Can someone check my 2,4D math

[DennisH]

I picked up a FIMCO 40 gal 3pt sprayer some 2,4D so I'm ready to declair war on my yard. Area to treat is 1.3 AC to get rid of / control broadleaf and wild onion.

At 40 psi the sprayer will put out 12 gal per AC at 5 MPH or 16 gal for 1.3 AC.

Argisolutions 2,4D LV4 for broadleaf is 2 pints per AC and 2-3.15 pints per AC for wild onion. I will split the differance and use 2.5 pints (40 0z) per AC or 53 Oz for 1.3 AC

So I put 16 gal of water in the tank and 53 oz of 2,4D.

Is this correct?

 

[Fossil Farm]

Not sure of your calculations yet, but you may want to check out the extension guide on controlling wild onion from Clemson. It recommends a fall treatment, or very early spring (might be too late??) and I believe wild onion is a grass, which by itself 2,4D will not control wild onion. The guide recommends multiple treatments if a 2,4D derivative is used. I googled "wild onion control" and it was near the top, "hgic2311.pdf" from clemson university. Good luck.

 

[k0ua]

I picked up a FIMCO 40 gal 3pt sprayer some 2,4D so I'm ready to declair war on my yard. Area to treat is 1.3 AC to get rid of / control broadleaf and wild onion.

At 40 psi the sprayer will put out 12 gal per AC at 5 MPH or 16 gal for 1.3 AC.

Argisolutions 2,4D LV4 for broadleaf is 2 pints per AC and 2-3.15 pints per AC for wild onion. I will split the differance and use 2.5 pints (40 0z) per AC or 53 Oz for 1.3 AC

So I put 16 gal of water in the tank and 53 oz of 2,4D.

Is this correct?

I think so. if all your premises are correct, in other words you are supplying the facts, but I don't see anything wrong with your logic. I cannot speak to the dosage or anything like that

James K0UA

 

[Oldstuff]

Dennis- One thing I think you should do is what I did and I did it because I had read that this is the most precice way to check your sprayer's actual output. Use your math calculation by putting the particular amount of water only in the sprayer and do a drive at the prescribed speed and measure the length and multiply that length times the width of the spray in order to get the actual square footage at that particular speed. It will also help you to determine if the speedometer is accurate.

Oldstuff

 

[Seth]

Time yourself driving a known distance, say the distance needed for your boom width to cover 1/10 acre. Fill the tank with water. Catch the water from one nozzle for the amount of time you recorded earlier. then multiply by the number of nozzles and 10. You now have the amount your sprayer puts out, per acre, at that speed.

Most of the weeds you see now are winter annuals and they'll pretty much go away when the weather warms. The best time to spray for these would be in the fall. Now that I've give n this advice I'll tell you that I sprayed my yard last week because I was tired of looking at the henbit and chickweed (and some onions). I'm telling myself that I'll get my act together next fall and do it at the right time.

 

[sixdogs]

First, I think the math is wrong and that's way too much concentrate for that mix. I use the bulk 2 1/2 gallon containers of "concentrate" and I think I use maybe an ounce per gallon. But that's a guess and I digress.

Let me offer my tale of woe with 2,4D from last spring. I normally hand spray here and there in the spring and summer and then spray the grass with the sprayer in the fall. Last spring, however, I decided to take care of some weeds along the driveway in May. Well, the drift on a calm day and residual effect of the stuff killed a few of my wife's plants--20 ft away-- and also killed three maple trees of mine. The biggest was maybe 15 ft. It stayed green all summer but grew no more leaves and the buds are dead so I figure the tree is dead.
Same thing with a 15 ft Norway spruce. A good amount of the new growth died back and I basically lost a year of growth. After that lesson, I now won't spray 2,4D from a pressure sprayer untl early fall. As well, there are two types of 2,4D. The LV drifts big time and the Amine drifts a little less. Just my two cents.

 

[DennisH]

Great info everyone, I will put all this to use tomorrow.

 

[foreman Etexas]

I picked up a FIMCO 40 gal 3pt sprayer some 2,4D so I'm ready to declair war on my yard. Area to treat is 1.3 AC to get rid of / control broadleaf and wild onion.

At 40 psi the sprayer will put out 12 gal per AC at 5 MPH or 16 gal for 1.3 AC.

Argisolutions 2,4D LV4 for broadleaf is 2 pints per AC and 2-3.15 pints per AC for wild onion. I will split the differance and use 2.5 pints (40 0z) per AC or 53 Oz for 1.3 AC

So I put 16 gal of water in the tank and 53 oz of 2,4D.

Is this correct?

I spray 2-4d on my pastures 1oz.to 1 gallon water, with alittle dawn soap,2nd gear, 25psi,at 4.0mph witch comes out to roughly 20oz.per acre. Thats a pretty heavy dose you got there,just my opinion....

 

[hosspuller]

Watch out ... You setting yourself up for a big issue. You haven't confirmed your spray output regardless of the concentration.

