I read in the QDMA forums that people like to use 2 quarts of Gly mixed in 25 gal of water per acre. Personally, I have been mixing 3 oz. of Gly per gallon of water and spraying until covered.
Ideally, ~10 gallons per acre mixed at the rate of 1-1.5 qts per acre (per 10 gallons of water) of the 4# product should be adequate. If you have 6# product then 20-25 oz per acre (per 10 gallons of water) should be sufficient. (for reference, a qt is 32 oz.) About 1.5 acres would be the short answer but with overlap and over spray you'll probably get about an acre+.
If i'm using the 41% glyphosphate from say TSC, any idea how much I should mix per gallon? I've 3 acres that I need to kill.
Not really as simple as saying the 15 gallons covers "X" number for acres. Reference I use for my commercial lawn spraying business... Formula Calibration Method
ISU Weed Science Online - Roundup vs. Touchdown Really depends on the label, there are so many variations of the product on the market that it's impossible to say for certain. You can look at the label for the active ingredient and cross check it against the graph on the link I provided and tell what you have. I'm pretty sure that's a 4# product so it's a light load product so if you mix it to apply it as 10 gallons of finished spray per acre then 1-1.5 quarts per ten gallon of water per acre should work okay (that's ~3.2-4.8oz per gallon). I tend to either mix it strong or apply more gallons per acre of weaker 32oz/10gallon finished spray. The generic glys tend to be wimpy and I'll often add ammonium nitrate (AMS) to my finished spray to boost it's effectiveness as well as NIS (non-ionic surfactant). If what you're spraying is young and tender then it'll be easier to kill, if it's large and older stuff then I'd tend to go heavy and add some AMS at least. (I'm assuming as early as it is that everything is probably young and tender). Or you can look at the nozzle and look up the flow rate and chart out ground speed for coverage and volume. Ground speed is easier to adjust and allow for than sprayer pressure on ATV sprayers. Many people will actually fill up their sprayer and mock spray their little food plots and if they know the acres of the plot then they adjust ground speed to match desired gallons per acre of finished spray, it's a pretty effective means to calibrate your specific set up. Adjusting pressures on an ATV rig is going to suck eggs and likely wind up getting poor coverage and droplet size/spray pattern. Once you know how much volume at what ground speed your rig does at full pressure, you're good to go. If you mix a qt per acre of 10gln finished spray and your rig sprays 10 gln per acre if you drive 5.5 MPH then you can just rely on that consistency and fill and drive until empty time and again until finished and not worry about acres.
I have the 25 gallon fimco with tbree nozzle boom. Goes on my sportsman 700 and I fill it all the way. Ya its definitely alot of weight. I have the suspention tightened all the way and she still has a good sag with the sprayer full. Affects the turning alittle at first but these machines are built for work and thats exactly what I use it for ! Sent from my SCH-I535 using Tapatalk