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Turf fertilizer: Liquid or granular?

Discussion in 'Fertilizer Application' started by Happy Frog, Mar 31, 2009.

  1. Happy Frog

    Happy Frog LawnSite Bronze Member
    Posts: 1,224

    What is best for spraying at 50 gal. / Acre?

    Lesco has a 12-0-0 Chelated iron plus concentrate but recommends to spray it diluted in 150 to 200 gal. per acre.

    Has anyone used it in a more concentrated solution (like 60 Gal. / acre)?

    What other fert (cheaper) can I use in 50 to 60 gal. / acre dilution?
  2. ted putnam

    ted putnam LawnSite Platinum Member
    Posts: 4,539

    You won't get much longevity out of the 12-0-0. I wouldn't really even use it as a main source of fert as much as I would a supplement. You can use bagged Urea 46-0-0.(Make sure it is sprayable.) You will clog your tank if it isn't. Be careful spraying it at anything above 80 degrees. I use Uflexx 46-0-0 Stabilized nitrogen. You will find when you begin to price your fert whether it is spreadable or sprayable that none of it is cheap. Being accurate with your measurement of your product and spray/spread technique is what is going to stretch your dollars.
  3. tombo82685

    tombo82685 LawnSite Senior Member
    Posts: 288

    you also have to think in a 12-0-0 you dont have that much nitrogen in the bag compared to a 28-3-8 or what not. So the 21-3-8 may be more exspensive at first site, in the end you are going to have to buy a lot of 12-0-0 fertilizer bags to get the same amount of nitrogen that the 28-3-8 is giving off. It also depends on how much you are trying to put out in terms of nitrogen, usually in spring you want to go light on the fert like .25-.5lb to limit the amount of foliar growth and moreso build the root structure of the plant.
  4. Happy Frog

    Happy Frog LawnSite Bronze Member
    Posts: 1,224

    When I asked at the Lesco shop, that was the only fert they had in concentrate form. I should have asked for sprayable fert instead.
    I am trying to see if I can spray instead of spreading and how it works out.
    The main problem I have with spraying fert is to find a speed/rate ratio which can provide good coverage on turf with a minimum tank refills.
  5. Happy Frog

    Happy Frog LawnSite Bronze Member
    Posts: 1,224

    The advantage I see in the liquid form is that a lot of the fert is absorbed directly by the leaf instead of the root system so it is more effective than fert granules. I have some incline on most of the ground I have to cover as well and I don't want the granules to be washed of as well.
  6. tombo82685

    tombo82685 LawnSite Senior Member
    Posts: 288

    if your just trying to get good plant coverage just put on like a flat fan nozzle that mist it out. You would have to be careful though of drift with flat fans. For your speed problem I would just use normal walking pace. Then set a gal/K rate per the type of sprayer you have.
    Last edited: Mar 31, 2009
  7. tombo82685

    tombo82685 LawnSite Senior Member
    Posts: 288

    O yea, liquid fert is the best to use. I was just commenting on his first thing you wrote, i wasnt sure if you were talking about granular of liquid fert. Yea liquid fert is the best because of the percent thats covering the plant, the absorption rate is higher, and burn potential is lower.
  8. cod8825

    cod8825 LawnSite Senior Member
    Posts: 501

    Both liquid and granular have their advantages.

    Granular: Able to apply more, faster with less concern for burning(applied as slow release) Nitrogen release is usually considerably longer depending on product and such. Able to buy as combo product.

    Liquid: Generally speaking able to apply less and get great results, faster uptake by plants as generally absorbed directly by leaves. Can do it with awesome tank mixing like pre-m, broadleafs, fert and you can add more.. Drawbacks you can fry a yard like nobodies business. You have to be very comfortable applying 1/2# or more of Nitrogen in liquid form. Yes I generally spray 3 gal a minute with fert + iron.

  9. tombo82685

    tombo82685 LawnSite Senior Member
    Posts: 288

    It's higher
    Last edited: Mar 31, 2009
  10. Happy Frog

    Happy Frog LawnSite Bronze Member
    Posts: 1,224

    That is my concern, right there...
    With the tips I have on my boom (80° flat), I can spray 1.5 gpm over a 8 ft. span
    That is plenty for most chems but limits me greatly for fert application.
    I can push the pressure but will get some drift I'd rather prefer to avoid because of the Pre-M mixed with it.
    With two passes at 2 mph, I can get the proper amount of fert sprayed but it would be diluted in 2 gal of water instead of the 3 to 5 gal. recommended and I don't want to take a chance burning the grass.
    What you think? Will 2 gal of water instead of the 3 to 5 recommended burn the lawn?

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