TONOOKA Yuki

写真a

Title

Professor

Profile

1 Apr 2015 Research Administrator of University of the Ryukyus
4
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Current Affiliation Organization 【 display / non-display 】

  • Duty   University of the Ryukyus   Organization for Research Promotion   Research Planning Office   Professor  

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University 【 display / non-display 】

  • 1993.04
    -
    1997.03

    Tohoku University   Faculty of Science   Department of Biology   Graduated

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Graduate School 【 display / non-display 】

  • 1997.04
    -
    2002.03

    Tohoku University  Graduate School, Division of Natural Science  Institute of Biology  Doctor's Course (second term)  Completed

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Academic degree 【 display / non-display 】

  • Tohoku University -  Doctor (Science)

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External Career 【 display / non-display 】

  • 2013.04
    -
    2015.03

    Yamaguchi University  

  • 2015.04
    -
    2018.03

    University of the Ryukyus  

  • 2018.04
    -
    2020.09

    University of the Ryukyus  

  • 2020.10
    　
    　

    University of the Ryukyus  

  • 2023.07
    　
    　

    Japan Society for Intellectual Production  

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Affiliated academic organizations 【 display / non-display 】

  • 2003.06
    -
    Now
     

    Japan Society for Intellectual Production 

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Research Interests 【 display / non-display 】

  • 産学連携、知的財産、ライフサイエンス、細胞生物学

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Research Areas 【 display / non-display 】

  • Life Science / Cell biology

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Published Papers 【 display / non-display 】

  • Growth Characteristics and Response of Newly-Planted Itobasho (Musa balbisiana) to Fertilizer Application from Initial Growth to Community Formation

    Naoko UEHARA, Yoshitaka HIGA, Hiroki SUJIHARA, Kanoka KINJYOU, Naoko ISOMURA, Masaki MATAYOSHI, Tomomi KINJYOU, Yutaka OGIDOH, Hidekazu GIBO, Yuki TONOOKA, Mieko TAIRA, Ryuichi SUWA

    Tropical Agriculture and Development ( Japanese Society for Tropical Agriculture )  69 ( 4 ) 127 - 136   2025 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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    To understand the subtropical growth characteristics and fertilizer suitability for the fiber crop Itobasho (Musa balbisiana), a new field was established on Okinawa's main island's northern flatlands to develop an appropriate fertilizer management system. Itobasho plants were cultivated in the area, and their growth characteristics and responses to fertilizer application were investigated. Approximately 20 g of nitrogen (N), phosphate (P), and potassium (K) in each were applied per plant per year to the newly-planted Itobasho until the fertilizer reached saturation and the plant community was established. Observations suggest that applying 10 g of N, P and K fertilizer in the spring and an additional 10 g of the same fertilizer as topdressing in the autumn proved more effective than applying 20 g of N, P and K fertilizer in the spring. The rapid elongation and growth of the main stem observed 2-year post-planting, may have resulted from the emergence and growth of suckers and the formation of colonies. Suckers emerged and grew more quickly than the main stem in the early stages of Itobasho cultivation under moderate fertilizer conditions. These results suggest the need for cultivation management to promote the growth of suckers and the provision of shading conditions to alleviate the stagnation of overall pseudostem elongation and growth. Genetic analysis revealed that the species cultivated in the Itobasho region was Musa balbisiana—a banana ancestor.

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  • A preface for the feature articles “Academy-industry collaboration and university research administrators in national regional universities"

    TONOOKA Yuki

    Journal of the Japan Society for Intellectual Production ( Japan Society for Intellectual Production )  18 ( 2 ) 2_1 - 2_6   2022.06

    Type of publication: Research paper (scientific journal)

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    <p>It has been about 10 years since the University Research Administrators (URAs) were introduced into the academic organizations in Japan. Through the development programs of URAs (2011-2012) by the Ministry of Education, Culture, Sports, Science and Technology Japan (MEXT) and its follow-ups, many URAs are engaging in research promotion activities and are acknowledged as specialists in the field of research management. Prior to the introduction of URAs, many other specialists, such as academy-industry coordinators or license associates, had committed to the research promotion activities in the universities. For the development and establishment of specialists for academy-industry collaboration, MEXT carried out some development programs (2008-2012). At present, national universities are required to meet social demands and to decide their manner of administration. Such universities have developed the specialists for research promotions based on the results or models shown by previous programs. In the feature articles, URAs belonging to three national regional universities, Kagoshima University, Saga University and Fukui University, introduce their activities on academy-industry collaboration and research promotion.</p>

