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Laboratory Address |
東京都世田谷区桜丘1-1-1 |
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Laboratory Fax number |
03-5477-2946 |
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INUBUSHI Kazuyuki Professor |
From School 【 display / non-display 】
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The University of Tokyo Graduated
- 1984.03
Employment Record in Research 【 display / non-display 】
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Tokyo University of Agriculture Faculty of Applied Bio-Science Department of Agricultural Chemistry Professor
2022.04
External Career 【 display / non-display 】
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Tokyo University of Agriculture Faculty of Applied Bio-Science Professor
2022.04
Country：Japan
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Chiba University Professor Emeritus Grand Fellow
2021.04
Country：Japan
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Chiba University Graduate School of Horticulture Specially Appointed Researcher
2021.04 - 2022.03
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International Union of Soil Science (IUSS) HONORARY MEMBER
2020.11
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Science Council of Japan Associate Member
2018.10
Country：Japan
Professional Memberships 【 display / non-display 】
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International Union of Soil Science
1985.04
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日本土壌微生物学会
1980.04
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日本土壌肥料学会
1978.04
Research Areas 【 display / non-display 】
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Life Science / Plant nutrition, soil science / Soil Microbiology Soil Biochemistry
Research Interests 【 display / non-display 】
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Soil Microbiology, Soil Biochemistry, Microbial Ecology
Papers 【 display / non-display 】
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Effect of biodegradable plastics on greenhouse gas emission and paddy rice growth under flooding conditions Reviewed International journal
Kazuyuki Inubushi, Iori Sahara, Taku Kato, Hiroyuki Oshima
Biology and Fertility of Soils 2024.07
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC
Biodegradable plastics applied to soil stimulate the production of greenhouse gases and inhibit plant growth under aerobic conditions. This study aimed to examine the effects of biodegradable plastics on paddy rice growth and greenhouse gas emission under flooding conditions in pot experiments and also on greenhouse gas production under flooding conditions in an incubation experiment. Two series of pot experiments were conducted with rice (Oryza sativa). First series as immediate flooded and 2nd series as 2 weeks nonflooding before flooded, and both kept flooded until harvest. The following four kinds of materials were added to the sandy paddy soil, 1) nonwoven fabric sheets made of polylactic acid and polybutylene-succinate, 2) laminate sheets made of polybutylene adipate terephthalate and pulp, 3) cellulose filter paper, and 4) rice straw. Only soil was used as control. Methane (CH4) emission, measured by chamber method followed by gas chromatography, was significantly larger only in the cellulose treatment than the laminate treatment in the immediate flooded series, indicating that biodegradable plastics had no significant impact on CH4 emission from paddy rice soil. Rice growth and yield did not show significant difference among treatments in both series. Incubation experiment showed the largest CH4 production in cellulose-amended soil, followed by straw-amended and laminate amended soils, and least in fabric-amended soil, while CO2 did not show significant differences among treatments. We need further examination with different biodegradable plastics for a longer period that test used in this study.
DOI： 10.1007/s00374-024-01838-5
Other Link： https://link.springer.com/article/10.1007/s00374-024-01838-5/fulltext.html
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Inhibitory Effects of Dicyandiamide and Neem (Azadirachta indica) on N Dynamics and Greenhouse Gas Emissions in Paddy Saline-Sodic Soils: A Laboratory Study Reviewed International coauthorship International journal
Peangdin Chaiyapo, Suphicha Tanachit, Miwa Matsushima Yashima, Kazuyuki Inubushi, Somchai Anusontpornperm, Irb Kheoruenromne
Applied and Environmental Soil Science 14 ( 2 ) 168 2025.08
Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley
Application of nitrifcation inhibitors (NIs) with nitrogen (N) fertilizer is an efcient way to increase soil N availability with minimum greenhouse gas (GHG) emissions from diferent soil types; however, there is scarce information for salt-afected soils.
