Calculating the Soybean Yield Gap for WI Soybean Farmers

Shawn P. Conley
Soybean and Wheat Extension Specialist

Shawn Conley is embarking on a State‐Wide Project aimed at generating baseline producer data on current soybean management practices in Wisconsin’s production systems. This project is funded by the Wisconsin Soybean Marketing Board and the North Central Soybean Research Program (NCSRP). The project goal is to identify the key factors that preclude the State’s Soybean Producers from obtaining yields that should be potentially possible on their respective individual farms. The term used for the difference between what yield is possible on your farm each year and what you yield you actually achieve is called a “Yield Gap”.

The project is asking Crop Producers in Wisconsin to provide yield and other agronomic data specific to their soybean production fields. With that data, the project will conduct an in‐depth analysis of what on‐farm factors might be causing a Yield Gap on producer farms. They intend to provide annual reports to all crop producers informing them of what factors they may have identified that, based on their analysis of the data collected from farms, are likely limiting them from achieving soybean yields closer to yield potential that is likely possible on their farms!

Below are links that can also be found on Shawn Conley’s webpage describing the process, guidelines for data collection, as well as the data collection form. Please know that this data will not be shared individually and your information will be held strictly confidential. Feel free to notify Shawn if you have any questions or concerns regarding this request. Please return all completed forms to his address below!

Yield Gap: Letter to WI Soybean Producers
Yield Gap: Guidelines for Data Collection
Yield Gap: Data Collection Form


Shawn P. Conley
Department of Agronomy
University of Wisconsin, Madison
1575 Linden Drive
Madison, WI 53706

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