Winning the War On Weeds

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Several products have been introduced over the past few years that promised to control broadleaf weeds. Several of these products have shown promise in fighting weeds in sports turf, although the use of one, Imprells, was suspended in 2011 due to suspected injury to pines, spruces and other ornamental plants. In fact, the number of products registered to control broadleaf weeds in sports turf has doubled since 2000. Before using any herbicides, however, it is important to consult the label to be sure the product is safe for the type of turf it will be used to treat.

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Winning the War On Weeds

  1. 1. Dimethenamid-P Winning the War on Weeds cwsportsturf.com/blog/winning-the-war-on-weeds/ Keith Kitchen Winning the War on Weeds Several products have been introduced over the past f ew years that promised to control broadleaf weeds. Several of these products have shown promise in f ighting weeds in sports turf , although the use of one, Imprells, was suspended in 2011 due to suspected injury to pines, spruces and other ornamental plants. In f act, the number of products registered to control broadleaf weeds in sports turf has doubled since 2000. Bef ore using any herbicides, however, it is important to consult the label to be sure the product is saf e f or the type of turf it will be used to treat. Preemergence Products There are several products available f or preemergence that have been released recently and show promise in treating broadleaf weeds: Dimethenamid-P – This product should only be used on sports turf with warm-season turf grass, although it is labeled f or cool-season turf grass f or golf courses. The explanation f or this labeling is that the product will discolor annual and rough bluegrass on cool- season f ields, but will not control the grass. The product is marketed by BASF under the Tower name. It is particularly ef f ective on goosegrass and has a quick reseeding interval of six weeks. Prodlamine and Quinclorac – Of ten, preemergence herbicide does not control crabgrass ef f iciently. However, Cavalcade PQ, introduced by SipcamAdvan a f ew years ago, works well at controlling crabgrass if it is applied in the leaf stage. Although the product can be used earlier in the season, there is more chance of having adequate control if the product is applied later. In f act, a study at Ohio State University f ound that when the product was applied during May, 85 to 95 percent control was achieved. Pre- and Postemergence Products There are several products that have been released over the past f ew years that perf orm well f or both pre- and postemergence weed protection, with the most promising being topramezone. This
  2. 2. product inhibits carotenoid biosynthesis, a process that causes bleaching of leaf tissue. It is recommended f or use only on centipedegrass, Kentucky bluegrass, perennial ryegrass and a f ew species of f escue. It is only recommended f or spot treatment on sports turf , although there is indication that the company will lif t that recommendation in the near f uture. It provides exceptional control of goosegrass and sedges, and some research indicates that it could also provide postemergence control of crabgrass. The product is sold by BASF under the name Pylex. Postemergence Products For postemergence treatments, several products released over the past f ew years are showing promise in the control of annual bluegrass and ryegrass: Flazasulfuron – This product was originally only labelled f or use on college and prof essional f ootball f ields, but the labeling has changed. Today, the product may be used on sports turf that consists of bermudagrass, zoysiagrass, centipedegrass and seashore paspalum. It is not recommended f or use on carpetgrass or St. Augustine grass. The product works well in removing overseeded cool-season turf grass species, such as annual ryegrass. It is registered f or control of 58 grassy and broadleaf weeds, and although it has shown promise in preemergence, it is primarily used f or post-emergence. The product is marketed as Katana Turf Herbicide and is manuf actured by PBI Gordon. Amicarbazone – This product is designed to control annual bluegrass along with other weeds, even on sports turf . Some research indicates that the product is 90 percent ef f ective in controlling annual bluegrass, whose control can be variable at best. The label recommends two application schedules f or Kentucky bluegrass and perennial ryegrass, but some experts say that a lighter application works best. The product should only be applied at temperatures below 85 degrees Fahrenheit. One of the best aspects of the product is that it can be used on dormant or active warm-season turf grasses. The product is marketed under the name Xonerate f rom Arysta Lif eScience. Although these products show promise in the treatment of broadleaf weeds, it is important to read all labels thoroughly bef ore application to determine if the type of sports turf that will have the product applied is suitable f or the herbicide. As some of these products are still f airly new, there could still be other problems that develop as they increase in use, much like what happened with Imprelis in 2011. Commonwealth Sports Turf has been improving
  3. 3. Imprellis Commonwealth Sports Turf has been improving and maintaining quality sports turf since 2003. If you have questions about products being used on your sports turf , contact Commonwealth Sports Turf today online or by telephone to learn more. Photo Credits: Artif icial Turf Wikipedia: Acetochlor Imprellis Damage by John Kaminski Keith Kitchen Owner at Commonwealth Sports Turf Services Growing up on a working f arm that f eeds your f amily gave Keith an appreciation f or the importance of planning f or growth. It was corn and peanuts then, now it sports turf . Af ter graduating f rom Virginia Tech with a Bachelors of Science in Agricultural Economics and spending 5 years with Southern States, Keith partnered into a new business venture overseeing natural turf maintenance f or Luxury Lawns, a startup maintenance company. Continued growth over 20 years has placed Luxury Lawns, a company Keith now owns, in the top small businesses in the Midlothian area specializing in residential turf management, landscape design and installation, and hardscape applications. Af ter success in the residential turf market, Keith launched Commonwealth Sports Turf and now manages the day to day operations of the business. Latest posts by Keith Kitchen (see all) Winning the War on Weeds - March 28, 2014 Sports Turf Industry Outlook f or 2014 – Mid-Atlantic Region - March 17, 2014 How To Manage Turf When It Wont Stop Snowing - March 3, 2014 Powered by Starbox

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