Tisstudy explored the efect of two NIs—dicyandiamide (DCD) and neem leaf powder—applied with urea on the soil N content and the emissions of nitrous (N2O) oxide, methane (CH4), and carbon dioxide (CO2) using aerobic and anaerobic conditions in a 56-day incubation experiment with three diferent levels of salinity and sodicity in saline-sodic soils. Urea combined with both NIs hadaslight impact on delaying nitrifcation and signifcantly decreased the nitrate (NO3−-N) content compared to urea alone, while the release of all GHG was successfully suppressed except CO2. Te levels of all GHG emissions were the greatest with anaerobic conditions and peaked when the soils were submerged for 14days, while the inhibition of GHG emissions due to these NIs with anaerobic conditions was less efective than for aerobic conditions. Based on a paired comparison between NIs, both NIs equally reduced CH4 emission; however, neem leaf powder reduced signifcantly more N2O than DCD. Te fndings from this study indicated that, to some extent, both NIs could be used to increase the efciency of N fertilizer in these salt-afected soils; however, there were no determinable impacts of these NIs on GHG emissions from soil with the highest levels of salinity and sodicity, refecting that their inhibitory efects were wholly retarded at such levels.DOI： doi.org/10.1155/aess/1321867
Other Link： https://ejss.fesss.org/10.18393/ejss.1647314
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Effects of biochar amendment at various soil depths on maize roots and growth indices Reviewed International coauthorship International journal
S. Gaurav, B. Diptanu, Chandra M. Mehta, K. Prasann, E. Nishihara, K. Inubushi, S. Sudo, S. Hayashida, P. K. Patra, Tatiana Minkina, Vishnu D. Rajpu
Scientific Reports 15 ( 26310 ) 168 2025.07
Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley
Biochar application in the soil has shown its potential for improved plant growth, root structure, and nutrient availability. However, uncertainties remain regarding the optimal depth for biochar application and its interaction with roots, which significantly influence plant growth and development.
This transparent rhizobox trial consists of five treatments: control treatment (T1) with recommended
dose of fertilizer, and four biochar addition treatments with different depths viz. 5 (T2), 10 (T3), 15
(T4) and 20 cm (T5). FESEM, EDX-Spectroscopy was performed to elucidate the change in morphology
and element distribution pattern of biochar after application in soil. Fresh biochar has 53.7% carbon
and 19.9% oxygen, however, aged biochar shown 37.4% carbon and 36.4% oxygen content. The T5 exhibit the best outcomes, with the most significant increment in maize root traits over the control treatment (T1). In particular, T5 recorded a maximum improvement in root length (+ 48.2%), root volume (+ 42.7%) and root dry biomass (+ 56.7%) compared to the control treatment when biochar was
applied at 20 cm soil depth. Shoot traits at 20 cm biochar incorporation revealed an increase in shoot
fresh biomass (+ 23.1%), shoot dry biomass (+ 15%), leaf area (+ 50.5%) and number of leaves (+ 40.7%)
as compared to the control treatment. As compared to the control, a considerable rise in soil nitrogen,
phosphorus, and potassium was observed in biochar amendment at 20 cm depth, with the highest nitrogen in T5 (20.9%), phosphorus in T5 (103%), and the percentage increase in potassium in T5 (55.5%). One of the most consistently prevalent molecules examined by GC–MS was methyl stearate, a fatty acid ester detected in all five treatments. Methyl stearate content increased as the depth of
