Landscape and Turf Maintenance By Dr. Jim Brosnan and Greg Breeden
New N
herbicides for 2012
ew herbicides are continually being intro- duced 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 pre- emergence 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 vaginatum); thus, turfgrass man- agers with seashore paspalum (or bermudagrass turf heavily infested with seashore paspalum) should select an alternative herbicide for preemergence weed control. Research at the University of Tennessee 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 preemer- gence 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 pro- vides postemergence control of non-tillered annual bluegrass as well.
Many of these herbicides will provide new options for weed control in 2012. Always refer to the product label for specific information on proper use, tank-mixing compatibility and turfgrass tolerance.
8 Landscape and Irrigation February 2012 www.landscapeirrigation.com
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