IPM1007, Revised November 2009
Summer annual grass
An annual that closely resembles johnsongrass and grain sorghum in growth habit and appearance. Leaves are usually without hairs, 12 to 24 inches long, 1 to 2 inches wide, and have a prominent midvein. The ligule is membranous at the base and a fringe of hairs at the top, reaching 5 mm in length. Sheaths are robust and usually hairless, but some hairs can occur in the collar region. Plants can produce tillers and adventitious roots, as in grain sorghum. The seedhead is a large, open panicle much like that of johnsongrass but with individual seeds that are much larger and more robust than those of johnsongrass.
IPM1007, revised November 2009
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