The way I did it ... Fill the tank with water only. Then spray the fields with your proposed settings and speed. This will confirm that the amount of water will be spread over the land area you figured. If not recalculate....
:thumbsup:

 

[Seth]

First, I think the math is wrong and that's way too much concentrate for that mix. I use the bulk 2 1/2 gallon containers of "concentrate" and I think I use maybe an ounce per gallon. But that's a guess and I digress.

Let me offer my tale of woe with 2,4D from last spring. I normally hand spray here and there in the spring and summer and then spray the grass with the sprayer in the fall. Last spring, however, I decided to take care of some weeds along the driveway in May. Well, the drift on a calm day and residual effect of the stuff killed a few of my wife's plants--20 ft away-- and also killed three maple trees of mine. The biggest was maybe 15 ft. It stayed green all summer but grew no more leaves and the buds are dead so I figure the tree is dead.
Same thing with a 15 ft Norway spruce. A good amount of the new growth died back and I basically lost a year of growth. After that lesson, I now
won't spray 2,4D from a pressure sprayer untl early fall. As well, there are two types of 2,4D. The LV drifts big time and the Amine drifts a little less. Just my two cents.

It's not just drift. 2,4-D volatilizes so you get injury when there was no drift. I saw a greenhouse full of dead tobacco plants because they got too close with the 2,4-D.

 

[sixdogs]

You can math out how much you are supposed to spray based on tips used and speed but because of inefficiencies and overlap you could wind up using a whle lot more. The narrower the sprayer, the worse the problem. I would guess a 10 ft sprayer would use 25% ? extra, or more. For example. My sprayer is 28 ft and I figure I use 15% more than I should because of unintentional overlap. And mine is only that small amount because I have low flow spray tips and watch my speed carefully. I spray at 15 PSI.

Here's a flow chart
http://www.teejet.com/media/a73d1d6c-9cdb-4123-bd8d-3b0a9d0bcaf5-CAT50-US_LoRes_p012.pdf
for the tips you probably have. It's the chart I use for my XR8003, which is the most common tip.


Excellent point on the "volatilize" comment post above. Very true and 24D keeps on being a problem long after it's sprayed. I wrote a post on this last year when I learned I had to wait 30 to 90 days after spraying before alfalfa seed would germinate. I had trees still showing stress till the end of the summer.

 

[dusty3030]

http://www.cdms.net/LDat/ld40K005.pdf

Here is the label for his product. Original poster you are correct on your dose according to the label.

I'd say try 20 gallons of water instead of 16 to make up for overlap and your 2.5 pint acre rate sprayer set for 12 gal an acre you should do ok

Spraying early in the morning or late evening to avoid wind as much as possible.

 

[foreman Etexas]

You can math out how much you are supposed to spray based on tips used and speed but because of inefficiencies and overlap you could wind up using a whle lot more. The narrower the sprayer, the worse the problem. I would guess a 10 ft sprayer would use 25% ? extra, or more. For example. My sprayer is 28 ft and I figure I use 15% more than I should because of unintentional overlap. And mine is only that small amount because I have low flow spray tips and watch my speed carefully. I spray at 15 PSI.

Here's a flow chart
http://www.teejet.com/media/a73d1d6c-9cdb-4123-bd8d-3b0a9d0bcaf5-CAT50-US_LoRes_p012.pdf
for the tips you probably have. It's the chart I use for my XR8003, which is the most common tip.


Excellent point on the "volatilize" comment post above. Very true and 24D keeps on being a problem long after it's sprayed. I wrote a post on this last year when I learned I had to wait 30 to 90 days after spraying before alfalfa seed would germinate. I had trees still showing stress till the end of the summer.

I will spray 2-4d(gotta wait for no wind and stay away from trees) but prefer to use Grazon p+d,I guess this year going to have to use GrazonNext. I'll have to do the math if it isnt them same,anyone have an idea?

 

[DennisH]

I took the advice of several people who posted here and calculated my output which came out to 12 gal for the area I was treating and went conservative on my mixture and used 1 Oz per gal. I ended up using 14 gal to treat my area.

I used the boom sprayer for about 3/4 of the area and the wand for the rest. Very pleased with the FIMCO LG40-3PT-12V I picked up at TSC, I could have got away with a trailer setup but I wanted a 3 PT setup to use with my JD 870.

Thanks again for all the great advice.

 

[foreman Etexas]

I took the advice of several people who posted here and calculated my output which came out to 12 gal for the area I was treating and went conservative on my mixture and used 1 Oz per gal. I ended up using 14 gal to treat my area.

I used the boom sprayer for about 3/4 of the area and the wand for the rest. Very pleased with the FIMCO LG40-3PT-12V I picked up at TSC, I could have got away with a trailer setup but I wanted a 3 PT setup to use with my JD 870.

Thanks again for all the great advice.

Nice that you atleast considered doing it as recommended,worst case you can up it alittle if it doesnt get it all this time. Im sure you will need to do several treatments anyways over time.:thumbsup:

 

[sixdogs]

Just be careful after things start to leaf out.
It really is the "gift" that keeps on giving.
Might want to switch from LV 2,4D to Amine 2,4D after buds open.