Bermuda grass is a warm-weather perennial grass that thrives in full sunlight. Often when the fields are first established by seeding or sprigging, some types of weeds may encroach upon the fast-growing grass. A strong stand of Bermuda grass that is properly fertilized and irrigated is the best way to control weeds. When weeds begin to overtake the grass field, an herbicidal application may be the best way to kill the weeds.
Examine the field throughout the growing season. Identify the type of weeds that require control. Weeds such as nutsedge and crabgrass will need specific herbicides. If you are unsure of the weed species, take samples to your local agricultural extension service for identification.
Mix the specific herbicide for the weed infestation according to the package labeling. Different weeds will require various strengths of the chemical. Nutsedge and crabgrass will require the application of monosodium methanearsonate every 10 to 14 days. Broadleaf weeds may be affected by a single application of dicamba or 2,4-D.
Treat only the weed-affected areas with the weed killer. Keep the nozzle tip close to the ground. Over spray from the herbicide will damage other plants.
Inspect the Bermuda field on weekly for new weed growth and to check the effectiveness of the herbicide.
Treat areas again if weeds reappear.