Sally is the Director of the Crops Testing Program in the Dept. of Soil and Crop Sciences. She first joined the program in 2010 as a research assistant, and then as a Research Agronomist after finishing graduate school. She is responsible for developing and maintaining a strong, innovative, research program in crop production management relevant to the needs of producers in Colorado. She organizes and participates in crop production outreach programs and publishes research trial results in addition to other content.

Sally earned her M.S. degree in Soil and Crop Sciences in 2012 from CSU where she studied agronomic factors affecting grain sorghum yield and maturity in Northeast Colorado.  She enjoys helping her husband with their dryland farm on the weekends. Sally is based in Akron, CO and is a Certified Crop Advisor.

Sally Jones-Diamond
Crops Testing Program Director
Dept. of Soil and Crop Sciences
40335 Co. Rd. GG
Akron, CO 80720
(970) 214-4611
sally.jones@colostate.edu

Jason joined the program as a Research Agronomist in 2024 and moved into a co-director role in 2025.  He is responsible for coordinating and managing crop variety and agronomy trials in corn, beans, and oilseeds and writing grants for large research projects.  Jason also gives public presentations on research results from the program.  He is a particularly interested in black-eyed pea and soil fertility research and has expanded our research in these areas.

Jason grew up in Ohio and earned a B.S in Agronomy from The Ohio State University in 1996.  He studied weed science and entomology.  He has worked in the Midwest as well as California and the Texas Gulf Coast for over 25 years.  He has owned a small produce farm, and enjoys spending time with his family.  Jason has been a Certified Crop Advisor since 2000 and is based in Akron, CO.

Jason Webb
Program Co-Director
Central Great Plains Research Station
40335 Co. Rd. GG
Akron, CO 80720
(970) 520-1359
jason.webb@colostate.edu

Ed joined the program as a Research Associate in 2015. He plants and harvests all of our variety trials across eastern Colorado. He also repairs, builds, and maintains equipment and vehicles that are used in the program. As the principal field person for the Crops Testing Program, Ed works with graduate students, Cooperative Extension agents, Research Station personnel, and staff at CSU and other universities. He also collaborates with area farmers for many of our trials.

Ed grew up on a farm and graduated from North Dakota State University in 1990. After graduation he worked in Wisconsin for a year as a crop consultant, and then farmed full-time while doing custom combining until 2002. Ed was a retail agronomist in South Dakota until 2010, when he and his family moved to Colorado and he worked as a manager and retail agronomist. Ed has been a Certified Crop Advisor since 2004.

Ed Asfeld
Research Associate
Central Great Plains Research Station
40335 Co. Rd. GG
Akron, CO 80720
(970) 554-0980
ed.asfeld@colostate.edu

Judy began working for the Crops Testing Program in 2010 after finishing graduate school. She does a bit of writing and a lot of editing, and helps with data analysis during the harvest season. She converts Crops Testing documents to a format that is accessible to low-vision and no-vision users. She keeps track of the cowpea accessions in CSU’s Mini-Core Collection of cowpea seeds. She is an extra hand when one is needed.

Judy earned her Ph.D. in CSU’s Soil and Crop Sciences Department. She took classes with an emphasis in plant breeding and genetics, and studied the genetics of the wild grasses Distichlis stricta and Distichlis spicata, both commonly called saltgrass. She earned a master’s degree in horticulture, studying seed germination in Distichlis. She has a B.S. in botany, a B.A. in journalism, and a B.A. in English. In her spare time, she studys foreign languages and attempts to grow plants that are wildly unsuited to the Colorado climate. She is based in Fort Collins.

Judy Harrington
Research Associate
Dept. of Soil and Crop Sciences
Fort Collins, CO 80523
judy.harrington@colostate.edu