MSO and Celcius

Discussion in 'Pesticide & Herbicide Application' started by grassmasterswilson, Sep 7, 2012.

  1. grassmasterswilson

    grassmasterswilson LawnSite Platinum Member
    from nc
    Posts: 4,540

    Read a few threads on the MSO mix and Celcius. Seems there is a wide range of acceptable rates of MSO added.

    What are you guys using and how do you like the results? 1% solution? 1/2%? 1/4%?
     
  2. grassmasterswilson

    grassmasterswilson LawnSite Platinum Member
    from nc
    Posts: 4,540

    Believe the Bayer recommendation is .5-1%. Curious your results at the high end or low end.
    Posted via Mobile Device
     
  3. BikePilot

    BikePilot LawnSite Member
    Posts: 243

    I did a spot spray with MSO at .5% and Celsius max rate using back pack sprayer. It was the standard wand so I know it wasn't as precise as a fixed volume fan nozzle. However, I had a lot of "yellowing" of the bermuda with this mix. Weather; temps 95, high humidity.

    I did this mix on the recommendation of my local JDL guy who said he had been to training and that with 2 apps of Celsius alone spread at 14 to 21 days apart they were killing Dallisgrass. I have an account I do that has a large open area with bermuda and all other weeds including dallisgrass that I can test things on because this area isn't part of my contract and is not seen by others. I am coming up on the 14 to 21 day window and will apply second app first next week so we will see, I don't think its going to happen. I used the MSO but he says it doesn't need to be used with Celsius. From my experience I like to use it but I plan to reduce the amount on the second app and see the how the bermuda reacts.
     
  4. kbrashears

    kbrashears LawnSite Senior Member
    Posts: 761

    Your JDL guy is absolutely wrong on the dallisgrass control. Also wrong on not using mso or a non ionic.

    Bermuda in that heat will yellow for about 10 days then it come right out of it.
     
  5. BikePilot

    BikePilot LawnSite Member
    Posts: 243

    The bermuda recovered easy but I agree I think he is smoking something saying the Celsius alone will control Dallisgrass. I told him I would give it a try and report back. One thing he did say was that it need to be applied during September to get the control.
     

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