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| XR versus Turbo-teejet might be about double the driftable fines.
Depending on the XR nozzle size (the larger the nozzle, the naturally coarser the spray gets too) it might be a reasonable choice. Generally glufosinate/liberty has a label for "Spray using ASABE MEDIUM spray classified nozzles or coarser", so just make sure you are covered within the MEDIUM spray quality at the very least.
A regular (not turbo twinjet) Twinjet will have more drift than a single XR as it'll effectively be two smaller XR tips (more drifty x2) and the angle will end up with a ton of your spray getting stuck in the top of the canopy with the 30° angle of the patterns front and back, so it kind of shoots you in the foot to just smoke the top of the waterhemp and just make it angry with a vengeance.
Turbo-Teejet might be a good option as well, but size plays into it as well. If a small TT nozzle, might be a tad fine yet, but it'd at least be in the medium spray quality to follow chemical label if you were sticking with a 110-04 nozzle size. TT would be 'coarse' spray quality between 30-40PSI, and MEDIUM beyond 40PSI.
So, at like 45PSI-ish where the spray quality turns to medium, roughly 18% of your spray is going to be driftable fines. A bit heavy than I'd like to see guys (usually aim for <15% driftable fines when using contact herbicides like glufosinate)
For an XR110-04, you are medium up to like 40PSI on the chart, and FINE beyond that. So, at 40PSI, probably ~25% of your spray is going to be driftable fines (in ideal conditions). If the wind is turned up to 12mph, that drift factor doubles, so in reality 50% of your spray might not go where you want (or evaporate in the transit/etc). All in all, that drifty spray droplets are really only able to spray out of the nozzle body like 6-8" or so before they slow down to nothing, with only wind speed/turbulence/gravity to bring it into crop.
So, all in all, at the very least you know I wouldn't be benefitting from you buying more Teejet nozzles (as we are a competitor lol), but it might help you make the call.
The other thing when I'm talking driftable fines, its based on water. Liberty likes to take off in the wind a bit (almost like soap in the wind), but using an adjuvant/drift reduction agent can cut down drift significantly. My understanding is that it'd be somewhere around the realm of a 40% drift reduction using proper agent/etc, so that'd take a lot of hurt off of your drift side of things as well in case it does let you use the XR nozzles at a lower speed/pressure and have it make sense.
Anyways, lemme know if that makes a bit of sense. At least give you some more information so you can make a better informed decision with your options.
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Tips for spraying glufosinate post on soybeans for waterhemp control
