New Herbicides for 2011

New herbicide Indaziflam is the active ingredient in Specticle herbicide. It's labeled for use on warm-season turf at rates of 2.5 to 5 oz./acre. Photo Courtesy of Bayer Environmental Sciences.

This update covers herbicides that have been labeled recently enough that they were mostly not in use during the 2010 season. Some of the new herbicides that will be available in 2011 are outlined below.

Specticle (active ingredient- indaziflam) is a new preemergence herbicide from Bayer Environmental Science labeled for use on warm-season turf at rates of 2.5 to 5 oz/acre.

SquareOne (active ingredients- carfentrazone + quinclorac) is a new postemergence herbicide mixture from FMC labeled for control of certain grassy and broadleaf weeds in warm- and cool-season turfgrass as soon as 7 to 14 days after seeding.

Celsius

Celsius (active ingredients- thiencarbazone + iodosulfuron + dicamba) is a new postemergence herbicide mixture from Bayer labeled for use on select warm-season turfgrasses at rates of 2.5 to 4.9 oz/A; however, turfgrass managers cannot exceed 7.4 oz/A in a single year.

Celsius is not labeled for use on seashore paspalum (Paspalum vaginatum); thus, turfgrass managers with seashore paspalum athletic fields (or bermudagrass fields heavily infested with seashore paspalum) should select an alternative herbicide for broadleaf weed control.

Blindside

Blindside (active ingredients- sulfentrazone + metsulfuron) is a postemergence herbicide mixture FMC labeled for broadleaf weed control on certain cool- and warm-season turfgrasses at rates of 3.25 to 10 oz/A. Avoid applying Blindside to any cool-season turfgrasses under stress, as temporary injury can occur after application.

- Courtesy of Landscape and Irrigation; Ohio State University Extension