  • A feasibility study on essential oil extraction from vetiver planted as green belts

    SUWA Ryuichi, OOMIJA Kodai, NISHIHAR Takashi, TAKAHASHI Masahiro, SUMI Hidekazu, TONOOKA Yuki, KAWANO Emiko

    Japan Journal of Aromatherapy ( Aroma Environment Association of Japan )  21 ( 3 ) 19 - 23   2020.06

    Type of publication: Research paper (scientific journal)

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    <p>In Okinawa Prefecture, Japan, red soil erosion from the upland fields is one of the main causes of marine pollution. Vetiver (<i>Vetiveria zizanioides</i>) has been planted as a green belt in wide areas in the Okinawa Prefecture to prevent soil erosion. In the present study, the researchers investigated the feasibility of extracting essential oil from vetiver in comparison with commercial essential oil by examining the differences in oil extraction rate and fluctuation, in terms of the presence/absence of its season-dependent oil components. In this study, the two commercial essential oils from Indonesia and Sri Lanka that were used for comparison differed in composition. The major component of the essential oil extracted from vetiver in the present study was alcohol, including khusimol and vetiselinol, which was similar to the commercial essential oil from Indonesia. The oil extraction rate (per dry weight) in early summer was 0.62%, but it was 0.34% in early winter. On another note, there was almost no fluctuation in the essential oil components collected in each period. This finding suggested that it is easy to stabilize the quality when the essential oil will be produced commercially. Combining the agriculture and aroma industries via the production and marketing of essential oil from green belt vegetation will help prevent soil erosion and lessen marine pollution in the future.</p>

  • Development of next-generation light irradiation techniques for Japanese plant factory system powered by light-emitting diode

    Shimokawa A.

    Acta Horticulturae ( Acta Horticulturae )  1271 ( 1271 ) 85 - 92   2020.02 [ Peer Review Accepted ]

    Type of publication: Research paper (international conference proceedings)

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  • Development of Higher Yield and High Quality Mango Production System based on Internet of Things

    Shiroma Yasushi, Afuso Hitoshi, Suwa Ryuichi, Kinjo Atsushi, Tonooka Yuki, Kaga Takeshi, Nagayama Itaru, Tamaki Shiro, Maharjan Gauri

    IEEJ Transactions on Industry Applications ( The Institute of Electrical Engineers of Japan )  139 ( 2 ) 166 - 173   2019.02

    Type of publication: Research paper (scientific journal)

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    <p>Mango is a popular seasonal fruit in summer, and mango production in the Okinawa prefecture is the largest in Japan. However, the growth process of mangoes is susceptible to changes in sunshine, temperature, and other factors. In this research, to produce mangoes without being influenced by the natural environment, we will develop a production system that can positively realize environmental measurement and control by using an IoT sensing system. Specifically, we introduced local CO<sub>2</sub> application technology and a supplemental LED lighting system with the aim of activating photosynthesis by mango trees.</p>

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Books 【 display / non-display 】

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Other Papers 【 display / non-display 】

  • Efforts to solve social issues through KYU-OKI Caravan 4

    TONOOKA Yuki, TASHIRO Koshi, HONDA Ichiro, BANG HyunJung

    Journal of the Japan Society for Intellectual Production ( Japan Society for Intellectual Production )  21 ( 1 ) 1_7 - 1_12   2024.12

     

    DOI CiNii Research

  • Collaboration Hub: Initiatives by Kyushu-Okinawa's Industry-Academia Coordination for Promoting Agricultural, Forestry, and Fisheries Exports

    BANG HyunJung, FUKUDA Susumu, HONDA Ichiro, TASHIRO Koji, NISHIKATA Naoko, NAKATAKE Sadafumi, TONOOKA Yuki, OHNO Tomio

    Journal of the Japan Society for Intellectual Production ( Japan Society for Intellectual Production )  20 ( 2 ) 2_1 - 2_8   2024.06

     

    DOI CiNii Research

  • Development of facility horticulture system aimed at early harvesting and quality improvement of mango

    玉城史朗, 金城篤史, 平良英三, 城間康, 殿岡裕樹

    電気学会次世代産業システム研究会資料   IIS-17 ( 102-103.105-112 )   2017

     

    J-GLOBAL

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