Let me give y'all more details...
We have about 25 acres of cleared fields. No crops, just regular mowing.
A few years ago, the county was resurfacing a bunch of roads. They hauled in dirt to dress up the edges of the roads. Well, the dirt was contaminated with an invasive weed called Cogongrass.
http://www.cogongrass.org/cogongrassid.pdf
Since we were unfamiliar with it, we didn't really notice until it was well established. Now it covers nearly 10 to 12 acres.
So, the county is gonna give us a bunch of stuff called Arsenal. We'll probably need to treat this stuff for a couple of years. I know we'll need to apply kinda heavy to kill this stuff.
I expect to travel back and forth, spraying large 3 to 4 acres spots and a handful of spots about 20ft X 20ft.
My sprayer uses a pto driven Hypro 6500 (9.7 gpm @ 540 rpm). The max speed is 1200 rpm and the max press. is 150 psi. The system also has a regulator rated for up to 250 psi, but I don't know what the minimum setting is.
I also found these kits:
Rittenhouse | Weed Spray Boom Kit
Rittenhouse | Tree / Shrub High Pressure Boom Kit
I assume my system will feed the high pressure kit with no problem with the pto rpms up.
And I guess the system will NOT overpower the low pressure kit with the speed down and the regulator set low.
But, I have no experience with boom sprayers/flow rates/pressures/dispersion rates or spray patterns.
I will greatly appreciate anything I can learn from y'all.