New Herbicides for 2012

By Brosnan, Jim; Breeden, Greg | Landscape & Irrigation, February 2012 | Go to article overview

New Herbicides for 2012


Brosnan, Jim, Breeden, Greg, Landscape & Irrigation


New herbicides are continually being introduced into the marketplace. Many of these new herbicides may benefit turf managers maintaining cool- and warm-season turfgrass. The following information outlines several herbicides that entered the marketplace in 2011 as well as other materials that will be introduced in 2012.

Specticle (active ingredient is indaziflam) is a new preemergence herbicide from Bayer Environmental Sciences that was originally released for commercial sale in 2011. Specticle is labeled for use on warm-season turf at rates of 2.5 to 5 oz/A. This herbicide is not labeled for use on seashore paspalum (Paspalum uaginatum); thus, turfgrass managers with seashore paspalum (or bermudagrass turf heavily infested with seashore paspalum) should select an alternative herbicide for preemergence weed control.

Research at the Universitv ofTennessee has found that Specticle provides effective preemergence control of crabgrass (Digitaria spp.), annual bluegrass (Poa annua) and goosegrass (Eleusine indica) at lower use rates than traditional preemergence herbicides. Research conducted in 2011 at Tennessee illustrated that Specticle provides postemergence control of non-tillered smooth crabgrass similar to Dimension (active ingredient is dithiopyr). Data also suggest that Specticle provides postemergence control of non-tillered annual bluegrass as well.

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Individuals should use caution when applying Specticle. This herbicide has a longer residual than other preemergencc herbicides, which could be problematic in high-wear areas. There are label restrictions pertaining to not only overseeding but establishing new warm-season turfgrass from stolons/sprigs or sod. Label restrictions also prevent turfgrass managers from overseeding with perennial ryegrass for 8 to 12 months after treatment with Specticle. Furthermore, the product label currently states that turfgrass managers must delay sprigging or sodding for 2 and 4 months after application, respectively (Anonymous, 2010).

Tribute Total is a new postemergence herbicide from Bayer Environmental Sciences that will be introduced for commercial sale in 2012. Tribute Total will be labeled for use in warm-season turfgrass only. Research at the University of Tennessce has found fall applications of Tribute Total to control dallisgrass (Paspalum dilatatum) similar to MSMA. Studies have also shown Tribute Total to be an effective option for yellow nutsedge (Cyperus esculentus) and Virginia buttonweed (Diodia virginiana) control, as well as annual bluegrass and overseeded perennial ryegrass.

Xonerate (active ingredient is amicarbazone) is a new postemergence herbicide from Arysta LifeSciences that will be introduced for commercial sale in 2012. …

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