biochar increased: T1 (10.26%), T2 (8.67%), T3 (12.40%), T4 (12.93%), and T5 (14.65%). Overall, the findings of this study suggest that uniform application of biochar in the top soil layer significantly enhances the above- and below-ground attributes of plants.DOI： 10.1038/s41598-025-09218-1
Other Link： https://ejss.fesss.org/10.18393/ejss.1647314
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Report from International Union of Soil Sciences Inter-Congress Meeting
Maeda Morihiro, Inubushi Kazuyuki, Shinano Takuro, Hayakawa Chie
Japanese Journal of Soil Science and Plant Nutrition 96 ( 3 ) 339 - 339 2025.06
Language：Japanese Publisher：Japanese Society of Soil Science and Plant Nutrition
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Impact of fresh and residual biochar on physiological attributes and grain quality of wheat (Triticum aestivum L.) Reviewed International coauthorship International journal
Gaurav Sharma, Diptanu Banik, Chandra Mohan Mehta, Eiji Nishihara, Kazuyuki Inubushi, Shigeto Sudo, Sachiko Hayashida, Prabir K. Patra
Journal of Applied Biology & Biotechnology 14 ( 2 ) 168 2025.06
Language：English Publishing type：Research paper (scientific journal) Publisher：Open Science Publishers LLP
This study aimed to investigate the effect of fresh and residual biochar on the physiological attributes and quality of wheat grain. The research trial was conducted in the field applied with fresh biochar (S1), one-season-old residual biochar (S2), and two-season-old residual biochar (S3). The treatments include T1 (absolute control), T2 (100% RDF), T3 (100% NP), T4 (NP + rice husk biochar 5 t/ha), T5 (NP + rice husk biochar 10 t/ha), T6 (NP + rice husk biochar 15 t/ha), T7 (NP + rice straw biochar 5 t/ha), T8 (NP + rice straw biochar 10 t/ha), and T9 (NP + rice straw biochar 15 t/ha). A significant impact of fresh biochar application (S1) over one-season-old biochar (S2) and two-season-old biochar (S3) was recorded. In S1, the application of biochar at a rate of 5 t/ha (T4 and T7) showed enhanced chlorophyll index (+17.3%), relative water content (RWC) (+9.6%), membrane injury index (MII) (+8.1%) along with the carbohydrate (+12.7%), and protein content (+49.9%) in wheat grains. In one-season-old biochar (S2), as compared to the control, a notable improvement in the chlorophyll index (+13.8%), MII (+7.2%), membrane stability index (+27.1%), carbohydrate (+5.9%), and protein content (+32.3%) of wheat grains in treatment no. T5 & T8 (i.e. 10 t/ha). While in two-season-old biochar (S3), the treatment no. T6 & T9 (i.e., 15 tons/ha) had a significant impact on chlorophyll index (+7.2%), RWC (+4%), MII (+3.6%), membrane stability index (+12.5%), as well as the carbohydrate (+2.7%) and protein content (+10.2%) of wheat grains.
Other Link： https://ejss.fesss.org/10.18393/ejss.1647314
Books and Other Publications 【 display / non-display 】
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Role of Science and Technology for Sustainable Future
Sharma, S, Inubushi, K, Mukherjee, S（ Role： Contributor , Roles of Agricultural Sciences for Achieving Sustainable Development in India: Perspectives and Challenges.）
Springer, Singapore 2024.07 （ ISBN:9789819707102 ）
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波多野 隆介 , Shinjo Hitoshi, Takata Yusuke, Kosaki Takashi, Inubushi Kazuyuki, Sakurai Katsutoshi
Springer 2022 （ ISBN:9789811582318 ）
Language：English
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Nitrogen in Agriculture – Physiology, Agricultural and Ecological Aspects
