Lower nutrient availability means less available for weed growth as well as for crop growth. Higher nutrient levels stimulate the competitive ability of wild oats, green foxtail and barnyard grass.

Barnyard grass is a vigorous, warm season annual grass reaching 1 to 5 feet in height with ... Calyx is scarcely enlarging, not cupping the fruit. It is a native of Europe, is a weed of waste places ...