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Stephen Machado

Associate Professor, Dryland Systems Agronomist
Oregon State University
Columbia Basin Agricultural Research Center
PO Box 370
Pendleton, OR 9801

stephen.machado@oregonstate.edu

 

Education

Ph.D. Crop Physiology, Kansas State University, Manhattan (USA), 1997
M.S. Crop Physiology, Reading University, Reading (UK), 1987
B.S. General Agriculture, University of Swaziland, Luyengo (Swaziland), 1984
Diploma, Animal Sciences, University of Swaziland, Luyengo (Swaziland), 1980

Research Interests

Development of biologically, economically, and socially sustainable farming systems in the Pacific Northwest.

Technical Support Staff

Christopher Humphreys-Faculty Research Assistant

Publications

Refereed Journal Articles

Smiley, R. W., and S. Machado. 2009. Pratylenchus neglectus reduces yield of winter wheat in dryland cropping systems. Plant Disease 93:263-271.

Extension Bulletins

Machado, S., L. Pritchett, E. Jacobsen, S. Petrie, R. Smiley, D. Ball, D. Wysocki, S. Wuest, H. Gollany, and W. Jepsen. 2009. P. 114-129. Long-term experiments at CBARC-Moro and Center of Sustainability, Heppner, 2007-2008. Oregon Agricultural Experiment Station Special Report 1091.

Smiley, R., S. Machado, L. Pritchett, E. Jacobsen, A. Thompson, J. Sheedy, S. Easley, and J. Gourlie. 2009. Associations among cropping systems, root-lesion nematodes, and wheat yield. p. 90-103. Dryland Agricultural Research annual report 1091.

Machado, S., L. Pritchett, E. Jacobsen, S. Petrie, R. Smiley, D. Ball, D. Wysocki, S. Wuest, H. Gollany, and W. Jepsen. 2008. Long-term experiments at CBARC-Moro and Center of Sustainability, Heppner, 2006-2007. Oregon Agricultural Experiment Station Special Report 1083.

Machado, S., L. Pritchett, E. Jacobsen, S. Petrie, R. Smiley, D. Ball, D. Wysocki, S. Wuest, H. Gollany, and W. Jepsen. 2007. Long-term experiments at CBARC-Moro and Center of Sustainability, Heppner, 2005-2006. Oregon Agricultural Experiment Station Special Report 1074.

Machado, S., L. Pritchett, E. Jacobsen, S. Petrie, R. Smiley, D. Ball, D. Wysocki, S. Wuest, H. Gollany, and W. Jepsen. 2006. Long-term experiments at CBARC-Moro and Center of Sustainability, Heppner, 2005. Oregon Agricultural Experiment Station Special Report 1068.

Published Abstracts

Machado, S., D. Ball, S. Petrie, L. Pritchett, and R. Smiley. 2008. Developing profitable and sustainable cropping systems for North-Central Oregon and South-Central Washington. Poster presented at the 2008 GSA, ASA, CSSA, SSSA Annual Meetings, 5-9 Oct., Houston, TX. ASA, CSSA, and SSSA Abstracts.

Machado, S., L. Pritchett, R. Smiley, D. Ball, and S. Petrie. 2008. Spring Barley improves yield in direct seeded wheat. Poster presented at the 2008 Idaho Oregon Grains Conference, Coeur d’Alene, Idaho, December 2008.

Experiment Station Research and Extension Reports

Schillinger, W.F., B.S. Sharratt, D.L. Young, A.J. Busacca, W.L. Pan, A.C. Kennedy, C.S. Claiborn, B.K. Lamb, A.D. Esser, F.L. Young, B.E. Frazier, S. Machado, C.O. Stockle, J.Q. Wu, M. Flury, P.R. Wandschneider, and C.A. Warriner. 2004. 73. p. Northwest Columbia Plateau PM10 Project. 2004 Summary Report. Highlights of research achievements from 1998 through 2004.