Stephen Machado

Professor, Dryland Cropping System Agronomist
stephen.machado [at]

Office: 541-278-4416

Columbia Basin Agricultural Research Center

Columbia Basin Agricultural Research Center 105

Columbia Basin Agricultural Research Center 48037 Tubbs Ranch Road

Columbia Basin Agricultural Research Center
48037 Tubbs Ranch Road
Adams, OR 97801

Stephen Machado leads the OSU's long-term research activities at CBARC Pendleton, CBARC Moro, and in Heppner in eastern Oregon. He is the Dryland Cropping Systems Agronomist for the semiarid Northcentral and Northeast Oregon. His responsibilities include establishing research priorities, developing and executing comprehensive research leading to more sustainable dryland cropping systems in semiarid eastern Oregon. Stephen conducts cropping systems research to develop economically and biologically sustainable agricultural practices for cereals, legumes, and new crops. Specific research work includes but is not limited to crop rotations, long-term experiments, soil organic matter, alternate crops, drought tolerance/resistance and disease interactions, site-specific farming, organic farming, and biochar. His main carrier interests are in solving agricultural problems to ensure sustained food production and to alleviate hunger in the world without adverse effects to the environment.

Curriculum Vitae: 

Profile Field Tabs

Affiliated with: 
Crop and Soil Science
Do you accept grad students?: 
I accept graduate students for the Crop and Soil Science Department
Experiment Station
Beyond OSU
Personal Interests: 

Stephen is originally from Zimbabwe. Like many Africans in the Diaspora, Stephen has always wanted to give back and help other less privileged kids in Zimbabwe. AAAPD and Shamwari International have provided the much needed platform to make his dream come true. 


Stephen Machado is a Professor of Crop Physiology/Agronomy at the Oregon State University’s Columbia Basin Agricultural Research Center (CBARC) located near Pendleton, east of the Cascades. He has a Diploma in Animal Science and BS in Agriculture from the University of Swaziland, MS in Crop Physiology from Reading University in England, a PhD in Crop Physiology/Agronomy from Kansas State University, and has a MBA at Eastern Oregon University. Stephen was Principal Research Officer at the Department of Research and Specialist Services in Harare, Zimbabwe conducting research on wheat and barley and the Principal Investigator of a Precision Agriculture Project involving 12 scientists at the Texas A&M University’s Experiment Station in Lubbock, Texas. Stephen joined OSU in 2001 and is currently stationed at CBARC where he is responsible for conducting cropping systems research to develop economically and biologically sustainable agricultural practices for cereals, legumes, and new crops while protecting the environment. His research work includes crop rotations, long-term experiments, alternative crops, drought tolerance, site-specific farming, and organic farming.  Stephen is also involved regionally, nationally, and internationally. He has served as an Associate Editor for the Agronomy Journal, the President of the Biometry Division of the Tri-Societies (American Society Agronomy, Crop Science Society of America, Soil Science Society of America), and the President of the Western Crop Science Society of America. He is a co-founder of Association of African Agricultural Professionals in the Diaspora (AAAPD) which is actively involved in capacity building and the development of African small holder agriculture. Stephen is also a board member of the Pendleton Farmers Market and Shamwari International that is involved in assisting orphaned and disadvantaged children in Zimbabwe.

My Publications