We actually are planning on planting a few more trees next year, but maybe peach, plum, and cherries. We'll keep them well pruned. I don't foresee us tearing out any of the apple trees or planting any new ones.

I'm not sure if the sprayer has a filter, but I'd be using only liquid pesticide concentrates such as Bonide dormant oil and fruit tree spray, not wettable powders. I didn't think clogging would be a problem with this, but let me know if I'm mistaken. I'm pretty new to all this.

It is possible that the chemicals could be corrosive to the sprayer. But because I already own it and don't really use it, I wouldn't mind the risk of possibly damaging it. I'd flush it after each use.

I think I remember reading that the pressure washer is rated at 1.6 GPM but I may be mistaken. Maybe tomorrow I'll get it out of the box and see how it sprays with just water. Could be obvious once I try that it won't be sufficient.

In 2005 earily in year I purchase 2600 psi pressure washer at lowes with gas engine I had to many pieces of equipment to wash with out one. with about 250 peachtree spray all had was 12 volt sprayer like one used on 4wheeler small boom sprayer but I have Kawasaki mule 3010 to haul it around 4ftx4ft bed there was wand on sprayer and hookup for boom. I went to hardware store pick out garden hose male and 1/2 hose took some looking to find one that small. Mix what every chemicl in 25 gallon tank according direction on label crank up pressure washer and use to spray alway spray from up wind even if have drive to spray from same end everytime. spraying time is about 5 trees per minute and sprays hold tree from one side about 10 feet back from tree. My soap spraying have to change nozzle so pressure drop to low. flusout pressure washer on last tree sprayed with garden hose attached to achive triple washout.

A pressure washer would be a good bet for spraying fruit trees since they have adjustable nozzles and pressure. However the idea of using the soap injector system on one to mix in the chemicals would be a bad idea. Premixing in a tank and then gravity feeding to the sprayer would be a better "solution". I do not think you will need a super powerful model to do the job. Something in the 4 to 7 HP range should have the pressure and volume needed. Also since the chemicals will be going through the pump be aware that some pesticides are abrasive or corrosive in nature. That would make it imperitive that a thorough cleaning after spraying be done. For hobby and small orchards they should work fine.

Home Depot sells a little tank that goes on the end of the nozzle, works super I use Malathion for the trees and mosquito control here Dengue and Malaria are greater danger than pesticide exposure. Also I use for pest control for fire ants, scorpions, wasps, Africanized bees, Chicharras, and for fruit trees. Works really well. My pressure washer is a Honda 3000 psi.

Can you post the model number for your nozzle end tank?

You might consider adjusting the pressure up on your well. You could turn it back down when done spraying. Some pressure switches have two nuts and some have one nut to adjust the pressure. You can find instructions on the internet as to how to adjust the pressure. You only need to adjust the off pressure which is the pressure of the water on the high side. Once you figure how much to turn the nut and which one you could make a note on a tag and it'd be a quick job a couple times a season.

My current switch came out of the box at 55 lbs and I left it there. The old one was set for 65 lbs and would spray up to maybe 20 feet high with much more volume on 300 feet of garden hose.

Don't have model number on unit but below link is what it looks like in garden section of Home Depot the one in the link is for putting soap out but looks the same as the one I use. https://articulo.mercadolibre.com.mx/MLM-1380463009-espumadora-para-hidrolavadora-tc6041-_JM?matt_tool=69349688&matt_word=&matt_source=google&matt_campaign_id=15693992346&matt_ad_group_id=134145041160&matt_match_type=&matt_network=g&matt_device=c&matt_creative=571726898574&matt_keyword=&matt_ad_position=&matt_ad_type=pla&matt_merchant_id=126823153&matt_product_id=MLM1380463009&matt_product_partition_id=1415605770428&matt_target_id=pla-1415605770428&gclid=CjwKCAjw14uVBhBEEiwAaufYx2L7qif9sfAvj3fspx11lTzK-uWDqJW0Yds6D6_YyuQlZjycYwyxSxoC-k4QAvD_BwE

Goes way high to the top of Pecan trees and deep into the jungle behind our place. Fumigate an acre for mosquitoes in less than an hour including fruit trees.

Ive thought about this also for my pecan trees unfortnately i have a pressure washer line the post is refeering you have to use the black low pressure nozzle inorder for the chemical tank solution to flow as far as corrosive nearly all home use washers the chemical is released at the spray wand no contact with pump

as mentioned if i could inject the chemical using the red tip this woukd be great i dont think damage to trees is a factor due to the distance of spraying

mix your chemicals in a 55 gallon drum, then reroute the sprayer intake hose in to the tank.

Lj Granger's method works with precision, for you can accurately mix the chemical & water (I use a 5 gallon container), and a pressure washer like my 2300 gpm Greenworks, with 5/8" intake hose, will shoot a generous stream at least 30' up in trees. Works well. But I also found a Karcher "foam cannon" sprayer (Walmart, Lowe's, amazon, etc.) for about $22, that snaps onto the end of the pressure hose wand in place of the usual spray nozzle (std 1/4" fitting). Its feed adjustment is intended for detergent for foaming your car, so the adjustment is a knob that is not calibrated at all (in ounces or anything). But a little experiementation gets the mix close enough, and that's what I use on our 25-foot-tall apple trees. Fast, simple, easy.