Kazuyuki Inubushi, Miwa Yashima（ Role： Joint editor , Mitigation of Climate Change by Nitrogen Managements in Agriculture）
IntechOpen 2021.10
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Mitigation of Climate Change by Nitrogen Managements in Agriculture
Kazuyuki Inubushi, Miwa Yashima（ Role： Joint author）
IntechOpen 2021.07
Misc 【 display / non-display 】
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溶存有機物を用いた新鮮火山灰試 料へのC吸着に対する非晶質・準晶 質Alと酸化Fe含量の影響
加藤拓, 小山侑里子, 眞野優香, 斎藤温子, 大島宏行, 犬伏和之
日本土壌肥料学会福岡大会講演要旨 70 81 - 81 2024.09
Authorship：Last author Language：Japanese Publishing type：Research paper, summary (national, other academic conference)
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カルシウムの施用がホウ酸によるホウ素の加給性に与える影響
石居誠心, 大島宏行, 犬伏和之, 加藤拓
日本土壌肥料学会福岡大会講演要旨 70 128 - 128 2024.09
Language：Japanese Publishing type：Research paper, summary (national, other academic conference)
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草地管理方法の違いが阿蘇外輪山東部の地下部バイオマスおよび土壌炭素蓄積量に与える影響
斎藤温子, 坂上翼, 山口滉太, 町田玲子, 下鴨聖, 茂木もも子, 山田晋, 今井伸夫, 犬伏和之, 大島宏行, 加藤拓
日本土壌肥料学会福岡大会講演要旨 70 83 - 83 2024.09
Language：Japanese Publishing type：Research paper, summary (national, other academic conference)
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生分解性プラスチックマルチ資材 が土壌の諸性質と植物および温室 効果ガス生成に及ぼす影響
犬伏和之, 里見吏貴, 逢坂明星, 佐原伊織, 加藤拓, 大島宏行, 八島末和
日本土壌肥料学会福岡大会講演要旨 70 153 - 153 2024.09
Authorship：Lead author Language：Japanese Publishing type：Research paper, summary (national, other academic conference)
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乾燥汚泥とバイオ炭の混合ペレッ ト化がリン酸肥効と温室効果ガス 放出に及ぼす影響
佐原伊織, 宮川桜, 加藤拓, 犬伏和之, 大島宏行
日本土壌肥料学会福岡大会講演要旨 70 120 - 120 2024.09
Language：Japanese Publishing type：Research paper, summary (national, other academic conference)
Industrial Property Rights 【 display / non-display 】
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稲用含鉄資材、稲用含鉄資材の製造方法及び稲用含鉄資材の施用方法
伊藤公夫, 井本健夫, 白鳥豊, 犬伏和之
Application no：特願2014-251235 Date applied：2014.12
Announcement no：特開2016-113312 Date announced：2016.06
Patent/Registration no：特許6474601 Date registered：2019.02 Date issued：2019.02
Country of applicant：Domestic Country of acquisition：Domestic
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製鋼スラグ粒及びこれを用いた水稲の収量を増加させ、かつ、メタンガスと亜酸化窒素ガスの発生を抑制する方法
新日鐵 , 住友商事, 千葉大学
Application no：2010-248938 Date applied：2010.11
Country of applicant：Domestic
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汚染地盤の浄化方法、及び、汚染地盤の浄化剤
大林組, 千葉大学
Application no：2010-172579 Date applied：2010.07
Country of applicant：Domestic
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水蒸気処理液による菌類生育抑制方法及び水蒸気処理液の製造方法
IHI, 千葉大学
Application no：2008-281660 Date applied：2008.10
Announcement no：2010-105956 Date announced：2010
Country of applicant：Domestic
Works 【 display / non-display 】
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Studies on effect of land-use change on greenhouse gases emission from tropical peatland in Indonesia
1997
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Studies on Sustainable Land Use and Soil Ecosystems in Peat Land, Sarawak, East Malaysia
1996
Honours, Awards and Prizes 【 display / non-display 】
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ESAFS Award
2019 East and Southeast Asia Federation of Soil Science
INUBUSHI Kazuyuki
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学会賞
2005 日本土壌肥料学会
犬伏 和之
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7th Oze Award
2004
INUBUSHI Kazuyuki
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Presentation Recognition Award
1994 International Society of Soil Science
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Progress Award, Japanese Society of Soil Science and Plant Nutrition
