![]() Augustinegrass at temperatures above 90 ☏ may cause temporary growth regulation.Ī three-way herbicide may be used on bermudagrass, zoysiagrass, centipedegrass, St. Note: Do not apply post-emergence herbicides, except Celsius WG Herbicide, to lawns during the spring green-up of turfgrass.ġ This mix of active ingredients requires the addition of 2 teaspoons of a non-ionic surfactant (that is, a wetter-sticker agent to aid in weed control, and added at 0.25% by volume) per gallon of water, such as Hi-Yield Spreader Sticker, Southern Ag Surfactant for Herbicides, or Bonide Turbo Spreader Sticker.Ģ Spot treatments to St. However, during the warmer winter weather of recent years, bermudagrass lawns have not gone fully dormant in South Carolina. NR= Not registered for use on and or damages this turfgrassĭ=Fully dormant turf only. I= Intermediate safety, use at reduced rates Turf Tolerance to Post-emergence Herbicides for Lawn Burweed Control. The only solution to this is early identification and control. Dead or alive, lawn burweed poses a painful problem. ![]() Once the weed has reached a more mature state, multiple herbicide applications may be necessary, which increases the potential for turfgrass injury. Because lawn burweed is a winter annual, it will begin to die in late spring as air temperatures reach 90 ☏. Control is not impossible in March, April, and May, but the spines have already formed by this time and will remain after the weed dies. The weed is smaller and easier to control during this time of year and has not yet developed the spine-tipped burs. Post-emergence Control: The key factor to effectively controlling lawn burweed is to apply a post-emergence herbicide during the winter months of December, January, and February. For more information on growing healthy turfgrass, see HGIC 1201, Fertilizing Lawns HGIC 1205, Mowing Lawns and HGIC 1207, Watering Lawns. Healthy lawn grasses can outcompete burweed for light, water, and nutrients and reduce the level of infestation. Maintain a healthy, dense lawn by fertilizing and liming according to soil test results and mowing at the proper height and frequency for the specific turfgrass in the lawn. DiTomaso, University of California – Davis, Lawn burweed ( Soliva sessilis) leaves and fruiting head. The most prominent identifying characteristic of lawn burweed is its spine-tipped burs, often hard to see but easily felt. It attains an overall diameter of 6 inches and a height of 3 to 4 inches. It has small (¼ inch or less in width), inconspicuous flowers in the spring. Leaves are approximately ½- to 1½-inches long and ¼- to ½-inch wide. It has opposite, sparsely hairy leaves that are twice divided into narrow segments or lobes. Lawn burweed is a low-growing, freely branched winter annual. The seed is contained within the hooked bur. However, as temperatures warm in the early spring, lawn burweed initiates a period of rapid growth and begins to form spine-tipped burs in the leaf axils. It remains small and inconspicuous during the cold winter months. Lawn burweed ( Soliva sessilis) is a winter annual that germinates throughout thin turf in the fall months as temperatures cool. Other names for this weed are spurweed and stickerweed. ![]() This pleasant experience can often turn into a painful, sticky situation with the presence of lawn burweed. Nothing designates spring’s arrival like walking barefoot on a lawn of lush, green grass.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |