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BARNYARDGRASS
 Barnyardgrass
[Echinochloa crus-galli (L.) Beauv.]
DESCRIPTION
Barnyardgrass
is an upright summer annual weed of turfgrass. It is found in moist, disturbed
sites, marshes, and wet turf areas. Barnyardgrass can most easily be
distinguished from other grasses by its seedhead, and the fact that it has no
ligule.
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Characteristic
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Description
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Seedhead / Flower
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panicle; seedhead often purple, spikelets end in a bristle
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Vernation Type
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leaves rolled in the bud
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Ligule Type
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absent
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Growth Season / Life Cycle
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summer annual weed
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Auricle Type
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absent
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Leaf Blade Tip Shape
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sharp-pointed; edges rough, blades all in same plane
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Leaf Blade Width
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0.4 - 0.8 inches (10 - 20 mm) wide
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Stolon Presence
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absent
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Rhizome Presence
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absent
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Collar Type
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continuous; may have hair on collar, white band on collar
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Sheath Margin
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split with overlapping margins
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Sheath Type
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flattened; sheath occasionally has short hairs; red- to
purple-tinged at base
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barnyardgrass
ligule, auricles, sheath margins
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barnyardgrass
collar
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Note: Still not
sure this is the right weed? The Turf
& Weed Identification Decision Aid may help. Check the TurfFiles glossary for definitions
of unfamiliar terms.
CULTURAL
CONTROL
These
grasses occur infrequently in North Carolina in highly maintained turf but can
be common in utility turf, such as along roadsides. Maintaining a dense,
healthy turf year round by proper mowing and fertilization helps prevent
encroachment and weed establishment.
CHEMICAL
CONTROL
Barnyardgrass can be controlled
with preemergence and postemergence crabgrass herbicides.
© North Carolina State University. This information sheet was prepared
by Fred Yelverton, Bridget R. Lassiter, Gail G. Wilkerson, Leon Warren, Travis Gannon, Jenifer J. Reynolds, and Gregory S. Buol. Department of Crop
Science, College of Agriculture & Life Sciences, North Carolina State
University. Prepared July 15, 2008. Available on-line at
www.turffiles.ncsu.edu. This publication was made possible through a grant
provided by the Center for Turfgrass Environmental Research & Education
(CENTERE) whose purpose is to support worthwhile projects that will benefit
both the private sector and the public, and protect the environment.
KEYWORDS FOUND IN THIS ARTICLE:
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