Old 03-20-2013, 03:32 PM
Wes Parker Wes Parker is offline
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SPEEDZONE & Atrazine Mix

Because I have both of these on hand would a mix of Speedzone Southern for broadleafs and Atrazine for Poa annua on Centipede be a good mix this time of the year? Never mixed the two before. Hoping someone else has.
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Old 03-21-2013, 11:17 PM
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richardcog richardcog is offline
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SPEEDZONE & Atrazine Mix

Sure works great
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Old 03-22-2013, 08:19 AM
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wildstarblazer wildstarblazer is online now
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I am not concerned so much about the mix but the timing. I don't have experience with speedzone(yet) but not sure if applying now during spring transition might injure or delay green up of the turf. Hopefully someone who knows will chime in..
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Old 03-22-2013, 12:19 PM
Wes Parker Wes Parker is offline
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I contacted NC State yesterday and was told there would be no effects from Atrazine. Said there might be a little yellowing or delayed green up but if applied in the correct amounts its shouldn't have any adverse effects.
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Old 03-22-2013, 10:14 PM
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ed2hess ed2hess is offline
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I use speedzone in backpacks in bermuda this time of year and don't think it wll be a problem. I did hurt bermuda by using speedzone during the summer can't do that at all. I don't know what poa is but speedzone pretty well knock out all broadleaf we see in our area. I use it instead of roundup, which don't work in cool temp despite what the say.
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Old 03-24-2013, 04:04 PM
precision8m precision8m is offline
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I can't remember since I haven't used it in a while, but what grass types are safe to use atrazine on for poa control? I live in an area with fescue, Bermuda, zoysia, centipede, and st augustine.
Walker, Toro, Stihl
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Old 03-24-2013, 07:02 PM
RAlmaroad RAlmaroad is offline
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Atrazine will damage/kill fescue. And it moves laterally.
We all are merely gleaners from the masters who were here before us.
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Old 03-24-2013, 07:59 PM
grassmasterswilson grassmasterswilson is online now
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Been using a 3-way and atrazine mix both at a quart per acre along with pint per acre of 80/20

It's been working great but the atrazine has been slow to work. May need to up my rate. Temps have been pretty consistent in the 50s/30s with a few warm days in 60s and nights in 20s.
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Wilson, NC
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Old 04-05-2013, 03:23 PM
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wegomow wegomow is offline
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This time of year Poa will be dying out soon anyway. Applying Atrazine wouldn't help much. As a post emergence herbicide, it's best applied in November and a second app in Jan from what I understand.
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