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

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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Cover crop research plots in 2017

Spring-planted Cover Crops for Weed Control in Organic Soybean

March 25, 2020
Weed control in organic soybean usually includes frequent pre-plant tillage operations but spring rains often make it difficult to get into the fields for timely tillage. As a result, weed pressure can be high. Cover crops can help suppress weeds, but after corn harvest it is often too late to establish cover crops. Spring-planting cover crops may be an alternative to fall-planting.

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red clover sown in wheat field

Undersowing Red Clover Into Winter Wheat as an N Source for Corn

March 11, 2020
Red clover can be an excellent green manure that fixes nitrogen, suppresses weeds, and increases corn yields. As a slow-growing cool-season legume, it is suitable to undersowing into winter small grains in early spring.

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Cover image of NebGuide G2314

New Introductory Cover Crop Guides Cater to Nebraska

November 8, 2019
Two new guides from the Midwest Cover Crops Council and Nebraska Extension offer key "how to" information for growers interested in integrating cover crops into their traditional corn-soybean rotation.

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This a cereal rye cover crop at the threshold (1,000 lb/ac) biomass level. It is about 6-8 inches tall (April 13, 2017 at the south-central Nebraska site).
Figure 1. This cereal rye cover crop is at the threshold (1,000 lb/ac) biomass level. It is about 6-8 inches tall (April 13, 2017 at the south-central Nebraska site).

Optimum Planting Times to Establish Cover Crops Following Corn

September 16, 2019
Results from a UNL study assessing biomass production of two cover crops (cereal rye alone or a cereal rye mix) planted either pre-corn harvest or post-corn harvest at three sites in eastern Nebraska.

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Andrea Basche in a field of cover crop planted into corn stubble

Cover Crop Research Team Receives Nebraska Environmental Trust Grant

June 3, 2019
Three agronomy faculty have been awarded a grant to develop a decision-support tool for the successful incorporation of cover crops into Nebraska cropping systems.

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Figure 1. Corn height and stalk diameter for the different treatments were measured weekly and compared.

Effect of Rye or Oat Cover Crop on Corn Growth and Development in a Rain-Fed, Wheat-Corn Rotation

March 12, 2019
Cover crop species and planting date are two factors that could affect the following crop. In this student study the effects on corn of cover crop species and planting dates were evaluated.

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