Tough, cold Wisconsin winters translate into fewer cover crop species requiring spring termination before planting. For a quick chart of cover crop species that tend to winterkill, download the Cover Crop Termination fact sheet . Here is a short list of the cover crops that will need to be terminated in the spring: winter (cereal) rye, winter barley, winter wheat, winter triticale, red clover, sweet clover, and hairy vetch. There are a few cover crops that may or may not winterkill depending on the severity of winter and degree of snow cover; these include canola, winter pea, and annual ryegrass. If cereal rye will be harvested for forage, then consult the Herbicide Rotational Restrictions fact sheet . For overwintering cover crops sown after winter wheat, some may prefer to terminate in the fall to simplify their spring planting schedule.
For the full article, read Wisconsin Crop Manager newsletter.