Katja Koehler-Cole - Research Assistant Professor in Agronomy and Horticulture

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 article she wrote as a Post-Doctoral Research Associate here.

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.

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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.

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Sunflower and turnip field

Plants for Fallow Summer Periods

September 1, 2021
Many warm-season cover crop species are available and can be used for different purposes in fallow fields, such as improving soil health, breaking up soil compaction, providing forage and supporting beneficial insects.

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Cover crop plantings

Cover Crop Termination Tradeoffs

April 8, 2021
Termination timing of cereal covers can be tricky — while there may not be one "right answer," there are many factors you can consider to make the best decision for your operation. 

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cover crops in a field

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

September 17, 2020
The middle to end of September is a good time to establish cover crops by broadcasting seeds into corn or soybean before harvest. Broadcast interseeding before harvest allows cover crops to capture more sunshine, growing degree days and rainfall than drilling after harvest.

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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?

August 27, 2020
Biomass production, N uptake, and C:N ratio vary widely across the United States. The N in cover crop biomass will be released within a few weeks after termination, however, decomposition varies with soil moisture, soil temperature and C:N ratios.

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single crop and mixed cover crops in field

What Are the Benefits of a Cover Crop Mix Versus a Single Species Cover Crop?

July 6, 2020
The decision whether to mix species or plant a single species as a cover crop depends on your goals, time of the year, and costs.

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Corn Green Cereal Rye
Corn planted into green cereal rye in 2020.

Considerations when Planting Green

April 24, 2020
Growers that switched to planting green, say it was much easier to plant compared with planting into the decomposing-dying cover. In spite of these observations, planting green is not for everyone and one needs to assess the risk of doing so.

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