Corn Yield Forecasts

Growth stages of corn at rainfed sites in monitored by Corn Yield Forecast Center

2019 Corn Yield Forecasts as of July 15 July 19, 2019

Corn is still in vegetative stages across much of the Corn Belt. At this point, delayed planting doesn't appear to have affected yields at irrigated sites. Yields for rainfed sites vary considerably, with those on the western edge trending above normal.

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Forecasted Corn Yields as of July 15, 2019 July 19, 2019

Table 1. Data from simulations of 2019 end-of-season corn yield potential and real-time crop stage performed on July 15. (Full story at https://cropwatch.unl.edu/2019/2019-corn-yield-forecasts-july-15).

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Map of the Corn Belt showing locations for the 2019 Corn Yield Forecasts
Map of the Corn Belt showing locations for the 2019 Corn Yield Forecasts

2019 Corn Yield Forecasts: Approach and Interpretation of Results July 8, 2019

Agronomists address how the Corn Yield Forecast Center develops yield forecasts, what to expect during the growing season, and how to use the forecasts to inform farm decisions. Tables detailing soil types and crop management for each of the 41 locations are included.

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Chart showing deviations of yield forecasts to actual yields at four times during the season for 10 years.

The Big Unknown in Corn Yield Forecasts June 27, 2019

Each year surveys and models are used to forecast final corn yields as the crop progresses through the season. Cropping Systems Specialist Roger Elmore looks at two forecast systems and examines 10 years of USDA National Agricultural Statistics Data to see how forecasts deviated from actual yields.

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Map indicating end-of-season deviations from average corn yields for select sites in the Corn Belt
Map indicating end-of-season deviations from average corn yields for select sites in the Corn Belt

Oct. 16 Corn Yield Forecast - End of Season Report October 19, 2018

The end-of-season corn yield report finds that high temperatures during vegetative stages had little impact on forecasted yield potential. This is the final article in the series looking at simulated crop stages and yield forecasts for 41 locations across the US Corn Belt.

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Map of the Corn Belt showing sites with above-, near-, and below-normal forecasted corn yields for 2018.

Aug. 22 Corn Yield Forecast: Shorter Crop Cycle Did Not Lead to Below-Average Yield August 23, 2018

Corn progress and yield forecasts for 41 sites across the Corn Belt indicate near- or above-average yields for most sites. High temperatures early in the season increased the rate of corn development and led to a shorter crop cycle, but do not appear to have diminished yields.

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Corn field
Rainfed corn near Grant, planted about May 27. (Photo by Alexander Tonon Rosa and Italo Kaye Pinho de Faria)

2018 Corn Yield Forecasts: Physiological Maturity Expected Before Historical Averages August 2, 2018

Corn growth simulations across the Corn Belt indicate early corn maturity of one to two weeks for most sites. Simulated corn yields for rainfed and irrigated sites across the region near or above normal at most sites.

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July 31, 2018 Corn Yield Forecast: Table 1 August 2, 2018

Table 1. Data from simulations of 2018 end-of-season corn yield potential and real-time crop stage performed on July 31. 
(Full story at 2018 Corn Yield Forecasts: Physiological Maturity Expected Before Historical Averages)

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