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CR-2596 Sandbur Control in Bermudagrass Pasture

Bermudagrass (Cynodon dactylon L.) is one of the most common introduced warm-season forages in Oklahoma pastures and serves as the forage base for many livestock enterprises. Its popularity among producers is due to its high forage production potential, drought resistance, grazing tolerance and low pest and disease pressure. However, bermudagrass pastures can be easily infested by weeds if they are not properly managed. Sandbur is one of the most challenging weeds affecting this system due to loss of palatability. Different species of sandbur can invade bermudagrass pastures, including field sandbur (Cenchrus spindex Cav.), longspine sandbur (Cenchrus longispinis Hackel Fern.) and Southern sandbur (Cenchrus echinatus L.). They must be removed or controlled to prevent reductions in forage yield and palatability. Control mechanisms do not differ between species; therefore, it will simply be referred to the species complex as “sandbur.”


Johnsongrass (Sorghum halepense L.) is a warm-season grass. Originally from the Mediterranean region, it was introduced to North America in the 1800s as a forage alternative. The name “Johnsongrass” refers to Colonel William Johnson, who introduced this species to his river-bottom farm in Alabama in the 1840s. Today, Johnsongrass is found in all states except Minnesota, and is considered a noxious weed in 19 states (NRCS, 2016). Johnsongrass is popularly known as “the weed we love to hate and hate to love.”

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