Tenacity and trimec tank mix?
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    Tenacity and trimec tank mix?

    Does anybody have experience with Trimec and Tenacity in a tank mix?

    I have read both labels, but they don't specify anything about mixing the two, other than doing a jar test.

    I'm wondering if the two are compatible as a mix, and if the combination can be applied without turf damage. Has anybody tried it?
    Dave

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    IndianaJim's Avatar
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    Might ask your question on Do My Own - Do It Yourself Pest Control, Lawn Care, Gardening, Equipment & Animal Care Products & Supplies.

    Seems like its been asked there, but not answered well.
    The one similar question I found said that it would likely be ok as a spot spray, but not broadcast.
    To me, if you can spray any of it, you should be able to spray it all, but then that would mean youd need to test a small amount to see if the two actually will mix ok with each other.
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    Quote Originally Posted by IndianaJim View Post
    Might ask your question on Do My Own - Do It Yourself Pest Control, Lawn Care, Gardening, Equipment & Animal Care Products & Supplies.

    Seems like its been asked there, but not answered well.
    The one similar question I found said that it would likely be ok as a spot spray, but not broadcast.
    To me, if you can spray any of it, you should be able to spray it all, but then that would mean youd need to test a small amount to see if the two actually will mix ok with each other.
    I looked there, and yes, the answer is a bit vacuous. They sell the stuff, so they probably have to be careful to not say anything that isn't backed up by the label.
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    Dave

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    What are you trying to kill with the tenacity?
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    Quote Originally Posted by rjpoog1989 View Post
    What are you trying to kill with the tenacity?
    Nimblewill and bentgrass.
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    Dave

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    Sometimes herbicides don't play well together

    Quote Originally Posted by IndianaJim View Post
    Might ask your question on Do My Own - Do It Yourself Pest Control, Lawn Care, Gardening, Equipment & Animal Care Products & Supplies.

    Seems like its been asked there, but not answered well.
    The one similar question I found said that it would likely be ok as a spot spray, but not broadcast.
    To me, if you can spray any of it, you should be able to spray it all, but then that would mean youd need to test a small amount to see if the two actually will mix ok with each other.
    Sometimes tank mixes just don't work. The ingredients might cause one or both to separate out or clump up. Sometimes the combo together become more effective and the mfg recommends different application rates of an ingredient than if it's applied alone. Sometimes the ingredients actually counter act each other. If it's not on the label, it's probably for a reason but you can usually email the tech people at the mfg. and get an answer.

    Actually, if it's not on the label and there isn't a subsequent revised label, I think it's illegal to apply most restricted use products off label. I'm not saying it doesn't happen, just that it has some unique issues.

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    Quote Originally Posted by KeyboardJungle View Post
    Nimblewill and bentgrass.
    Bent canít be hard to kill at times. Seems like the tenacity just turns it white and then it comes right back. I donít see any reason why you couldnít tank mix these. Iíve never had issues mixing herbicides. Just donít spray them when itís insanely hot outside.
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    Quote Originally Posted by rjpoog1989 View Post
    Bent canít be hard to kill at times. Seems like the tenacity just turns it white and then it comes right back. I donít see any reason why you couldnít tank mix these. Iíve never had issues mixing herbicides. Just donít spray them when itís insanely hot outside.
    Iíll let you know how it turns out. I will be taking advantage Of the cooler weather that is forecast for the next few days and getting my spraying done.
    Dave

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    I've used that tank mix twice this year and it was fine. The two do not interfere with each other.

    Tenacity needs a surfactant for post-emergent use, which is what you're doing if you're trying to kill bentgrass. Trimec on the other hand should not be used with a surfactant per the label. It could cause the trimec to lose it's selectivity and kill desired grass. It doesn't happen all the time and I think it's somewhat conditional. I used a surfactant and it didn't inadvertently kill my tall fescue lawn. Up to you if you want to take that risk.

    Tenacity is not labeled to kill bentgrass. At best, it may annoy the bentgrass but probably not kill it. Tenacity would probably be an expensive exercise in futility. IDK what would be better since I don't have bentgrass.

    I'll be doing quite a bit of spraying the next few days too since it is no longer 1,000,000 degrees.
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    Quote Originally Posted by Pedals2Paddles View Post
    I've used that tank mix twice this year and it was fine. The two do not interfere with each other.

    Tenacity needs a surfactant for post-emergent use, which is what you're doing if you're trying to kill bentgrass. Trimec on the other hand should not be used with a surfactant per the label. It could cause the trimec to lose it's selectivity and kill desired grass. It doesn't happen all the time and I think it's somewhat conditional. I used a surfactant and it didn't inadvertently kill my tall fescue lawn. Up to you if you want to take that risk.

    Tenacity is not labeled to kill bentgrass. At best, it may annoy the bentgrass but probably not kill it. Tenacity would probably be an expensive exercise in futility. IDK what would be better since I don't have bentgrass.

    I'll be doing quite a bit of spraying the next few days too since it is no longer 1,000,000 degrees.
    Tenacity is definitely labeled for post emergence control of creeping bent. I just looked it up. It was recommended for us to use for that purpose by our regional USGA agronomist. Weíve given up trying to kill it though and these days itís pretty much everywhere itís not supposed to be.
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