I might have goofed...

Discussion in 'Pesticide & Herbicide Application' started by Paulup, Apr 19, 2008.

  1. Paulup

    Paulup LawnSite Senior Member
    Posts: 270

    Ok, so i tried some Scott's Weed and Feed. I have Centipede grass. I applied the Scott's using a Scott's standard spreader, and applied it per the specifications on the bag. This was nearly a month ago. As of 3 days ago, my grass has started to brown in large areas. The browning starts at the tip of the blade and works its way back 1.5 to 2 inches.

    Does it sound like the Weed and Feed is causing it, or could it be something entirely different?

    Also, is there a good fertilizer that I can apply to help strengthen/thicken the grass and get it growing a little faster. Up until a few days ago, I had the best looking grass in the neighborhood, now its starting to lag behind with its recent browning.

    Any advice you guys can give would be great. I don't have an applicator's license, so I'm limited to what i can pick up at my local feed store or Lowe's/HD. Thanks.
     
  2. dancar81

    dancar81 LawnSite Member
    Posts: 6

    Do you irrigate..can you post a pic?
     
  3. Daner

    Daner LawnSite Bronze Member
    Posts: 1,308

    How much did you over lap...Whats the temp...how tall was the grass when you applied the fert. and yes take some pictures...what brand of Scott's did you use
     
  4. Paulup

    Paulup LawnSite Senior Member
    Posts: 270

    Give me about 10 minutes and I'll post all of that.
     
  5. Paulup

    Paulup LawnSite Senior Member
    Posts: 270

    Ok here we go. These first 2 pics are just the yard. You will notice the light browning, and some dark grey. The dark grey is the dead grass from winter(i think) that is kind of stuck there, I need to dethatch it.

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    Here is a close up of the grass so you can see what i'm talking about.

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    And here is a picture of the bag of Scott's Bonus S, Southern Weed and Feed.

    [​IMG]

    I'm in South Louisiana, the grass is Grade A Centipede Sod, planted in 2005. I cut it anywhere from 2.25" to 2.75", depending on how much rain we had recently, and how long its going to be before I cut it again.

    When i spread the Weed and Feed, i set up the sprinklers, but my well couldn't keep up. The next day we got almost an inch of rain, so i didn't bother setting the sprinklers up again as all of the pink granules had disappeared. I did about 12k sq feet of grass with it. I tried my best not to overlap with the feed. There seems to be absolutely no pattern in the browning, as i have it in high and low spots and its not heavier where i made turns with the spreader or would have typically overlapped. Thanks again guys.
     
  6. JDUtah

    JDUtah LawnSite Silver Member
    from UT
    Posts: 2,636

    I'm no expert on centipede, but from the description and pictures, I would say it isn't from your fertilizer, directly. I would bet it is a fungus. Summer or brown patch maybe. Excessive nitrogen fertilizer in hotter months can make your grass more susceptible. Not sure how warm it has been out there? We haven't had much success with fungicides. I think your best bet would be to get it aerated. Also, drought to lots of water can stress your lawn and make it more susceptible to fungus. If you are not watering on a regular schedule, that might help as well. Oh, and I can't tell from the pics, but if you haven't sharpened your blades recently that leaves them more vulnerable as well. Try to sharpen after every 16 hours or so of mowing. Good luck!
     
  7. Paulup

    Paulup LawnSite Senior Member
    Posts: 270

    Blades are 11 hours old, its a brand new machine. I think the hottest its been this season is about 85 degrees. We hadn't had rain in almost 3 weeks when the grass started to turn brown, but finally got a good drenching last night.

    Anyone else have an idea as to why its browning? If its fungus, is there anything i can do besides aeration and consistent watering to help? I live in the sticks, and the well i have can't keep up with constant lawn watering. 2 hoses and 2 sprinklers will leave the water pressure at a trickle and neither will spread water very well.
     
  8. jbturf

    jbturf LawnSite Bronze Member
    Posts: 1,404

    i think you would have seen damage alot sooner- if it were from your application
    i would also suspect a drought/disease problem
    g/l
     
  9. SkyCaptain

    SkyCaptain LawnSite Member
    Posts: 31

    I use the same weed and feed here in florida on my houses on the golf courses. Scott's does take 4 weeks to kick in. I swear by it. So I am going to say it isn't that. I like scott's because of the no-burn mixture. It is hard to goof it.
     
  10. Paulup

    Paulup LawnSite Senior Member
    Posts: 270

    I was around town passing out fliers this afternoon on my 4wheeler and noticed about 30% of the lawns i passed have the same browning pattern on them, so i suspect drought. They all seemed to be high ground with good drainage. Lack of water must be the culprit.
     

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