Fungal issues in St Aug-your thoughts

Discussion in 'Pesticide & Herbicide Application' started by ArTurf, Aug 25, 2014.

  1. ArTurf

    ArTurf LawnSite Gold Member
    Male, from Ark
    Posts: 3,333

    It is nearing large patch season for SA in my area. I've actually seen a lot of grey leaf spot all season due to unusually wet summer and the fact that I have a lot of shady lawns. My understanding is these diseases start with extended leaf wetness of 10 hours or more. I'd like to hear your ideas on minimizing these conditions beyond fungicide applications. One thing I noticed is SA cut lower seems to have less issues with this, maybe due to the area drying out quicker. On fungicides what are your choices?
     
  2. grassmasterswilson

    grassmasterswilson LawnSite Platinum Member
    from nc
    Posts: 4,468

    Hmmm.... If standing water about all you can do is drainage work.

    If leaves are ataying wet from irrigation and heavy dew I always try to cut back limbs/shrubs/etc to increase air flow.
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  3. ArTurf

    ArTurf LawnSite Gold Member
    Male, from Ark
    Posts: 3,333

    Not standing water, just wet from dew or rainfall, not over irrigating. Lots of cloudy days. Yes, cutting limbs to the degree possible but in most cases already done just a heavy canopy with large mature trees.

    At times others have mentioned "out growing" large patch, can anyone explain what they mean?

    Others have mentioned slow release fertilizers may increase the outbreak in some cases, please explain.
     
  4. ETM

    ETM LawnSite Senior Member
    from Georgia
    Posts: 509

    After reading a thread on here about dollar spot I started fertilizing yards with straight urea and ALL issues were solved. Dollar spot gone. Bare spots( sping dead spot) filled in quickly. Etc. slow release fert for us is gonna be a thing of the past for us next yr.
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  5. Spraytek

    Spraytek LawnSite Member
    Posts: 114

    That's because dollar spot is associated with low N fertility. Using urea is giving it a lot more N at once. N is definitely not the cure for Patch diseases in St. Aug.
    I like heritage. It's expensive, but it gives you a good residual compared to most other products...actually any strobilurin works well. Quali-pro just came out with Strobe, which is a generic heritage. Clearys 3336 works pretty well too. I usually rotate between Clearys and Heritage. No problems with patch diseases.
     
  6. grassmasterswilson

    grassmasterswilson LawnSite Platinum Member
    from nc
    Posts: 4,468

    Got the generic heritage today for $285 per pound(heritage was 30). Price is coming down but still high for upselling preventative fungicides.
     
  7. ETM

    ETM LawnSite Senior Member
    from Georgia
    Posts: 509

    Your Right you win the internet lol I was replying to the RONG thought in my lil ol brain sorry.
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  8. ArTurf

    ArTurf LawnSite Gold Member
    Male, from Ark
    Posts: 3,333

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