Takuji Ohyama

Tokyo University of Agriculture

Takuji Ohyama was born in Japan in 1951. He obtained a Ph.D. with a thesis entitled “Studies on the fate of nitrogen fixed in soybean nodules” in 1980 from the University of Tokyo. Dr. Ohyama is currently a full professor in the Faculty of Applied Biosciences, Department of Agricultural Chemistry, Tokyo University of Agriculture. He was a professor in the Faculty of Agriculture, Niigata University, from 1982 to 2017. His research interests include symbiotic nitrogen fixation and metabolism in soybean plants, new technology of deep placement of slow-release nitrogen fertilizers for soybean cultivation, nitrogen and carbon metabolism in tulip, curcuma, and cucumber, and the use of stable isotopes and positron-emitting radioisotopes. Dr. Ohyama has published more than 150 papers and 20 book chapters. He has also edited five books.

3books edited

6chapters authored

Latest work with IntechOpen by Takuji Ohyama

Nitrogen is the most important nutrient in agricultural practice because the availability of nitrogen from the soil is generally not enough to support crop yields. To maintain soil fertility, the application of organic matters and crop rotation have been practiced. Farmers can use convenient chemical nitrogen fertilizers to obtain high crop yields. However, the inappropriate use of nitrogen fertilizers causes environmental problems such as nitrate leaching, contamination in groundwater, and the emission of N2O gas. This book is divided into the following four sections: “Ecology and Environmental Aspects of Nitrogen in Agriculture”, “Nitrogen Fertilizers and Nitrogen Management in Agriculture”, “N Utilization and Metabolism in Crops”, “Plant-Microbe Interactions”.

Go to the book