Page: « First ‹ Previous Next › Last »
Practical Weed Science for the Field Scout: Corn and Soybeans
Quackgrass (Elymus repens)
Perennial grass
A perennial grass from rhizomes that may reach 3-1/2 feet in height. Quackgrass is a common weed of agronomic crops, turfgrass, lawns, nurseries and landscapes. Leaves are rolled in the bud and are 1-1/2 to 12 inches long and usually 2 to 3 mm wide but may reach 12 mm in width. Leaves may or may not have hairs on the upper surfaces, but lower leaf surfaces are without hairs. Leaves have membranous ligules that are less than 1 mm long and also have narrow auricles that clasp the sheath. Seedheads are long, narrow spikes consisting of many individual spikelets arranged in two rows along the stem. Spikes range from 2 to 8 inches in length.
IPM1007, revised June 2007
Page: « First ‹ Previous Next › Last »