Friday, July 17, 2026
August N. Christenson Research and Education Building
Eastern Nebraska Research, Extension and Education Center
1071 County Road G, Ithaca, NE
Registration is required for participation.
About
This FREE event on 4Rs of Nutrient Stewardship features knowledge and tools to improve nutrient management, soil health, crop yields and water quality. This is a great opportunity to learn about 4Rs strategies to improve crop yield and profits while protecting the environment.
Earn 4.5 CEUs on Nutrient Management.
Attendance counts toward Lower Platte North NRD Nitrogen Certification.
2026 Agenda
8:30 – 9 am: Registration and light breakfast (provided)
9 am – Noon: Morning Sessions
9 – 9:05 am: Introduction – Javed Iqbal, Associate Professor of Soil Nutrient Management and Water Quality, Department of Agronomy and Horticulture, University of Nebraska–Lincoln
9:05 – 9:20 am: Remarks on 4Rs Practices – Sponsors
9:20 – 9:30 am: Scratch Card Questions (pre-session) – Aaron Nygren, Water & Integrated Cropping Systems Extension Educator, University of Nebraska–Lincoln
9:30 – 10 am: Efficiency and Reduction, Nebraska statewide programs around Nitrogen and the lessons learned – Alexa Davis, Soil and Water Programs Coordinator, Nebraska Department of Water, Energy, and Environment and Tyler Goeschel, General Manager, Little Blue Natural Resource District
10 – 10:30 am: How Much Do We Know About Potassium in Nebraska Corn and Soybean Fields? – Patricio Grassini, Professor of Agronomy, and Lucia Bonfanti, Doctoral Student, Department of Agronomy and Horticulture, University of Nebraska–Lincoln
10:30 – 10:40 am: Break
10:40 – 11:10 am: Global 4R Nitrogen Management: Cutting Nitrate Losses Without Sacrificing Corn Yield – Adetunji Adewole, Postdoctoral Research Associate, Department of Agronomy and Horticulture, University of Nebraska–Lincoln, and Javed Iqbal
11:10 – 11:40 am: Are We Managing Phosphorus Right? Insights for Corn and Soybean Production – Javed Iqbal
11:40 am – 12:10 pm: Site Specific Sulfur Source and Placement for Corn and Soybean – Gurbir Singh, Assistant Professor of Soil Science, University of Missouri
12:10 – 12:20 pm: Scratch Cards Questions (post-session) – Aaron Nygren
12:20 – 1 pm: Lunch (provided)
1 – 3 pm: Afternoon Session – Demonstrating Nutrient Management Impacts on Corn Yield and Profitability
Location A (1hr): Phosphorus (P) and Potassium (K) Management – Field Demonstrations
Location B (1hr): Sulfur (S) and Nitrogen (N) Management – Field Demonstrations
3 pm: Adjourn
4Rs Field Day Organizers
Coordinator:
Javed Iqbal, Associate Professor of Soil Nutrient Management and Water Quality, Department of Agronomy and Horticulture, jiqbal2@unl.edu or 402-472-1432
Joe Luck, Professor of Biological Systems Engineering, Associate Director, ENREEC
Aaron Nygren, Nebraska Extension Water and Integrated Cropping Systems Extension Educator
Guillermo Balboa, Research Assistant Professor, Department of Agronomy and Horticulture
