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Cotton > Year-Round
IPM Program >
Early Squaring
Cotton
Summer Annual Weed Seedlings You May See: Early Squaring
All weeds found during crop emergence plus the
following are seen at this time.
Each name links to more information on identification and biology. See the weed photo gallery for cotton for more
weeds.
Click on photos to enlarge
Bermudagrass collar
Identification tip: Bermudagrass leaves are rolled in the bud and the leaf sheath is flattened. The ligule
is a ring of hairs and there are no auricles. The collar region of bermudagrass has a fringe of short, white hairs
and the sheath
is smooth and green. |
Johnsongrass
Identification tip: Johnsongrass seedling leaves are rolled in the bud. The ligule is membranous and toothed,
without auricles. Leaf blades have a prominent white midrib. The first leaf
blade is 8 times longer than it is wide. |
Cocklebur
Identification tip: True leaves on seedlings are notched on the margins and taper to the tip. Cotyledons
are bright green, shiny on the upper surface, pointed, and about 6 times longer than they are wide. The bur may
remain attached to
the base of the seedling, helping to identify the weed when it is pulled up. |
Velvetleaf
Identification tip: Seedlings of velvetleaf, a summer annual, have one cotyledon that is round and the other may
be slightly heart-shaped. Cotyledons are covered with fine, soft hairs. |
Field bindweed
Identification tip: Seed leaves are nearly square with a shallow notch at the tip. Plants sprouting from rhizomes
lack seed leaves. Early true leaves are spade- or bell-shaped. |
Silverleaf nightshade
Identification tip: Silverleaf nightshade, a deep-rooted perennial, has gray-green seed leaves. First true leaves
have wavy margins and are covered with small star-shaped hairs. |
Puncturevine
Identification tip: Puncturevine seedlings have thick, elongate and brittle seed leaves, which are green
above, grayish underneath, and creased along the prominent midvein. True leaves consist of 8 to 16 leaflets. |
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