depth, and condition of water use were evaluated at 17 sites within a small catchment in Dikhil. Half of the sites were established after the 1990s and unlisted in the database summarized by the government of Djibouti. The other half sites are listed but all of them had an error of geographical coordinates. Groundwater depth was analyzed using a simulation model (GETFLOWS) for the purpose of evaluating the potential of water resources, and the simulated water levels were in proportion to the observed water levels with the root mean square error (RMSE) being 9.4 m.</p>
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Improving Irrigation Water Use Efficiency and Maximizing Vegetable Yields with Drip Irrigation and Poly-Mulching: A Climate-Smart Approach. Reviewed International coauthorship
Bwire, D., Watanabe, F., Suzuki, S., & Suzuki, K.
Water 16 ( 23 ) 3458 - 3473 2024.12
Language：English Publishing type：Research paper (scientific journal)
Water management is a significant aspect of sustainable vegetable farming, especially in water-scarce regions. This, in addition to weed infestations, limits vegetable yields, which negatively affect food security in developing regions, particularly East Africa, where livelihoods chiefly depend on rain-fed agriculture. Vegetable farming, especially tomato cultivation, requires more water. By promoting mulching, a soil water conservation tool, we can control surface evaporation (E), which, together with irrigation, enhances effective water use and vegetable yields. The experiments for this study were conducted at the Tokyo University of Agriculture, Japan, to evaluate the influences of different irrigation conditions and poly-mulching on weed control, tomato yields, and water use efficiency. The study was conducted from May to September 2018 on a 30 m2 plot in an open-ended greenhouse using drip irrigation for tomato cultivation. Three predetermined irrigation conditions of 4, 3, and 2 mm/day were applied on black poly-mulched and bare ridges. Data on soil conditions—soil temperature, as well as meteorological variables, including solar radiation and temperature—were measured using thermocouple sensors and micro-hobo weather stations, respectively, during the tomato cultivation, while yield components—growth, yield, water productivity, and sugar content—were determined after harvest. The results of a two-way ANOVA show that irrigation conditions with poly-mulching reduced the weed biomass significantly, and improved yields and water use efficiency compared to the irrigation conditions on bare ridges. The application of 4, 3, and 2 mm/day irrigation with poly-mulching significantly reduced the weed biomass by 5% compared to the same irrigation conditions on bare ridges. Similarly, 4 and 3 mm/day irrigation conditions with poly-mulching significantly increased the tomato yield by 5% compared to 2 mm/day on bare ridges. The bigger roots were concentrated and widely distributed at the shallow soil depth (0–20 cm) of the ridges with high irrigation amounts, while the small and thin roots were in deeper soil layers (30–45 cm). This study provides scientific knowledge on the application of predetermined irrigation conditions that can be (i) integrated into irrigation scheduling and (ii) adopted for regions facing water scarcity and limited or no in situ meteorological data, to improve water use efficiency for vegetable cultivation.
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Estimating irrigation water amounts for tomato cultivation using observed meteorological data in Djibouti
WATANABE Fumio, SUZUKI Shinji, MOHAMED Tabarek Ismael, JITSUNO Masataka, OHSHIMA Hiroyuki, SANADA Atsushi, SHINOHARA Takashi, ABDALLAH Abdillahi Houssein
Journal of Arid Land Studies 32 ( S ) 95 - 99 2022.12
Language：English Publisher：The Japanese Association for Arid Land Studies
<p>Irrigation is essential for crop cultivation in arid and semi-arid areas with limited rainfall and water resources. Efficient and effective use of water resources is required and saving irrigation water is important. Djibouti is a very dry region with annual rainfall of about 150 mm and an average annual temperature of 28.6°C. Due to such meteorological conditions, water resources depend mostly on groundwater, and this makes water extremely scarce. Therefore, water saving in agricultural sector is indispensable. This study aims at promoting effective and efficient use of irrigation water in Djibouti. The appropriate irrigation water amounts for tomato cultivation were estimated using CROPWAT provided by FAO and observed meteorological data at Ali Farren farm in Djibouti. The conditions required for calculating the amounts of irrigation water were medium loam soil based on the laboratory results of soil particle size test, and the tomato cultivation period from October to March according to the local farmers. The result showed that the average monthly reference evapotranspiration was 5.7 mm/day annually. Reference Evapotranspiration was maximum in July and August with 8.4 mm/day and minimum in December with 4.6 mm/day. The amount of irrigation water from October to March was about 476 mm which corresponds to the local tomato cultivation period.</p>
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Preliminary study on improvement of soil water retention characteristics by <i>Spirulina</i>.
