Are you looking for ways to expand your cover crop* seeding window? Here in Wisconsin, the cover crop species options after harvest are rather limited. For instance, this year in Columbia county, planting a cover crop into a field planted in corn for grain on June 1 with a projected harvest date of October 15 results in only one choice with no freeze risk to establishment according to the Midwest Cover Crops Council selector tool- cereal (winter) rye.
Seeding a cover crop into an existing corn crop before harvest is a strategy to extend the number of cover crop species that will establish good stands before frost. Farmers in Indiana have been using modified high-clearance sprayers to seed cover crops before the main crop harvest. Want to learn more? Dan Perkins, an Indiana Extension agent, provides a detailed discussion in his video.
*What is a cover crop? It is a crop planted between main crops that is NOT intended for harvest. For a discussion of the benefits and drawbacks of different cover crop species, consult the Midwest Cover Crops Council website or “Managing Cover Crops Profitably”, for a free pdf copy go here. Also, the Midwest Cover Crops Council in partnership with the Purdue Crop Diagnostic Training and Research Center have produced a handy pocket guide to cover crops. To purchase, visit this site.