From Great Lakes Wiki
Barnyard grass is a major concern for farmers because it can considerably reduce rice and corn yields. This invasive plant serves as an alternative host for pests that feed on corn. The best way to control Barnyard grass is plant crops closer, and to remove weeds before they flower. A single Barnyard grass plant can produce 40,000 seeds, so it is imperative that farmers keep a close vigil on their crops.
Image site: biology.missouristate.edu/Herbarium/Plants%20
