Spraying GrazonNext HL

I sprayed the property with GrazonNext HL today using the spray map that I created previously.  However, my plan somewhat changed when I arried and prepared to spray.

I put 24 oz of GrazonNext and 8 oz of FarmWorks 80/20 Surfactant per 25 gallons of water.  Before spraying, I paced myself on the ATV with the tank full of water and 3 mph was about the right pace to cover an acre per tank.  This was with the boom setting on high.  I decided to mix it at 1.5 pints per acre as I thought I would be running below before I was able to do it all.

I began spraying and as I progressed realized I was not using as much of the GrazonNext as I expected.  The two gallon contains 256 oz which would have made a total of 10.6 batches/acres.  Somehow, I made a mistake and thought I only had enough for 5.3 acres.  In the end, I covered 7 acres with some to spare for a second coat along the east fence later if needed.

Spraying Grazon Next HL

I recently purchased a two gallon container of Grazon Next HL.  I really need more to treat everything but I'm going to use this to treat all but the south fence perimeter and the main clearing, tank, and deer stand area.  What I plan to treat is approximately 4.85 acres as calculated using the Sod Solutions measuring tool.

I plan to treat most of it at 1.5 pints per acre as that is appropriate for the weeds which grown along everything but the east fence.  The east fence has established ragweed which requires a rate of 2 pints per acre.  This is going to be really close with the 4.85 acres.  

The Grazon needs to be mixed with water but the rate at which is needs to be mixed is a little unclear.  I have a 25 gallon sprayer so it would be best to spray a 1/2 acre or full acre with one refill just to minimize trips driving around to refill the ATV mounted tank.  I need to research this part a bit further.

I'll likely buy a non-ionic surfactant to help the solution stick and absorb.  These are normally used at a rate of 1 to 2 quarts per 100 gallons.  I can get a gallon container at Tractor Supply for about $25.  One of these should cover me if I'm using 25 gallons per 1/2 acre as I would overall be using about 250 gallons.