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Final corn yield forecasts and harvest considerations following excessive rainfall

by Jeff Coulter, Extension Corn Specialist

Final end-of-season forecasts of corn grain yield were recently made for several locations and states across the Corn Belt by University of Nebraska researchers. These forecasts suggest above-average yield for Minnesota and yields less than USDA’s forecasts for most other Corn Belt states.

Corn grain harvest in Minnesota will be widespread within a couple weeks. In fields that recently received excessive rainfall, care should be taken to minimize soil compaction from harvest and tillage operations, as outlined in a previous Crop News article and on Extension's soil management and health.

General rates of in-field drying of corn grain in Minnesota are below, but vary greatly with weather conditions:
  • 0.75 to 1.0 percentage points per day during September 15 to 25
  • 0.5 to 0.75 percentage points per day during September 26 to October 5
  • 0.25 to 0.5 percentage points per day during October 6 to 15
  • 0 to 0.33 percentage points per day after October 15

For more educational resources on corn production, visit Extension's corn production website.

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