Dr. Ruijun Qin is an Extension Agronomist at the Oregon State University (OSU) ‒ Hermiston Agricultural Research & Extension Center and an Assistant Professor at the Department of Crop and Soil Science of OSU. His extension and research activities focus on sustainable soil/plant nutrient & water management, crop production (potatoes, cereals, dry beans, alfalfa, grass seeds, peppermint, etc.), cropping system, wastewater reuse, environmental quality, and soil health. From 2006 to 2016, he had been employed by the San Joaquin Agricultural Research Center of the USDA-ARS and the University of California Davis, and his research was mainly focused on soil fumigation, high-value crop production, plastic mulching, and water management. Dr. Qin received his Ph.D. in Agronomy (2003) at the Swiss Federal Institute of Technology (ETH-Zurich, Institute of Agricultural Sciences). His research topics included root exudation under heavy metal stress, root morphology, and distribution of crop production and crop nutrition, tillage systems, and crop rotation in the temperate region. He received his MSc in Soil Science at the Chinese Academy of Agricultural Sciences (1995). He successfully carried out projects concerning soil aluminum toxicity, the use of soil organic amendments, and the productivity of cropping systems in the subtropical zone. Dr. Qin is an Associate Editor of the Agronomy Journal. He was the Chair of the Nutrient Management Professionals Community in 2020 and a member of the Agronomic Industry Award Committee and Environmental Quality Research Award Committee. He has published over 60 peer-reviewed research articles and acted as a reviewer for more than 20 peer-reviewed Scientific Journals.