Turf Tip - August 27, 2009

New weed in Arkansas: Doveweed

Doveweed (Murdannia nudiflora) is a summer annual with fleshy, creeping stems. It has parallel veins and a somewhat grass-like appearance. The leaves are alternate, narrow and lance-shaped. The leaf sheaths have short hairs on the upper margins. The flowers are blue to purple and appear in an open cluster. Doveweed flowers throughout the summer. The stems root at the nodes. This weed spreads by seed and vegetatively through stem fragments. It is found in turf areas and in moist woods Doveweed is in the Commelinaceae family which is one of those in between groups of plants that are not grasses, broadleaves or sedges. The closest relatives of doveweed that are common in Arkansas are dayflower (Commelina communis) and spreading dayflower (Commelina diffusa).

Doveweed and dayflower images

 

Chemical Control

Two applications of atrazine or simazine, foramsulfuron (Revovler) or metsulfuron (Manor or Blade) applied 30 days apart have provided fair to good control of doveweed. Sencor + MSMA are an effective for control in bermudagrass turf. Tank mixing three-ways (2,4-D + MCPP + dicamba) with carfentrazone (Quicksilver), or sulfentrazone (Dismiss) improves control of doveweed. Repeat applications of all herbicides or combinations will be needed for complete control.

John Boyd and Aaron Patton

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