2023 - 2026 Elucidating the genetic mechanism controlling the growth of primary and lateral roots in soybean
2015 - 2018 Sustainable use of fertilizer in terms of resource scarcity: Possible cultivation of soybean independent of biological nitrogen fixation
2014 - 2016 Root phonemics: new method for analyzing root system
2012 - 2016 Construction of pasturing system for sustainable water environment in Mongolia
2010 - 2014 Assessment of resistance of rainfed lowland rice to aerobic condition in northeastern Thailand based on the dynamics of nutrients in soil
2011 - 2013 The Effects on Crop Production and Soil Carbon Sequestration of Root Production and Mortality in Paddy Rice using Organic Fertilizer
2010 - 2012 Development of environment-friendly sustainable rice farming with reuse of new purification plant sludge、 and application of iron or silicon
2007 - 2009 Life cycle assessment of bioethanol production systems
2000 - 2007 Root nodule and nitrogen fixation in relation to root system development in legumes
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Papers (59):
Ye Rongling, Oishi Kazuki, Tajima Ryosuke, Kameoka Emi, Kato Shin, Kikuchi Akio, Uno Toru, Homma Koki. Comparison of Leaf Area Dynamics of Soybean with Different Growth Habits. Abstracts of Meeting of the CSSJ. 2023. 255. 58-58
Rongling Ye, Ryosuke Tajima, Ayumi Sadaike, Daiki Saito, Momoko Ogawa, Issei Kawamura, Shun Ishimori, Takayuki Nakajima, Toru Uno, Kenichi Kano, et al. Mixed cropping of determinate and indeterminate soybean lines enhances productivity. Field Crops Research. 2023. 291. 108785-108785
Pepi Nur Susilawati, Ryosuke Tajima, Yuti Giamerti, Yi Yang, Muhammad Prama Yufdy, Iskandar Lubis, Koki Homma. Application of consecutive polyethylene glycol treatments for modeling the seminal root growth of rice under water stress. Scientific Reports. 2022. 12. 1
Kawamura Issei, Saito Daiki, Homma Koki, Nakajima Takayuki, Tajima Ryosuke. Mix cropping of determinate and indeterminate soybean cultivars to improve soybean productivity:V. Production efficiency based on LAI vertical distribution by quick assessment. Abstracts of Meeting of the CSSJ. 2019. 248. 0. 93-93
Obara Kasumi, Homma Koki, Tajima Ryosuke, Maki Masayasu, Saito Yuki, Hashimoto Naoyuki, Yamamoto Shuhei, Hongo Chiharu. Analysis of RGB images to estimate SPAD in rice for UAV remote sensing. Abstracts of Meeting of the CSSJ. 2019. 248. 0. 43-43
Ishimori Shun, Saito Daiki, Kawamura Issei, Homma Koki, Nakajima Takayuki, Tajima Ryosuke. Mix cropping of determinate and indeterminate soybean cultivars to improve soybean productivity:VI. Report of cultivation trials from 2016 to 2018 and lodging effect in 2018. Abstracts of Meeting of the CSSJ. 2019. 248. 0. 81-81
Predicting yield, flowering and harvesting dates of highbush blueberry using temperature data: a case study in Field Science Center of Tohoku University
(The 13th International Symposium on Integrated Field Science 2016)
Effect of arbuscular mycorrhizal fungal inoculation on the growth of Welsh onion in soil rich in available phosphate, and characterization of indigenous arbuscular mycorrhizal fungi isolated from the soil
(8th International Conference on Mycorrhiza 2015)