Home brew AG sprayer

   / Home brew AG sprayer #1  

def38

Platinum Member
Joined
Jan 1, 2017
Messages
674
Location
woods and mountains of Alabama
Tractor
M-F 231S
I've got a 50 gallon plastic chemical barrel that I want to convert into a homemade sprayer. I'll power the spray pump with 12 VDC from the tractor's electrical system. I'll mount it on a small trailer. I figure I'll need the following;

1- 12VDC pump.
2- Fittings for the barrel (pickup tube, threaded plugs for the two existing holes in the barrel end).
3- Reinforced plastic tubing.
4- Spray wand with handle valve.
5- Various nozzles for the various spray patterns.

I wish to broadcast spray the grass, treat the fruit trees, spray the vegetable garden and spray for bugs around the property. I'll not spray ammonia type liquids.

I have contacted sprayer supply companies but they do not reply.

What pressure and flow do you recommend? What nozzles will I need? Any other suggestions?

Thanks in advance...
 
   / Home brew AG sprayer #2  
image-4255699168.jpg



image-3694038650.jpg



image-1828614879.jpg



image-4094644351.jpg



image-3654835447.jpg

Here's one i built. It has a valve to divert from the rear broadcast to a wand. Works great. It will spray a 40 foot swath. I use it to spray Roundup. Basically the plumbing is just copied from a standard ATV sprayer, just bigger

(
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)
 
   / Home brew AG sprayer #3  
View attachment 501837



View attachment 501838



View attachment 501839



View attachment 501840



View attachment 501841

Here's one i built. It has a valve to divert from the rear broadcast to a wand. Works great. It will spray a 40 foot swath. I use it to spray Roundup. Basically the plumbing is just copied from a standard ATV sprayer, just bigger

(
"<UILongPressGestureRecognizer: 0x14d77570; state = Possible; view = <UITableViewCellContentView 0x14fabc20>; target= <(action=_longPressGestureRecognized:, target=<TTTableImageItemCell 0x153eae00>)>>"
)

That is a beautiful job. Clean, simple and correct.
 
   / Home brew AG sprayer
  • Thread Starter
#4  
Thanks. Nice looking system. What kind of flow does that pump provide? Is yours powered by the tractor battery?

Initially, I'll be using a wand only but with 5 acres, I may have to add a spray head. What nozzle(s) are you using?
 
   / Home brew AG sprayer #5  
The pump was the most powerful i could find, don't remember the specs. It will empty the 250 gallon tote pretty fast, in about an hour or so (I'm guessing). The spray head is from tractor supply and cost around $100, but works great . I occasionally use a regular wand from Northern. I planned to hardwire it to one of my truck remote switches, but never did. So I just use a deep cycle battery in my truck bed and connect it with alligator clips.

image-3366980589.jpg

Sent from my iPad using TractorByNet
 
   / Home brew AG sprayer #6  
I use a 6 vane roller pump on the PTO to power my sprayer. I run it about 1000 RPM and it does a great job supplying the 7 nozzles with liquid. I run the system at about 25 psi.
 
   / Home brew AG sprayer #7  
That last picture with nozzles working is spraying 1/2 of the product into the air and concentrating on the overlap due to the angle and losing product to the air at 45 degrees. Round up and most applications needs direct contact with the plant.
You need a boom with nozzle spacing and height for proper overlap/coverage. The triangle sprays need to slightly overlap without converging (slight left to right from center, my nozzle holders have this angle built in) when contacting the surface. My Honda gas home built sprayer needs 18 inch high and 18 inch spacing about 45 psi with Teejet 11008 VS nozzles. TeeJet's website should have a calculator for nozzles. This can be attached to your wand.
I was just given a older boom sprayer that fits in JD Gator it uses 10 inch spacing and 10 or 12 inch height. I have not looked at the motor or started. It has Wilger Combo Jet DR80-06 and Fr80-02 nozzles.
I do not use electric pump motors. Use the width of the trailer and see if the pump can support the nozzles needed for full width pass or more, you really don't want to drive on your spray. The new commercial sprayers even a foam marking system to set up your next pass overlap. I am old school and use my previous tire depressions and gauge the distance to overlap the previous pass. This should work for you. You want the edges of the outside triangle spray to overlap about two inches. Test on a dry surface like a parking area.
I am a golf Superintendent and mainly spray tees and greens (70000 sq feet for greens). Five acres is my last three fairways that I rarely spray them. My boom is 18 feet wide and it takes time and reloading the 110 gallon tank. Even flicking granular fertilizer on the fairways 30 foot spacing it takes a long time for 5 acres and only twice a year.
Depending on your water and what you spray brass nozzles are expensive. I only use TeeJet aluminum nozzles and replace once a year or over 12000 gallons sprayed.

A tip on figuring the amounts to use mix with water. I found this very helpful when I have the odd brain fart or with a new product. You should now your area size. The label gives the rest or recipe. If 3 pies take 90 cherries, how many to make one? or 10 pies?
3/90=1/30 or 10/300
You have three of the four numbers needed. Set the numbers over the dividing mark and cross multiple and divide by the other number you know. Then do the same with water to make the spray up. The pie reference was from grade five math found online but I understand the math again and can carry on. Speed over ground is determined by volume over distance at set speed, same as above you know your speed and the amount used(measuring each nozzle over known/same time) How much do you use over time and known distanst at a given speed? It is only ratios and can be as simple as cherries to pies or chips to cookies. This is confusing to start but think pies or cookies and it might make you giggle how easy it can be. I am in metric and have to covert also. 4-6 mph speed is my normal speeds.
Happy to answer any questions.
Chad.



Thanks. Nice looking system. What kind of flow does that pump provide? Is yours powered by the tractor battery?

Initially, I'll be using a wand only but with 5 acres, I may have to add a spray head. What nozzle(s) are you using?
 
   / Home brew AG sprayer #8  
I like this. Out side the tires. Speed over ground at 1000 rpm is gear dependent and should be stated.
I use a 6 vane roller pump on the PTO to power my sprayer. I run it about 1000 RPM and it does a great job supplying the 7 nozzles with liquid. I run the system at about 25 psi.
 
   / Home brew AG sprayer #9  
This shows heavy product in the overlap and casting to the distance, heavy in the middle. Those nozzles look great! separate on a boom and you are good to go. You look to need one truck width for overlap currently for proper spray pattern and not efficient.

The pump was the most powerful i could find, don't remember the specs. It will empty the 250 gallon tote pretty fast, in about an hour or so (I'm guessing). The spray head is from tractor supply and cost around $100, but works great . I occasionally use a regular wand from Northern. I planned to hardwire it to one of my truck remote switches, but never did. So I just use a deep cycle battery in my truck bed and connect it with alligator clips.

View attachment 501933

Sent from my iPad using TractorByNet
 
   / Home brew AG sprayer #10  
I like this. Out side the tires. Speed over ground at 1000 rpm is gear dependent and should be stated.

Speed over ground is desired application rate dependent and varies depending on what I am doing and how it is mixed although typically I travel somewhere between 4 and 7 mph.
 

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