Don  Horneck


Water re-use
Soil quality

Graduate Students

Don Horneck
Extension Agronomist, Professor

Soil fertility / crop production / ammonia volatilization / biomass

Hermiston Agricultural Research and Extension Center
2121 S. First Street
Hermiston, OR 97838
United States
(541) 567-8321


Extension Research: Soil fertility/crop production, potatoes, onions, alfalfa, cereals. I offer expertise on a wide range of topics to the general public, growers and fieldmen in the area. I also represent agriculture's interests on committees. I am responsible for providing educational pesticide and CCA licensing opportunities for local growers and fieldmen. My primary concerns are profitability and environmental sustainability of local cropping systems.



PhD - 1993 - Soil Science with Chemistry and Environmental Engineering minors, Oregon State University, Corvallis, Oregon

M.S. -1984 - Agronomy/Soils, Univeristy of Illinois

B.A. - 1980 - Bilogy/Geology, Monmouth College, Monmouth, Oregon

Organizations and Affiliations:

  • American Society of Agronomy
  • Soil Science Society of America
  • Western Society of Soil Science
  • Council on Soil & Plant Analysis
  • Oregon Society of Soil Scientists
  • National Extension Association


  • CCA
  • CPAg
  • CPSSc
  • Pesticide Consultant


D. A. Horneck, D. M. Sullivan, J. S. Owen, J. M. Hart. 2011. EC 1478, Soil Test Interpretation Guide.

Horneck, D., Hamm, P.B. and Madsen, M. 2009. Impact of soil conditions on the ability to control Verticillium wilt of potato in the lower Columbia Basin. In Progress reports of the Washington Potato Commission. Pages  214-217.

Koenig R., D. Horneck, T. Platt, P. Petersen, R. Stevens, S. Fransen, B. Brown.  2009. Nutrient Management Guide: Dry land and Irrigated Alfalfa in Inland Washington-Oregon-Idaho. PNW 0611.  WSU, Pullman. WA.

Lutcher, Larry K., Wysocki, Donald  J., Corp, Mary K. and  Horneck, Donald A. 2009. Agronomic Guidelines for Flexible Cropping Systems in Dryland Areas of Oregon. EM 8999-E. Oregon State University. Corvallis. OR

B.G. Hopkins, D. A. Horneck, R. G. Stevens, J. W. Ellsworth, D. M. Sullivan. PNW597-E, Managing Irrigation Water Quality for Crop Production in the Pacific Northwest, August 2007, 24 pages.

D.A. Horneck, J.W. Ellsworth, B.G. Hopkins, D.M. Sullivan, R.G. Stevens. PNW 601-E, Managing Salt-affected Soils for Crop Production, November 2007, 21 pages.

D.A. Horneck, D. Wysocki, B. Hopkins, J. Hart, and R. Stevens. PNW 599-E, Acidifying Soil for Crop Production: Inland Pacific Northwest, September 2007, 15 pages.

Hart, J., R. Fletcher, C. Landgren, D. Horneck, S. Webster and M. Bondi. EM 8856-E, Christmas Tree Nutrient Management Guide for Western Oregon and Washington, February 2004, 32 pages.

Horneck, D., J. Hart, R. Stevens, S. Petrie and J. Altland. EM 8857-E, Acidifying Soil for Crop Production West of the Cascade Mountains (Western Oregon and Washington), February 2004, 11 pages, EM8857-E.

Horneck, D.A. 2004. Nutrient Management for Onions in the Pacific Northwest. Better Crops with Plant Food 88(1):14-16.