Top States US Soybean Yield History

The information below is provided by the USDA NASS and documents the soybean yield history of the major soybean-producing states of the United States.  CropProphet, a soybean yield forecasting product, is designed to forecast the year to year variations of soybean production each day of the growing season.

An analysis of state soybean production history data indicates there are two causes of soybean production variations at the regional level in the United States.  Each is important to creating an accurate soybean yield forecast. The causes of year-to-year soybean production variation at the state and national level are:

1. The Soybean Yield Technology Trend – many types of technology are improving yields for soybeans. The result is an increased yield. i.e. how much crop can be produced on a given acre of farm-land.   The charts below show soybean yields from 1986 to 2019 as reported by the USDA.   The general upward slope of the line for each state is the technology trend.
2. Weather conditions during the soybean growing season – after removing the effect of the technology trend, the impact of weather on soybeans can be estimated.  The variations around the upward trend in the data on these charts are caused by weather conditions during the US growing season.  CropProphet uses the evolving weather conditions during each crop season to forecast end-of-season soybean production.

Iowa Soybean Yield History – Iowa Soybean Yield Per Acre History

Iowa’s maximum soybean yield achieved is 60 bu/a which occurred in 2016

Illinois

Illinois’s maximum soybean yield achieved is 63.5 bu/a which occurred in 2018

Indiana

Indiana’s maximum soybean yield achieved is 57.5 bu/a which occurred in 2016

Nebraska

Nebraska’s maximum soybean yield achieved is 61 bu/a which occurred in 2016

Ohio

Ohio’s maximum soybean yield achieved is 56 bu/a which occurred in 2018

Minnesota

Minnesota’s maximum soybean yield achieved is 52 bu/a which occurred in 2016