Will acid damage sprayer?

Geo-TH,In · Jul 30, 2021

Vinegar is an acid. Will vinegar damage a backpack sprayer or a sprayer with an electric pump?

Will vinegar mixed with roundup or 2 4 d create a chemical reaction?
Like mixing an acid with bleach? SV, Please ask Barney if this is dangerous.

I think the idea of using vinegar to kill grass and weeds in driveway isn't looking that good.

caterpillar guy · Jul 30, 2021

If you're using roundup why do you think you need the vinegar? And yes acid like even vinegar left in a sprayer will cause things to not work later by rusting or eroding things. If you want the roundup to work better use some surfactant and crop oil with a bit of ammonium sulfate. The AMS conditions the water the crop oil helps it stick to the plant. Not just sure what the surfactant does. And if you have to ask some of these questions you should probably not be using the chemical.

Matt in Oz · Jul 30, 2021

Hi George

Viegar is a weak acid. Given that the main thing with any acid is the concentration of the acid. If you are going to mix anything with a herbicide follow the label, can't emphasise that enough it is there for your safety. Using an acid to control weeds iIdon't think is a great idea, in ag we either manage soil acidity i.e plant plants that cn produce in the acid soil conditions or ameliorate it through application of ag lime to raise soil pH. So don't think this is a great idea.

Geo-TH,In · Jul 30, 2021

Why add vinager? I use blend of roundup and 2 4 d to kill weeds in driveway. Does a good job short term. Doesn't take long

And this week appears. Looking for a longer term solution..
Any long term solution?

Geo-TH,In · Jul 30, 2021

I'm not concerned with PH in driveway unless changing PH will kill weeds.

cjunrau · Jul 30, 2021

The only long term solution I have ever had a part of was a dirt sterilizer.
Not sure if it can even be bought anymore.
Down side of it was if it rained to much shortly after application it would run a bit into the lawn and kill some of it as well

Geo-TH,In · Jul 30, 2021

I need a gravel sanitizer.
I really could care if my driveway turns to a lawn.
The older the boss get the more OCB she becomes.
KIll the weeds in driveway, now she says the gravel needs freshened up?
FRESHENED UP, you got to be kidding. OCB>>>>>>>

fixerupper · Jul 30, 2021

What we need to add to a herbicide to make it more effective is an additive that breaks the surface tension of the water and herbicide mix. Adding a surfactant allows the herbicide to enter the pores of the plant easier. Dishwashing soap works OK as a surfactant in a small hand pump sprayer filled with herbicide. The PH of the water is important, we add ammonium sulphate to the water to neutralize it. Vinegar might lower the PH to a level that will make the herbicide less effective.

Old Ford Mechanic · Jul 30, 2021

Concrete?

MJMJ · Jul 30, 2021

Grass and weeds growing back after killing of existing grass and weeds doesn't have anything to do with the herbicide or whether surfactant was used. If the plants died, then it did it's job. Herbicides like glyphosate and 2,4D kill growing plants, they don't prevent existing seeds from sprouting. To do that you need to add some sort of soil sterilizer, and vinegar isn't going to do it. There are lots of herbicide mixes on the market that have the sterilizer already in the mix, like Roundup 365.

jm. · Jul 30, 2021

GEORGE Your long term solution for the gravel drive is a product called primatol, about 40 bucks for a gallon at your Rural King. Once sprayed on If you get a rain fairly quick it kills the ground and nothing will grow. I have good luck with it lasting in places 2 or 3 years. Cheaper and less effort than Round up over the long haul.

Dean · Jul 30, 2021

I spray my crushed stone areas multiple times each summer with generic Round UP. Weeds/grass die but seeds in ground will germinate after next rain (before if ground has enough moisture).

In years past when more actively involved with antique tractors, I would drain CACl solution from tires into containers and pour heavily onto crushed rock areas. Nothing would grow for three years or more.

With current gov regs, there is no longer any easy way.

Dean

Geo-TH,In · Jul 30, 2021

Jerry,
I going to RK this morning.
Thanks, I always appreciate your good advice.
How many oz per gallon do you use?
I like my 25 gallon pull behind boom sprayer, which I got from RK.

Geo-TH,In · Jul 30, 2021

X2. Only problem, concrete drive to house is added to property taxes. Even sidewalks and patios are taxed.

I have 100's of feet of zero taxed gravel driveways.

WESnIL · Jul 30, 2021

Keep in mind that if one gets heavy rains after the application of the herbicide, you stand the risk of the herbicide 'flowing' to the grass/lawn area and leaving streaks of killed grass. In my mind Primatol is best left to building sites, industrial sites, and the like.

