Liquid Fertilizer using Spray gun from Hydro Seed

Discussion in 'Lawn Mowing' started by Daren, Jan 25, 2001.

  1. Daren

    Daren LawnSite Member
    Posts: 71

    Hello, I recently purchased a 500 gallon Hydr Seeding unit with The spray Attachment for Pesticide and Fertilize. My question is. When I use it to apply Liquid Fertilize. How do I know how much to apply to the grass. I know how to mixit 1 lb per square foot. But when I go to apply it how do I know Im applying it at the right amount? Spray just enough to wet the grass or soak it in? Thanks!

    Daren
     
  2. Daren

    Daren LawnSite Member
    Posts: 71

    It was late when i wrote this. I put 1 lb per square foot. I meant per 1000 sq ft. Anyway Appreciate any help!

    Daren
     
  3. Indiana

    Indiana LawnSite Member
    Posts: 246

    This is exactly what I was wondering yesterday. I have a new turf sprayer and what to know the same thing.

    I guess the manufacturer didn't say or give any hints. I am going to try to find out and let you know.
     
  4. Indiana

    Indiana LawnSite Member
    Posts: 246

    First, you have to find out how much your sprayer pumps out at your application pressure. If you have an adjustable knozzle find a pattern that will not leave any area in the pattern that will not get any or too much. When you have your pattern down, find a setting on your engine/pump and you agitator that will give a constant pressure. I would say that 30-50 psi would be good. Now measure an area that you will treat with just water. Do your calculation on how much water vs. fert. and put that amount in your sprayer. You might want to mark the area you want to treat with some marking tape.

    Then experiment, try to make the water evenly cover the area that you've sprayed.

    This is how you calibrate a lawn sprayer. The technique is the same for any application. Hydroseeding is the same. My fertilizer supplier says to put a half of pound of per 1000 square feet per application. He said maybe more if your real carefull.
     
  5. lx665

    lx665 LawnSite Member
    Posts: 147

    Daren, What brand hydro seeder did you buy? Have you used it yet, if so how did it perform?
     
  6. Daren

    Daren LawnSite Member
    Posts: 71

    Hey Indiana, were practically neighbors. i live over in Cleveland, TN. I bout the Turbo Turf HS-500. No I havent gotten to use it yet. Very anxious to. Going to try it out on my lawn in the next few weeks. Thanks for the reply's. I really dont know what the pressure is on it. Guess I will have to try and find out. I bought the Spray n seed option where you just change hoses to use it as a sprayer!

    Daren
     
  7. Skookum

    Skookum LawnSite Senior Member
    Posts: 675

    You might want to also use a bucket and check your gallon per minute rate. Use two buckets and a stop watch. Start by spraying into one bucket then start the stop watch as you move the spray to the other bucket. Then at one minute move the spray back to the other bucket and then stop spraying. Now measure your bucket with one full minute of spray. This is your gallons per minute at that settings on your sprayer. You should check this periodicaly as sprayers will lose calibration like any other equipment.

    Now do your square footage test at a rate of gallons of mix for that amount of footage and you can even include a time to check the proper amount that you have put down in that test plot. If you still have time left you are moving too fast, run out of time before spraying all the area, then you are moving too slow for the recomended rate. You can check your time against your gallon usage for a more accurate check.
     
  8. Daren

    Daren LawnSite Member
    Posts: 71

    Thought of something.DOes anyone know of a Flow meter that you could place in line? I think it is 1/2 or 3/4 inch. A meter that would show the gallons being flowed through. this would greatly increase the accuracy no matter how much pressure or how much the valve was opened or closed.

    Daren
     
  9. Daren

    Daren LawnSite Member
    Posts: 71

    Thought of something else. What about just hooking a Hose end sprayer to the end and using it this way.
     
  10. Skookum

    Skookum LawnSite Senior Member
    Posts: 675

    Daren,

    That is exactly how I use my sprayer with a hose end sprayer. For a small one man full lawn and landscape maintenance operation like myself, it works out great. You could most surely use a hose end sprayer and just have water in your hydro tank. In fact after I seen a hydro seeding unit with the sprayer attachment at a trade show this fall, I would have bought one instead of my sprayer unit had I known they were available. That would be a nice all round use setup, nothing you could not do.

    Flow meters are available from all most all the sprayer companies. http://www.westheffer.com has one for JUST water flow at $147.00 that I plan to get and use with my hose end setup. The ones for chemical mix list for abot $350.00
     

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