Aaron Nygren - Extension Educator

Aaron Nygren

faculty
Work
PO Box 389 466 Rd 10 Schuyler NE 68661-0389
US

Faculty Bio

Nygren provides Extension agronomic support for Colfax, Cuming, and Stanton counties.
Twitter: @ColfaxCountyExt

Soybean pods
Figure 1. Soybean pods collected from stage R7 plants (one mature pod per plant) that were opened to determine if the pod wall interior membrane was still clinging tightly to the seeds (leftmost pod), or if it was beginning to detach from the seeds (second pod), or if the membrane was now permanently attached to the pod wall (third pod). After attaining physiological maturity, seeds undergo a dry-down period from about 60% moisture to about 13% moisture. Note that the Rx.x numbers used here are pod-based stages, not plant-based stages.

Understanding Ending Reproductive Stages in Soybean

August 27, 2021
The timing of the ending R stages in soybean is governed by planting date (PD) and varietal maturity group (MG), though the date of R7 can be hastened if water stress and high temperatures prevail in August — something we are seeing in portions of Nebraska this year.

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Pivot irrigation

Scheduling the Last Few Irrigations of the Season Deserves More of Your Management Time Than Earlier Irrigations

August 19, 2021
University of Nebraska irrigation scheduling recommendations encourage irrigators to allow crops to continue using more of the stored soil water starting in August and continuing into September when the crop matures.

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ET gage
ETgage installed near soybean field.

ET Resources

June 24, 2021
Online resources for viewing evapotranspiration (ET) information and changes, which can be used alongside your crop's stage of growth to estimate crop water use.

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Nebraska sample field map

What Have We Learned about Soybean Seed Constituents in Irrigated and Dryland Producer Fields in Nebraska?

June 14, 2021
With a continuous decline in seed protein concentration in U.S. soybeans, UNL researchers examined how irrigation practices in Nebraska may contribute to this issue for soybean growers.

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Soybean emergence

Q/A: Questions about Soybean Emergence and Stands

May 27, 2021
There are many factors for producers with soybean emergence and stand issues to consider; this article reviews potential causes, identification techniques and management options.

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drooping corn ear

Drooping Corn Ears Across Nebraska

September 3, 2020
Across Nebraska, our crops continue to mature as we rapidly move towards harvest 2020, however, when scouting you may start to see more ears that have prematurely drooped. What is causing this phenomenon in our corn? And what does this mean for yield in those fields affected?

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center pivot irrigating late season corn

Scheduling the Last Irrigation of the Season

August 26, 2020
Usually by mid to late August, corn and soybeans have progressed enough in maturity that we have a good handle on how much water it will take to finish the crop out. So just how much water do we need to finish out the growing season?

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flowers forming on soybean

Extension Crop and Pest Reports (June 22-26)

June 22, 2020
Extension educators report on what they are seeing in the fields this week in the northern panhandle, Saline, Jefferson, Gage, Colfax, Dawson Buffalo and Hall counties.

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