SUZUKI Shinji, WATANABE Satoru, OMAR Abdillahi Ismail, WATANABE Fumio, SHIMADA Sawahiko
Journal of Arid Land Studies 32 ( S ) 49 - 52 2022.12
Language：English Publisher：The Japanese Association for Arid Land Studies
<p>One of the measures to enhance the water use efficiency or to prevent desertification in arid and semi-arid countries is to improve water holding capacity (water retention) of soils. This study focused on<i> Spirulina</i>, a planktonic blue-green unicellular microalgae classified as cyanobacteria. Since the <i>Spirulina</i> inhabits strongly alkaline water body which is generally seen in the tropics, the <i>Spirulina</i> is expected as a locally available soil amendments. Further, the <i>Spirulina</i> secretes Extracellular Polymeric Substances (EPS). The current study assessed the effect of the <i>Spirulina</i> and the EPS powders to improve the soil water holding capacity. Slight addition (0.5 to 5%) of the <i>Spirulina</i> and EPS powders to sandy soils resulted in a significant increase of the readily available water content for crop growth (RAWCC). The effect of the <i>Spirulina</i> on the RAWCC of the sandy soils was similar of that of the bentonite. Meanwhile, soils with textures of Silty Loam and Sandy Loam had little increases in the RAWCCs with those amendments. In addition, the RAWCCs of the soils treated with both <i>Spirulina</i> and EPS powders did not decrease significantly after heat treatment indicating the persistence of the effect. The results of the current study demonstrated the efficiency and its persistence of the <i>Spirulina</i> and the <i>Spirulina</i>-derived EPS to improve soil water holding capacity particularly in sandy soils.</p>
Books and Other Publications 【 display / non-display 】
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はかる つくる えがく・そだてる 緑の地域を育む～地域環境科学がわかる本
東京農業大学地域環境科学部教員一同（ Role： Joint author , 気象の極端現象で土壌環境は変化するか？土壌の長期連続観測に挑戦（p. 35））
東京農業大学出版会 2015.07 （ ISBN:978-4-88694-450-4 ）
Language：Japanese Book type：General book, introductory book for general audience
気候変動が農地の土壌環境に及ぼす影響についての研究を紹介した。
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新版 地域環境科学概論
東京農業大学地域環境科学部編（ Role： Joint author , 3.7気象 (p. 151-154) ）
理工図書 2014.04 （ ISBN:978-4-8446-0825-7 ）
Language：Japanese Book type：Textbook, survey, introduction
地域環境科学部において気象を学ぶ意義について論じた．
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食と農と資源－環境時代のエコ・テクノロジー
中村好男，三原真智人，駒村正治，中村貴彦，藤川智紀，豊田裕道，島田沢彦，高橋悟，渡邉文雄，鈴木伸治，牧恒夫，小梁川雅，竹内康，岡澤宏，坂口栄一郎，川上昭太郎，田島淳，佐々木豊（ Role： Joint author , 第II部，第5章 エチオピア中央部の気象および土壌の特性と問題点 (p. 118-129)）
共立出版 2010.10
Language：Japanese Book type：Scholarly book
エチオピア国中央部の気象，土壌の実測例をもとに，現地での乾燥ポテンシャルの高さについて論じた。
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沙漠の事典
日本沙漠学会編（ Role： Joint author , 第15章沙漠の土：保水性・透水性 (p. 208-209)，付録-1：日本沙漠学会20年の歩み(年表) (p. 230-232)，付録-2：日本の沙漠研究機関 (p. 233)，付録-3：世界の沙漠研究機関 (p. 234-235)）
丸善 2009.07 （ ISBN:9784621081396 ）
Language：Japanese
乾燥地の土壌の保水性および透水性について，実際のデータを用いて説明した。
Misc 【 display / non-display 】
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エチオピア中央部における土壌劣化（沙漠化）のメカニズム
鈴木伸治
国際農林業協力 38 ( 1 ) 13 - 20 2015.05
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：国際農林業協働協会
エチオピア中央部の土壌劣化について森林面積の激減，土壌や気象，立地条件（標高）などの面から論じた。
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調査地の概要，農業のための水利用技術とその活用，資料
鈴木伸治
東京農業大学沙漠に緑を育てる会20周年記念誌～東アフリカにおける活動記録～ 2015.03
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (other) Publisher：東京農業大学沙漠に緑を育てる会設立20周年記念事業実行委員会・東京農業大学総合研究会沙漠緑化研究部会
東京農業大学沙漠に緑を育てる会のこれまでの研究成果をまとめた。
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Coupled water and heat balance method for estimating the amount of snowmelt infiltration to frozen ground.
