Terminating cover crops

Some cover crops will winterkill while others will require some type of spring management to terminate them before planting a cash crop in the spring.

For overwintering cover crops sown after winter wheat, some may prefer to terminate in the fall to simplify their spring planting schedule.

This table lists the various cover crops and how they can be effectively terminated.

Cover Crop Winterkill Crimping Mowing Tillage Herbicide
Brassicas Canola/Radish Maybe No No  Yes Glyphosate
Legumes Red Clover No No No Maybe Glyphosate and Dicamba or 2,4-D
Crimson Clover Yes No No  Yes Glyphosate and Dicamba or 2,4-D
Berseem Clover Yes No No Yes Glyphosate and Dicamba or 2,4-D
Field pea  Maybe No Yes Yes  Glyphosate and Dicamba or 2,4-D
Sweet clover  Maybe No No Maybe  Glyphosate and Dicamba or 2,4-D
Hairy Vetch  No Yes No Yes  Glyphosate and Dicamba or 2,4-D
Non-Legume Annual Ryegrass  Maybe No No Yes  Glyphosate 4.5 lb. ae per gallon, 16-32 fl. oz/ acre
Winter barley  No Yes Yes Yes  Glyphosate 4.5 lb. ae per gallon, 22 fl. oz/ acre
Winter rye  No Yes Yes Yes  Glyphosate 4.5 lb. ae per gallon, 22 fl. oz/ acre
Winter wheat  No Yes Yes Yes  Glyphosate 4.5 lb. ae per gallon, 22 fl. oz/ acre
Oats/Spring Barley  Yes  Yes Yes Yes  Glyphosate 4.5 lb. ae per gallon, 22 fl. oz/ acre

For more information, check out  Cover Crop Termination fact sheet

For a full article addressing this topic, read Wisconsin Crop Manager newsletter.

For more information on annual ryegrass and winter rye, read Termination of Winter Rye and Annual Ryegrass using Glyphosate.

 

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