So I yust got informed from the fields that this bugger is doing some damage
In the past I would get rid of them by using these really small eals that I had to add to the roots systems by hand since the small eals will get killed when passing treu a pump of irrigation
This time the fields are a bit bigger so looking what are solutions to this isseu
Whatcha got on hand for spraying and such hardware-wise?
I know DE works for killing them but when you’ve got a lot of real estate that’s damn hard to cover all that ground
Gonna need a cannon fogger, usually a commercial agriculture store would have them, or uline on occasion will catalog them as well for cleaning purposes.
You’re going to want to consider droplet size if you’re outdoor.
https://www.dripdepot.com/coolnet-pro-fogger-w-check-valve-pressure-rating-standard-pressure
^^^Cheap way to cover a lot of sq ft
I prefer ultrasonic atomizer nozzles for hand spraying, or automated indoor spray set ups.
Talstar P is what I have been using on my eggplant in the garden. They always get beetles the worst.
The problem is your desert climate. Any irrigated plant will be the only food around for bugs. Strips of grass between plants would be ideal, but obviously that’s in a perfect world, where you can cultivate an environment that includes predators to all the bugs.
DE ? Wich is ?
I have the means and equipment
The question is what is recommended to use
diatomaceous earth (spelled that right the first time without google 
)
Diatomaceous earth is very effective (in conjunction with sprays) as long as it remains dry. In an outdoor setting it will usually only get them to migrate at best. It will kill any hard-bodied insects that come into contact by piercing their exoskeletons (it will also deter slugs/snails, etc.).
Ok makes sense but then for sprays ?
I looked into the fungus based pesticides
Anyone worked with those ?
So this one might actually be a good application to run plant therapy from lost coast, in conjunction with a application of bio works rootshield microbes as a root drench on the soil then cover 2-3” around the base of the plant with DE/sand for preventative measure. Keep the sand & de dry. Spray foliars when it’s little to no light allow 1 hour dry back to happen, then blast with lights.
Fogger/ paint sprayers will be best application.
I do not believe fungus based pesticides (like beauvaria bassiania) are very effective against beetles. I have a PhD entomologist friend (albeit he specializes in mosquitoes, he has a lot of knowledge in general for pest control and I use him quite frequently for suggestions) suggested bifenthrin and cypermethrin as solid active ingredients that should take care of bark beetle’s.
He didn’t specify a specific product so you may have to do some research there, but that might help. Pyrethroids generally have a bit more favorable photodegradation than other pesticides such as neonics (such as imidacloprid) although the level of photostabilization will most likely vary depending on which pyrethroid used, but if you want something that will degrade more rapidly I would stick to the pyrethroid family of compounds.
We use a lot of biologics (fungus based pesticides like bassiana) here for our farms, we have several hundred acres we spray but we have never dealt with beetles before so I can’t say how effective they from personal experience, so I can only go based on the recommendation I got.
Feel free to DM me if you want to discuss anything specific, happy to help!
** Edit ** @Roguelab here is a resource he just shared with me as well. This also lists Carbaryl and Permethrin as options along with a few product examples. Obviously a lot of this is talking about park management, but the products/active ingredients themselves will work specifically against Bark Beetles. https://ccmedia.fdacs.gov/content/download/114242/file/Leaflet-14-Bark-Beetle-Insecticides.pdf
Pyganic for a quick knockdown, then rotate grandevo/venerate