Takuji Ohyama

Tokyo University of Agriculture

Takuji Ohyama is a Professor of Faculty of Applied Biosciences, Department of Agricultural Chemistry, Tokyo University of Agriculture (2017 -present). He obtained a Ph.D. degree in agriculture from the University of Tokyo in 1980, and got an academic position in Niigata University in 1982. He has been a Professor of Faculty of Agriculture at Niigata University from 1982 till 2017. He has also served as Dean of Graduate School of Science and Technology at Niigata University (2010-2014) and Dean of Faculty of Agriculture at Niigata University (2006-2010). He was a president of Japanese Society of Soil Science and Plant Nutrition during 2007-2009. His research interests are: nitrogen fixation and metabolism in soybean plants, new technology of deep placement of slow release nitrogen fertilizers for soybean cultivation, and nitrogen and carbon metabolism in tulip, curcuma, and cucumber. He is also interested in use of stable isotopes and positron emitting radioisotopes.

2books edited

6chapters authored

Latest work with IntechOpen by Takuji Ohyama

Biological nitrogen fixation has essential role in N cycle in global ecosystem. Several types of nitrogen fixing bacteria are recognized: the free-living bacteria in soil or water; symbiotic bacteria making root nodules in legumes or non-legumes; associative nitrogen fixing bacteria that resides outside the plant roots and provides fixed nitrogen to the plants; endophytic nitrogen fixing bacteria living in the roots, stems and leaves of plants. In this book there are 11 chapters related to biological nitrogen fixation, regulation of legume-rhizobium symbiosis, and agriculture and ecology of biological nitrogen fixation, including new models for autoregulation of nodulation in legumes, endophytic nitrogen fixation in sugarcane or forest trees, etc. Hopefully, this book will contribute to biological, ecological, and agricultural sciences.

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