Katja Koehler-Cole

faculty

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

Work

1071 County Road G Ithaca NE 68073

Work 402-624-8041 On campus, dial 7-8041

kkoehlercole2@unl.edu

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Dr. Koehler-Cole was promoted to assistant research professor in the Department of Agronomy and Horticulture Dec. 1, 2018. You can find the articles she wrote as a Post-Doctoral Research Associate here.

Interseeding video intro — It’s important to plan ahead of time and know your goals when adding cover crops to your operation. In this article, Nebraska Extension evaluates numerous cover crop species and provides guidance on how to choose the species that will best fit your production needs. This video shares additional information on cover crop species used.

Interseeding Cover Crops into Early Season Corn and Soybean: Species Selection

April 27, 2023

In this article, Nebraska Extension evaluates numerous cover crop species for interseeding and provides guidance on how to choose the species that will best fit your production needs.

On-Farm Research Early-season Interseeding into Corn and Soybean Results (2019-2022)

April 13, 2023

The final results of a three-year study on interseeding cover crops in early-season corn and soybean include observations on yield, soil quality and net return.

Evaluation of Diverse Cover Crops Across Nebraska: Findings from Spring-planted Cover Crops in 2022

February 23, 2023

Results from 2022 variety trial research conducted on numerous cover crop species at five UNL research stations across Nebraska.

Cover crop in field — Cover crop mix (cereal rye and brassicas) in a field on Oct. 12. Last year’s cereal rye residue is still visible.

Broadcast Interseeding with a Highboy — What We Learned in Year One

December 16, 2022

First-year results of a study to assess cover crop establishment using broadcast late-season interseeding in rainfed and irrigated fields.

Highboy Cover Crop Interseeding Project

October 6, 2022

Interested producers are encouraged to participate in this new UNL project, wherein researchers are interseeding cover crops into late-season corn to provide additional growth time before winter dormancy.

Cover crop mix drill interseeded into V4 corn growing well by V8-9 leaf corn. (Photo by Jenny Rees)

Comparing Cover Crop Planting Methods

September 1, 2022

While planting cover crops after harvest with a drill or planter may be the most convenient, there are several other planting methods that can increase cover crop success as measured by biomass production.

Cereal rye cover crop — Producers can now estimate the biomass, water use and nitrogen uptake of cereal rye — one of the most common cover crop species in the U.S. — using the new Cover Crop Biomass Calculator. (CropWatch file photo)

Cover Crop Biomass Calculator Available for Nebraska

July 7, 2022

This new tool estimates cover crop growth with different planting and termination times across the state of Nebraska, to help producers maximize cover crop growth between fall harvest and spring planting.

Expanding the Integrated Weed Management Toolbox: Winter Cover Crop Impacts on Weed Dynamics in Eastern and Central Nebraska

April 4, 2022

Results of a 2021 UNL study to determine cover crop impacts on weed suppression through analysis of the soil seedbank.