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Old 05-15-2008, 06:48 PM
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RobHawkins RobHawkins is offline
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Triazine or Sulfonylurea family of herbicides?

I'm still looking for a way to kill the Orchardgrass in my Tall Fescue.
NCSU Turf Files is a great source of information for lawn and turf in North Carolina.
However, there is little information there for controlling this weed.
Here is what I found...

Quote:
CULTURAL PRACTICES
Perennial grass weeds are not desirable as turfgrass species under any conditions. Therefore, every effort should be made to prevent these weedy grasses from becoming established in turf, as selective control measures are usually difficult. Selection of adapted turfgrass species and cultivars and the use of cultural practices are important in minimizing weedy grass encroachment and competition. Management practices include (1) mowing at the recommended height for the selected turfgrass and removing clippings when seedheads of grassy weeds are present; (2) applying the proper amount of nitrogen at the correct time according to the turfgrass present; and (3) using soil tests to determine needed nutrients and lime.

HERBICIDE INFORMATION
Warm season turfgrass herbicides in the triazine or sulfonylurea families will provide control of orchardgrass.

TREATMENTS
NO RESULTS: The above selection did not match any Treatment results in the database.
...Can anyone give me a "brand name" for the Triazine or Sulfonylurea family of herbicides?
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Old 05-15-2008, 09:19 PM
PSUTURFGEEK PSUTURFGEEK is offline
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Velpar is one pretty common brand name for this class.
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Old 05-15-2008, 10:43 PM
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RobHawkins RobHawkins is offline
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Velpar looks like some nasty stuff. And, it looks like it stays around for a long time. But it does say it kills Orchardgrass although some damage will occur to Tall Fescue.
Thank you for that info.
Anyone else have anything to add?
What about MSMA?
Rob
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Old 05-15-2008, 10:53 PM
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RobHawkins RobHawkins is offline
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Anyone familiar with these herbicides?
Quote:
Sulfonylureas are a family of environmentally compatible herbicides that were discovered by DuPont in 1975.
DuPont™ Escort®, Landmark®, Oust® and Telar® brand herbicides.
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Old 05-16-2008, 12:06 AM
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ted putnam ted putnam is offline
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Quote:
Originally Posted by RobHawkins View Post
Anyone familiar with these herbicides?
Atrazine and simazine are of the triazine family. Escort(Metsulfuron) is the same as Manor, Mansion,MSM, Blade. Sulfonylureas are Metsulfuron, Halosulfuron (Manage, Sedgehammer), Sulfosulfuron (Certainty) and others I'm sure. You'd just have to check labels. good luck
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Old 05-16-2008, 08:06 AM
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Thank you Ted.
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Old 05-16-2008, 08:28 AM
n-green n-green is online now
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I'm with you Rob. I started a thread last year. After the 2006 season a few of my lawns I seeded with Transition Blend (including mine) had Orchardgrass. I seeded about 100 others with the same stuff with no problems. No selective herbi is labeled to kill it. Va Tech tested a new product, Mesotrione which will be labeled to suppress Orchardgrass in cool season turf. Good luck and use only certified seed.
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Old 05-16-2008, 10:35 AM
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Harley-D Harley-D is offline
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n-green,
"will be labeled?" Is it registered? Where can you get it?
Tons of problems with orchard here in c.va.
Heard that none of the sedge controlers work. manage, sedgehammer
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Old 05-16-2008, 01:02 PM
n-green n-green is online now
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Harley,
Tenacity by Syngenta was tested at VA Tech and they found that it suppressed (not controlled) Bermuda,Quack, and Orchard in cool season turf. When they wrote the article in March/ April the label was not available yet. I just got excited when I saw mention of Orchard Grass because it has given me such a headache. If you find something that works, please let us know.
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Old 05-16-2008, 06:38 PM
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RobHawkins RobHawkins is offline
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n-green,
Can you post a link to that article from VA Tech? I'd like to read it.
Thank you for the help.
Orchardgrass must DIE! Tall Fescue must THRIVE!!!
Rob
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