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IPM1007, Practical Weed Science for the Field Scout: Corn and Soybean

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Practical Weed Science for the Field Scout: Corn and Soybean

Signalgrass, broadleaf (Brachiaria platyphylla)

Summer annual grass

Broadleaf signalgrassA spreading summer annual that is commonly found growing along the ground but with tips ascending (decumbent growth habit). Leaf blades are overall short and wide in appearance, approximately 1-1/2 to 6 inches long and 6 to 15 mm wide. Leaves are rolled in the bud and without hairs on either leaf surface except on margins and in the collar region. The ligule is a narrow membrane fringed with hairs, 1/2 to 1 mm long (unlike large or smooth crabgrass). Leaf sheaths are hairy and stems can root at the nodes. The seedhead is a raceme with 2 to 6 "branches," approximately 1 to 3-1/2 inches long.
 

Broadleaf signalgrass
Broadleaf signalgrass
Broadleaf signalgrass 
 

 

Wild thing
 

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