WESnIL · Jul 30, 2021

For rate check the label. But good luck with that and the new labels. I much prefer mixing instructions as it relates to dilution rate, x ounces in y gallons of water. Labels prefer to mention rate as it relates to ounces per acre or some such area.

Geo-TH,In · Jul 30, 2021

Why??

Geo-TH,In · Jul 30, 2021

I want to know how many oz/gallon. Do you know he mix ? Killing grass next to driveway isn't an issue with me. It's the weed coming back is more of an issue.

M-MAN · Jul 30, 2021

Geo, it's going to be interesting to see what kind of contraption you come up with to polish your driveway gravel! You think outside the box and I enjoy reading them.

GordoSD · Jul 30, 2021

Then you have to compute your rate of application of the mixture. Usually that is given as gal/A.
Start with 10 gals with 1 QT of herbicide. That's a common formula for many herbicides.

flying belgian · Jul 30, 2021

The reason you are taxed on the concrete is because the value of your place goes up so that is a wash. If you can't afford to concrete the 100's of feet all at once just do some every year. Over time your weed problem goes away.

cityboy · Jul 30, 2021

(quoted from post at 05:03:27 07/30/21) I need a gravel sanitizer.

Get some water softener salt, the crystals not the pellets. Spread it on your driveway. Nothing will grow for many, many years.

FWIW,
Don

caterpillar guy · Jul 30, 2021

If you're having that much trouble with weeds in a gravel drive you are not driving on it enough. Mine don't grow weeds if I drive on it often enough.

wingnuttx · Jul 30, 2021

Concrete. Wingnut.

Ozlander · Jul 30, 2021

(quoted from post at 08:17:05 07/30/21) The reason you are taxed on the concrete is because the value of your place goes up so that is a wash. If you can't afford to concrete the 100's of feet all at once just do some every year. Over time your weed problem goes away.

With George's money, he could buy the concrete company and get free concrete.

This post was edited by Ozlander on 07/30/2021 at 09:02 am.

DoubleO7 · Jul 30, 2021

="Geo-TH,In"](reply to post at 09:30:48 07/30/21)

Whatever you decide to use, FOLLOW the use instructions included.

Do not follow what has been posted in this thread!

Geo-TH,In · Jul 30, 2021

All they say is one gallon treats 10,000 square foot. That a bunch of crap.
What's the mix ratio? Chemical to water?

grizz02 · Jul 30, 2021

Like you have been told spin your yard rake around and grade the gravel

MARK ROBKE · Jul 30, 2021

Round up is 4oz to the gallon in a small sprayer. DO NOT MIX AT A LOWER RATE. This causes weeds to have immunity to the spray. This a fact, well known; EG: using a lower rate has caused mare's tail(a bad weed in soy beans) to become resistant and now immune to round up. I have used round up(41%) ,not the home owner mix, on my driveway. Round up kills the living weed and grass by 'the root'. It does not kill seeds that sprout up. Pramitol sterilizes the soil and kills living weeds, but it can leach into surrounding areas where you don't want to kill anything. It has to be applied before a rain. I used it on my driveway(600') once this year but eventually (@ 2- 2 1/2mo) weeds grew back and I resprayed with round up because Pramitol is only supposed to be sprayed once in 12 months. I do not know why I did not have better luck with Pramitol, but with round up I have to spray more often.
I recommend you talk to your local extension agent. And whatever you do, spray at least at the recommended rate(s) on the labels. This is NOT THE PLACE TO BE CHEAP! I know it seems like you have to be a rocket scientist to understand the label, but if I can do it you can too. Seriously, your local extension agent should be very helpful with this, and in my experience, they like to be asked and to help Mark.

DoubleO7 · Jul 30, 2021

Pramitol is more of a bare ground herbicide.
It will burndown vegetation but applying to vegetation reduces the bare ground coverage.

JD Dave · Jul 30, 2021

Unless you're a chemist and understand the situation, I would NOT be mixing stuff with synthetic pesticides not specified on the label. Stay away from strong acids and alkalies in any mixes. And you know well and good not to mix ammonia with bleach, I hope! For cleaning go ahead and pickle the sprayer with vinegar as it's such a weak acid you have nothing to lose.

Crazy Horse · Jul 30, 2021

Doctor Jekyll started messing with stuff he was clueless about and you know what resulted ...... and Mr. Hyde was not a nice guy if I remember correctly. Frankenstein too resulted from just a little fun chemistry relating to spraying weeds. Like they say on the TV cop shows George, 'Be careful out there !!'

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