03/03/2026

During this reporting period only -

Manuscripts published or forthcoming:

Khanal, B., T. Mieno, K. Schoengold, and D. S. Bullock. “Optimizing Precision Conservation with On‑Farm Precision Experiment Data: The Role of Crop Insurance and Spatially Variable Profit.” Science of the Total Environment, 979 (April 2025). DOI: 10.1016/j.scitotenv.2025.179315.

Zhang, C., X. Li, T. Mieno, C. Diao, and D. S. Bullock. “Quadratic‑plateau geographically weighted regression model for estimating site‑specific economically optimal input rates.” Computers and Electronics in Agriculture, 237 (2025): 110655.

Du, Q., T. Mieno, and D. S. Bullock. “Measuring the estimation bias of yield response to N using combined on‑farm experiment data.” Journal of the Agricultural and Applied Economics Association, 4(3) (2025): 321–332.

Loewen, Sasha, and Bruce D. Maxwell. “Site‑specific weed management on organic grain farms using variable rate seeding and data‑driven simulation.” Weed Research 65, no.1 (2025): e12669.

Smith, Harrison W., Christopher J. Heffernan, Amanda J. Ashworth, L. Lanier Nalley, David S. Bullock, Jason Tullis, and Phillip R. Owens. “Harvesting Insights: Interpretable Machine Learning to Understand Environmental Drivers of U.S. Maize and Soybean Yield.” Scientific Reports. Published online February 2026.

Tibbs, R., N. Heller, D. S. Bullock, and M. A. Boerngen. “Midwestern Farmers’ Willingness to Engage with Precision Agriculture Technologies and On‑Farm Precision Experimentation.” Agronomy Journal. Accepted February 2026.

Bullock, D. S., B. Edge, and T. Mieno. “Management Zones Should Be for Zone Management.” Agronomy Journal. Accepted February 2026.

Presentations:

“A Proposal to the FY2025 NRCS CIGOFT Program” – DIFM/NC-1210 Annual Meeting, Clearwater, FL (Presenter: D.S. Bullock), 1/10/25

“Using On-farm Precision Experimentation to Incentivize Cost-effective Climate-Friendly Crop Research, Policy, and Production” – Opportunities for Extension in OFPE Conference, Clearwater, FL (Presenter: D.S. Bullock), 1/11/25

“A Higher Education Challenge (HEC) Grant Proposal” – Opportunities for Extension in OFPE Conference, Clearwater, FL (Presenter: D.S. Bullock), 1/11/25

“Opportunities in On-Farm Precision Experimentation with the DIFM Project” – Re:FARM Conference, Lviv, Ukraine (Presenter: D.S. Bullock), 2/12/25

“Opportunities in On-Farm Precision Experimentation with DIFM” – L’Agriculture de Précision Conference, Victoriaville, Quebec (Presenter: D.S. Bullock), 2/27/25

“Revolutionizing Agronomic Research through On-Farm Precision Experimentation” – NTU-CIA UIUC-CDA Joint Seminar (Presenter: D.S. Bullock), Virtual (Taipei), 4/30/25

“Opportunities in On-Farm Precision Experimentation with DIFM” – NRCS State Resource Conservationists Quarterly Teleconference (Presenter: D.S. Bullock), Virtual, 8/4/25

“Opportunities in On-Farm Precision Experimentation with DIFM” – McCain Inc. Sustainability Group (Presenter: D.S. Bullock), Virtual, 9/11/25

“Opportunities in On-Farm Precision Experimentation with DIFM” – Visiting Grand Farm Delegation (Presenter: D.S. Bullock), Urbana, IL, 9/18/25

“difm.farm: A Revolutionary System Helping Farmers Increase Profits” – Meeting with Nadia Cortez (Presenter: D.S. Bullock), Virtual, 9/23/25

“Reducing Nutrient Loss with difm.farm” – Illinois Sustainable Agriculture Partnership Policy Committee (Presenter: D.S. Bullock), Virtual, 10/24/25

“N Minus: A Nitrogen-Induced Profit-Loss Recovery Program” – DIFM/NC1210 Annual Meeting (Presenters: Mieno, Bullock, Du, Edge; delivered by Bullock), Tucson, AZ, 1/5/26