Katja Koehler-Cole - Extension Educator

Katja Koehler-Cole

faculty
Work
1071 County Road G Ithaca NE 68073
US
Work 402-624-8041 On campus, dial 7-8041

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.

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.

Read more

Highboy interseeder

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.

Read more

Rye in continuous corn
Rye in continuous corn April 19, 2018 at the Eastern Nebraska Research and Education Center near Mead.

How Much Nitrogen Does My Cover Crop Take Up and When Do I Get It Back?

September 9, 2022
An evaluation on the range of biomass production of cover crops, the amount of nitrogen in their biomass, and their C:N ratio to help inform nutrient changes following cover crops. 

Read more

Cover crop mix drill interseeded
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.

Read more

cover crops in a field

Seeding Rates for Broadcasting Cover Crops Into Late-season Corn and Soybean

August 31, 2022
The middle to end of September is a good time to establish cover crops by broadcasting seeds into corn or soybean before harvest, which allows the crop to capture more sunshine, growing degree days and rainfall.

Read more

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.

Read more

Soil seedbank trays

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.

Read more

Tillering rye plant illustration

Illustrating Important Growth Stages for Winter Cereal Cover Crops

December 2, 2021
Knowledge about plant growth stages is important for management decisions and to predict how well a plant may cope with stress, such as low temperature.

Read more