Haishun Yang - UNL Associate Professor of Agronomy and Horticulture

Corn field with a heavy cloud cover

Corn and Clouds: “…from both sides now…”

November 6, 2019
Solar radiation and temperature data for the third week of August in central Nebraska indicates it likely contributed to the lower-than-expected yields being reported by many growers this year.

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Map showing probability of deviation from normal yields for rainfed sits in Nebraska and Kansas

2019 Corn Yield Forecasts as of September 17

September 19, 2019
Forecasted end-of-season yields for rainfed corn across the Corn Belt indicate above-average yield at two-thirds of the sites, with yields well above historical averages in Nebraska, Kansas, and Missouri. See data for individual irrigated and rainfed sites.

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Map showing likelihood of yield deviation from the long-term average yield potential for irrigated corn sites in Nebraska and Kansas.

2019 Corn Yield Forecasts as of August 21

August 22, 2019
There is a high probability of near- or above-average yields at all but two of the 37 locations studied. Corn has reached dough stage at most locations, except for irrigated corn in western and north-central Nebraska, northern North Dakota and Minnesota, and the eastern fringe of the region (Indiana, Michigan, and Ohio).

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Forecast yield deviations from normal for rainfed corn across the Corn Belt

2019 Corn Yield Forecasts as of July 31

August 2, 2019
This article summarizes the simulated crop stages and yield forecasts performed on July 31 for 37 locations across the US Corn Belt.

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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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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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Spring N application in the field
Growers planning for their 2019 N management in corn might consider the potential for increased N efficiency and reduced loss from split applications at planting and up to R3 growth stage rather than a fall application.

Consequences of Fall-Applied N

November 9, 2018
A fall nitrogen application has a relatively high loss potential and is considered the riskiest N management practice. Consider breaking tradition and splitting your N applications next year to coincide with when your corn most needs more N.

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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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