This presentation was recorded at the 2025 Field Advisor Forum on January 16th in Champaign, IL.

Soybeans can remobilize nutrients from lower nodes to newly developing ones, but more research is needed to determine which nutrients and in what amounts become available. Dr. Connor Sible discusses this Illinois Soybean Association checkoff-funded project, which uses tissue testing to provide insights and refine in-season nutrient recommendations for maximizing soybean yield.

Dr. Connor Sible is a research assistant professor in the Department of Crop Sciences at the University of Illinois, where he earned his M.S. and Ph.D. His research focuses on optimizing corn and soybean production systems by improving the interaction between products and practices to boost grain yields. His graduate work categorized biological and biostimulant products, identifying how and why they enhance fertilizer efficiency and yields. Sible also studies agronomic inputs and crop residue management to improve soil nutrient supply. He frequently presents his research at field days, extension conferences, trade shows, and international events. A native of Byron, Illinois, he enjoys walking his dogs—though they often walk him.

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About the Author: Kelsey Litchfield

Kelsey Litchfield is the Agronomic Outreach Specialist for the Illinois Soybean Association. In her role, she manages Field Advisor's media platforms and assists the agronomy team with events and field days. A native of Rio, IL, Kelsey earned her bachelor’s degree from University of Illinois Urbana-Champaign in 2017 where she double majored in Agricultural Communications and Broadcast Journalism.

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