1987 Japanese Society of Soil Science and Plant Nutrition
Scientific Research Funds Acquisition Results 【 display / non-display 】
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2020.04
Research Institute for Humanity and Nature (RIHN), Kyoto, Japan Grant-in-Aid for Scientific Research
Sachiko HAYASHIDA
Authorship：Coinvestigator(s)
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Microbial properties as bioindicators of soil quality in agroecosystems
2019.11 - 2020.02
JASSO Tanken
Kazuyuki Inubushi, Silvio Yoshiharu Ushiwata, Miwa Yashima
Authorship：Principal investigator
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GOSAT−2と地上観測による全球のメタン放出量推定と評価手法の包括的研究
2018 - 2021
環境省 科学研究費補助金 その他
犬伏 和之、斎藤尚子
Authorship：Coinvestigator(s)
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水田土壌での水稲根有機物の定量化と微生物多様性の解明に関する中国科学院との共同研究
2017 - 2020
JSPS 科学研究費補助金 その他
犬伏 和之、犬伏 和之
Authorship：Principal investigator Grant type：Competitive
Presentations 【 display / non-display 】
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異なる土壌管理が土壌酵素と土壌理化学性および生物性に及ぼす影響
犬伏和之, 高橋萌会, 松原 誠, 大島宏行, 加藤 拓, 岡本昌広
日本土壌肥料学会関東支部大会 （群馬大会） 2025.11
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EFFECT OF IRON MATERIALS ON METHANE EMISSION FROM PADDY SOIL
Kazuyuki INUBUSHI, Hiroyuki OSHIMA, Taku KATO
ISSAAS2025 2025.11
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乾燥汚泥とバイオ炭混合肥料の混合割合ならびに形状がリン酸の肥効に及ぼす影響
大島宏行, 宮川桜, 佐原伊織, 加藤拓, 犬伏和之
日本土壌肥料学会新潟大会 2025.09
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鶏糞堆肥添加による野菜残渣堆肥の肥効率と土壌改良効果に関する研究
楢木野洸人, 佐古秀人, 宮林孝輔, 齋藤温, 千代田路子, 笹原亮, 永石弘, 犬伏和之, 大島宏行, 加藤拓
日本土壌肥料学会新潟大会 2025.09
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草地管理方法の違いが阿蘇外輪山東部の 地下部バイオマス及び土壌炭素蓄積量に与える影響 (第二報) Invited
齋藤温子, 坂上翼, 山口滉太, 町田怜子, 下嶋聖, 茂木もも子, 山田晋, 今井伸夫, 犬伏和之, 大島宏行, 加藤拓
日本土壌肥料学会新潟大会 2025.09
Teaching Experience 【 display / non-display 】
Committee Memberships 【 display / non-display 】
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National Academy of Agricultural Sciences, India Foreign Fellow
2023.01
Committee type：Academic society
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IRRI South Asia Regional Centre, ISARC, Varanasi, India. Advisory Committee Member,
2019.10
Social Activities 【 display / non-display 】
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Inubushi (2020) Sustainable straw management for environment and soil fertility
Role(s)： Guest, Panelist, Lecturer
Aakash project, Research Institute for Humanity and Nature (RIHN), Kyoto, Japan. First Webinar of the Aakash Webinar Series 2020.12
Type：Seminar, workshop
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Inubushi (2020) Soil perspective – Processes and feasible mitigation
Role(s)： Guest, Panelist, Lecturer
National Institute for Environmental Studies, Global Carbon Project On-line Forum Global Nitrous Oxide budget 2020 and the connection between climate change and our food production system 2020.10
Type：Seminar, workshop
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Inubushi (2020) Recent rice research and future climate change
Role(s)： Lecturer, Consultant
Tamil Nadu Rice Research Institute TRRI Rice Webiner Advanced in Rice Researches for Food Sustainability and Environmental Sustainability 2020.08
Type：Seminar, workshop
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Soil Microbiology and Climate Change
Role(s)： Lecturer
Tamil Nadu Agricultural University, India 2020.05
Type：Lecture
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犬伏 和之 (2019) Rattan Lal博士，日本国際賞Japan Prize受賞講演会
Role(s)： Host, Planner, Report author
日本土壌肥料学会 日本土壌肥料学雑誌 90(3) : 239 2019.09
Type：Lecture