78 ( 4 ) 380 - 385 2011.10
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
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途上国における有用技術及び大学との連携可能性検討調査 最終報告書
高橋悟，豊田裕道，渡邉文雄，関山哲雄，島田沢彦，鈴木伸治，真田篤史，穂坂賢，篠原卓，高橋新平，本間和宏，渡辺智
受託研究報告書 2010.01
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：国際協力機構
エチオピア国での有用技術の実証調査の最終報告書。
A4判，pp. 159. -
平成20年度 途上国における有用技術及び大学との連携可能性検討調査 報告書
高橋悟，豊田裕道，渡邉文雄，鈴木伸治，真田篤史，穂坂賢，高橋新平，本間和宏
受託研究報告書 2009.03
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (other) Publisher：国際協力機構
2年度目におけるエチオピア国での有用技術の実証調査をまとめた。
A4判，pp.39.
Industrial Property Rights 【 display / non-display 】
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作物の生育方法
廣田知良，岩田幸良，鈴木伸治
Application no：特願2006-063471 Date applied：2006.03
Patent/Registration no：特許第4843338号 Date registered：2011.10 Date issued：2011.10
Country of applicant：Domestic Country of acquisition：Domestic
除雪を行って土壌凍結深を制御し，作物の生育に適切な環境を作り出す。
Honours, Awards and Prizes 【 display / non-display 】
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農業農村工学会第63回関東支部大会奨励賞
2013.10 農業農村工学会関東支部
三井ともみ，鈴木伸治，伊藤博武，高橋悟
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
Scientific Research Funds Acquisition Results 【 display / non-display 】
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降雨パターンの変動が農地土壌に及ぼす影響の解明とリスク軽減技術の開発
2017.04 - 2020.03
科学研究費補助金 基盤研究(C)
鈴木伸治
Authorship：Principal investigator
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Clarification of a role of unfrozen water on water movement of freezing and thawing of soils in agricultural area of cold region under climate change.
2008.04 - 2011.03
Grant-in-Aid for Scientific Research Young Person Research (B)
Authorship：Principal investigator
Presentations 【 display / non-display 】
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Verification of water resources database and Study on water cycle in Djibouti. International conference
Suzuki, R., Suzuki,S., Fumio Watanabe, F. and Shimada, S.
2021.05
Event date： 2021.05
Language：Japanese Presentation type：Poster presentation
Venue：The Japanese Association for Arid Land Research
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Improvement of spatio-temporal resolution for risk assessment of surface runoff on bare agricultural land International conference
Kubota, Y., Suzuki, S., Watanabe, F., and Itoh, H
2020.08 The Japanese Society of Irrigation, Drainage and Rural Engineering
Event date： 2020.08
Language：Japanese Presentation type：Poster presentation
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Preliminary study on improvement of soil water holding capacity by Spirulina.
Suzuki, S., Yamamoto, M., Suzuki, J., Watanabe, S. and Watanabe, F.
2020.05 The Japanese Association for Arid Land Studies
Event date： 2020.05
Language：Japanese Presentation type：Oral presentation (general)
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Comparison of scheduled irrigation water amount with calculated amount from CROPWAT in low-pressure drip irrigation system for tomato cultivation in Uganda International conference
Enou, E., Watanabe, F., Suzuki, S., and Kobayashi, Y.
THE 2020 ANNUAL MEETING THE JAPANESE ASSOCIATION FOR ARID LAND STUDIES 2020.05 The Japanese Association for Arid Land Studies
Event date： 2020.05
Language：Japanese Presentation type：Poster presentation
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Characteristics of ground rainfall in Eastern Uganda International conference
Kobayashi, Y., Watanabe, F., Suzuki, S., Emmanuel, O., and Kanyike, T.
2020.05 The Japanese Association for Arid Land Studies
Event date： 2020.05
Language：Japanese Presentation type：Oral presentation (general)
Attractiveness of Research 【 display / non-display 】
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国語，算数，理科，社会，英語は受験のためだけにあるのではありません。大学の研究ではそのすべてが必要とされ，大いに生かされます。
基礎をしっかりと身につけることにより，地球環境で起こっている難しい問題にも，独創性のある方法で対処することができます。