Dr. Upendra Singh, Deputy Director, Headquarters Research, specializes in soil fertility and systems modeling. For more than 30 years, he has focused on the development and application of crop simulation models and decision support systems for agricultural research, development, and extension.

As a member of the International Consortium for Agricultural Systems Application, Singh played a major role in developing the Decision Support System for Agrotechnology Transfer (DSSAT), which has been used by IFDC and other international organizations for more than 20 years. In addition, he was instrumental in developing the CERES-Rice model, the SUBSTOR-Aroids model, and the Phosphate Rock Decision Support System (PRDSS). Through these tools, users can make sounder, more environmentally sustainable decisions and provide effective technology transfer, particularly in developing countries.

In recent years, Singh has led research on quantifying ammonia volatilization and denitrification losses from flooded rice fields and the potential of fertilizer management practices, such as urea deep placement, to mitigate greenhouse gas emissions from fertilizer. In addition, Singh is working with scientists, engineers, and farmers to develop and evaluate fertilizer products that improve nutrient use efficiency, recycle wastes and biomass, reduce nitrogen losses, and perform well under a variety of conditions.

Training is an integral part of Singh’s work. He has organized and conducted over 60 international training programs and workshops (more than 1,500 participants trained) in 28 countries.

Singh holds a Ph.D. and master’s degree in soil science from the University of Hawaii and a bachelor’s degree in chemistry and biology from the University of the South Pacific.