Ruijun (Ray) Qin

Crop & Soil

Contact Ruijun (Ray) Qin



My extension and research program focuses field crop agronomy and soil/nutrient/water management of high value irrigated crops (including potato, wheat, field corn, alfalfa, grass seed, peppermint and other crops) grown in the in north-central and north-eastern Oregon (particularly, Morrow and Umatilla Counties) and as appropriate, south-central Washington. I am also interested in working with state regulatory agencies and local industry to develop environmentally sustainable and crop-effective strategies for dealing with reuse water and other by-products from local processing plants and beyond. Collaborating with HAREC colleagues, regional extension faculty, and faculty at other research stations and main campus, I am actively identifying, making recommendations for and finding solutions to important regional crop production questions to enhance production and profitability while increasing protection of soil, water and air quality.

Areas of Expertise: Nutrient/water management; Soil reclamation; Cropping system; Plant roots; Soil fumigation; Gaseous emissions (fumigant, N2O, and NH3)


  • Ph.D. – 2003 – Agronomy, Swiss Federal Institute of Technology Zurich, Switzerland
  • M.S. – 1995 – Soil Science, Chinese Academy of Agricultural Sciences, Beijing, China
  • B.S. – 1992 – Soil and Plant Nutrition, Shanxi Agricultural University, Shanxi, China

Organizations and Affiliations:

  • American Society of Agronomy
  • Soil Science Society of America.
  • Crop Science Society of America.
  • American Society for Horticultural Science.
  • Association for the Advancement of Industrial Crops

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