Keith Glewen - Extension Educator

Keith Glewen

1071 County Rd G Ithaca NE 68033-2234
Work 402-624-8030 On-campus 7-8030

icon-documentPublications and Other Intellectual Contributions

  • 2017 Soybean Management Field Days Research Update, Soybean Management Field Days Research Update - 2017, December 2017

Faculty Bio

Yield probabilities for irrigated corn, July 13, 2016.
Yield probabilities for irrigated corn, July 13, 2016.

2016 Corn Yield Forecasts as of July 13 July 14, 2016

Based on modeling corn growth stage and end-of-season yield for 41 sites in 10 Corn Belt states, researchers are forecasting potential end-of-season yield in "real time" to aid in decision-making thoughout the season. On July 14 they reported that corn has already reached or is approaching silking throughout most of Nebraska and the Corn Belt, except for corn in the northern and eastern states, where growth is running behind the rest of the region.based on modeling end-of-season corn yield for 41 sites. There is a low (<20%) probability of below-average yields at all irrigated locations, except for two sites in southeastern Nebraska. The range of forecast yields at the rainfed sites is wider. There is a relatively high probability (>75%) of above-average yield at two locations in the northern states and below-average yield at three locations. See story for predicted yields and probabilities for all the sites.

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Map of sites for corn yield forecasts for 2016
Map of sites for corn yield forecasts for 2016

2016 Corn Yield Forecasts: Approach and Interpretation of Results June 30, 2016

The Yield Forecasting Center will be providing in-season corn yield forecasts every two weeks starting in mid-July to aid growers and the ag industry in making management, logistics, and marketing decisions through the season. The Center consists of a core team at UNL in collaboration with agronomists and extension educators from universities throughout the Corn Belt.

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10 Steps for On-Farm Research Success April 21, 2016

Interested in testing a practice or product under your field conditions and available equipment? Here are 10 steps to help ensure your results are reliable and meaningful to your operation.

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Soybean Seeding Rate Tips April 20, 2016

Numerous soybean seeding rate studies have indicated that a final plant population of about 80,000 to 120,000 plants per acre is likely sufficient for ensuring an economic return, with the latter being based on weighing the slightly higher yield potential with higher final pl

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Photos of canopy closure based on various planting dates
Figure 3. Canopy cover in early July for each planting date in a 2015 Nebraska study. Authors note that fields that have closed canopy and are "green to the eye by the 4th of July" make the best use of sunlight to generate top yields.PD = planting date.

Early Bird Gets the Worm: Benefits of Early Soybean Planting April 20, 2016

A 4-Step Early Bird Guide to Higher Soybean Yield Potential:

  • Select full-season varieties with proven yield performance.
  • Know your replant coverage with seed suppliers and insurance.
  • Shoot for soil temperatures above 50°F during the 48 hours after planting.

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Thermometer taking temperature of residue-covered soil
Taking the soil temperature

Three Key Considerations for Planting Corn and Soybeans April 15, 2016

Planting as early as possible allows your crop to collect solar radiation sooner; however, the practice comes with some risks which need to be weighed against the benefit.

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Downed corn leading to harvest complications in 2012

Assessing and Harvesting Downed Corn October 26, 2012

Also see Robert Klein's photo essay on an operation's effort to harvest downed corn and a related segment on YouTube from the November 2 Market Journal story with Rick Rasby.

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