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Aaron Nygren - Extension Educator

Aaron Nygren

Aaron Nygren

faculty

Exten Educator NE Ext Engagement Zone 8 University of Nebraska–Lincoln

Work

1071 County Rd G Ithaca NE 68033

US

Work 402-624-8005 On campus, dial 7-8005

anygren2@unl.edu

Faculty Bio

He provides local agronomic support for Saunders, Douglas and Sarpy County.

Tractor in field — By incorporating residual nitrate-nitrogen into the nitrogen fertilizer prescription, there is potential to substantially reduce fertilizer cost per acre.

Now is the Time to Use the Nutrients You are Banking in Your Soils

October 20, 2021

With the recent increase in fertilizer prices, it is more important than ever to use the right amount of fertilizer to maximize the economic returns. Applying too little or too much fertilizer can result in substantial economic loss.

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.

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.

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.

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.

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.

Drooping corn ears — Figure 1. Corn showing premature ear droop. (Photos by Aaron Nygren)

Drooping Corn Ears Across Nebraska

August 25, 2023

Across Nebraska, 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?

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?