just got my z-spray and need help

Discussion in 'Pesticide & Herbicide Application' started by grassmasterswilson, Aug 21, 2007.

  1. grassmasterswilson

    grassmasterswilson LawnSite Platinum Member
    from nc
    Posts: 4,548

    arrived today and i have already played with it. It is calibrated at 5 mph but I think that 2-3 mph for tight yards is more my pace until I get use to it. It also came with purple nozzles that put 1/3 gallon at 5 mph per 1000 sq ft. My question is what nozzles did you guys change to, how fast are you running, and how much are you putting out per 1000 sq ft.

    I want to put out around 1 gallon per 1000 at 3 mph. what nozzles should I use?
  2. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 12,229


    No need to change nozzles--just adjust you rate of herbicide in the tank.

    The usual is one third gal per 1000 sqft (about 43 ounces per thousand).

    You want to go 3mph. You will put down 5/3 times 1/3 gallon or 5/9 gallons per thousand--about 71 ounces.

    Tank holds 12 times 128 or 1536 ounces.
    1536 divided by 71 is 21 thousand sq feet per tank.

    You need to add about 21 ounces of Three-way per tank.

    Of course, a lot depends on the swath width and square feet covered per gallon. So measure carefully to determine your actual square feet covered with a tank (or one galllon) of solution. Adjust accordingly.
  3. turfsolutions

    turfsolutions LawnSite Senior Member
    Posts: 851

    I think you mean the blue nozzles, unless they are now purple. Here is one way to calibrate. Pour about a quarter of a gallon into an empty tank. Run the sprayer on flat ground until you hear air in the lines then turn off sprayer. Now pour in one gallon of water exactly. Mark a starting point in the street or parking lot and turn on sprayer with all nozzles on and drive a straight line at 3 mph at 35-40 psi. Mark the point at which the nozzles start blowing air. Take the length you traveled in feet multiplied by the width of your spray pattern and you have the square footage per gallon of mixture sprayed at 3 mph at 35-40psi.

    Lets say you measured 1500 square feet of coverage per gallon of mixture at that speed. If you put 10 gallons of mixture into the tank, that will give you 15,000 square foot of coverage (10 gallons x 1500 square feet). Lets say you are applying Q4 at a rate of 2.8 oz per 1000 square feet. Then you would take 2.8 oz x 15 (15 thousand square feet) = 42 oz. Now you know that if you mix 42 oz. of Q4 with water totaling 10 gallons in the tank you will cover 15,000 square feet at 3mph at 35-40psi.

    Keep in mind these are not actual numbers but the math is the same. You will have to calibrate your machine this way or another similiar way. Just be sure to double check your math. One way to know if you are calibrated is to mix enough to spray a 15,000 square foot lawn. Treat a lawn that is pretty close to 15,000 square foot. When you are done treating, your tank should be either empty, or pretty close to it.

    Good luck
  4. gregory

    gregory LawnSite Bronze Member
    Posts: 1,066

    i would call l.t.rich and ask them they are really good about answering questions..i got the jr and ordered some 1g/1000 nozzles also ...
  5. rcreech

    rcreech Sponsor
    Male, from OHIO
    Posts: 6,057

    Why are you guys pushing so much volume? 1 gallon/1000 is VERY high for most products.

    Just curious!

    I would need a tanker truck to follow me if I did that. On my larger lawns I can spray around 10+ acres a day. That would be 430 gallon of H20.

    I run .28 gallon/1000 with my PG and get excellent control. I can spray a little over an acre with 12 gallon. If I spray the same 10 acres I only use 120 gallon of H20.

    At the end of the day we are going to get the same results only you spent alot more time filling!
  6. puppypaws

    puppypaws LawnSite Fanatic
    Posts: 8,921

    You are right again my friend, tell these folks there is calibration bottles out that gives you a distance to drive and be timed ( maybe 176'). Measure the distance, run it the speed you want to travel and time it with a stop watch. Turn your sprayer on at the pressure setting you want, hold the bottle under the spray nozzle and catch the spray for the same exact time and just read on the calibrated bottle how much solution you are spraying per acre with that nozzle at that speed with that amount of pressure, very simple.

    You can check to see that each nozzle is putting the same amount by repeated process.

    Here is a link explaining this:http://extension.missouri.edu/xplor/agguides/agengin/g01270.htm
  7. rcreech

    rcreech Sponsor
    Male, from OHIO
    Posts: 6,057


    You are really starting to scare me as we think WAY too much alike!

    I do use a calibration bottle on my large sprayers. I bought a cheap FIMCO bottle at TSC and love it! I have found that the easier it is to calibrate, the more often it happens!

    I live on a country road and have painted red lines at 100'. All I have to do is load with H20 and test (set speed and pressure). I can re-cal my sprayer in less then 5 minutes and that is checking it multiple times.

    They work great and give you the exact gallons/acre. All you need to know is your nozzle spacing!

    I think I gave like $7.00 for it!

  8. turfsolutions

    turfsolutions LawnSite Senior Member
    Posts: 851

    First off, I said this is one way to calibrate. Since he just got the machine I think it would be best for him to ride it as much as possible and he could also use this oppurtunity to set the speed bar to 3mph.

    Second, I said the numbers were NOT actual. I used easy numbers for him to understand.

    Third, I have sprayed anywhere from 1/4 gallon per thousand to 1.3 gallons per thousand, depending on the nozzles I use and product. You can spray low volume on dandilions, clover, and any other easy to control weed, but when you are spraying ground ivy and wild violet, 1/4 to 1/3 of a gallon per thousand is not going to give you proper control.
  9. rcreech

    rcreech Sponsor
    Male, from OHIO
    Posts: 6,057


    I am not sure who your post it to....but I was strickly going from Gregory's post. He stated he bought 1 gallon/1000 nozzles.

    And also, I get EXCELLENT control of Wild Violet and Ground Ivy with my PG using .28gal/1000.

    I am not sure why you would need to increase your gallons, as it is the AI that takes out the plant!

    So you might get six specs on the plant vs. my two specs....but the concentration of my drops are much higher.

    People always amaze me when talking about increasing gallons and getting a better kill. Yes, you are getting better coverage...but your kill will be the same using lower gallons.

    Now when it comes to contact products, that is a different game, but that isn't what we are talking about here.
  10. puppypaws

    puppypaws LawnSite Fanatic
    Posts: 8,921

    Right again, this is very confusing to people, it was even confusing Monsanto until they did the research.

    I had a Monsanto specialist on my farm when they were recommending 20 gal. per acre. He told me I had to use that amount to get good results. I said I don't like filling up spray tanks for no reason, I like to get more concentration of the chemical I am spraying on the plant, just enough to stick it on the plant instead of giving it a bath. I don't need the chemical diluted and running off the plant with more of the actual compound you spent all that money on hitting the ground. I don't need to kill the ground I want to kill the target vegetation.

    Believe me I have seen this confuse people for many years until they starting asking questions about the excellent results I was getting when I sprayed. Even then some of them could not make themselves believe what they saw and I told them.

    Low volume works very well with a contact herbicide such as Gromoxone (Paraquat) depending on the density of the vegetation, larger or thicker vegetation the more carrier to penetrate the canopy. I have sprayed sparse vegetation many times with a contact herbicide in 10 gals. of carrier and had a perfect kill, thick stuff that is hard to penetrate 60 lbs. of pressure and 30 gals. of carrier may be necessary.

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