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This topic has come up in the past ranging from localized weed control to wiping all the vegetation over a larger area.
One poster suggested nitrogen or Urea ( fertilizer) as a preferable method for large area weed and vegetation killer .
Recently a friend mentioned that his wife uses these two for organic gardening weed control.
I'd never heard of that before
I have no experience with this but, you can get the solutions of 20% Acetic Acid ( Vinegar) from any horticultural supply And on line.
The stuff you buy in the grocery is only 6% solution.
The Citric Acid you can get pretty cheap from on line from all manner of sellers including E bay
I picked up 10# for $20.00 from this guy: stores.shop.ebay.com/DudaDie..._armrsZ1
I use citric acid i for passivating Stainless Steel and removing rust from steel and iron metal.
One poster suggested nitrogen or Urea ( fertilizer) as a preferable method for large area weed and vegetation killer .
Recently a friend mentioned that his wife uses these two for organic gardening weed control.
I'd never heard of that before
I have no experience with this but, you can get the solutions of 20% Acetic Acid ( Vinegar) from any horticultural supply And on line.
The stuff you buy in the grocery is only 6% solution.
The Citric Acid you can get pretty cheap from on line from all manner of sellers including E bay
I picked up 10# for $20.00 from this guy: stores.shop.ebay.com/DudaDie..._armrsZ1
I use citric acid i for passivating Stainless Steel and removing rust from steel and iron metal.
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Re: Vinegar and Citric Acid for Weed control
Thu, September 10, 2009 - 8:24 AMwhat kind of mix do you make for passivating?
The Citric Acid is in solid form right?
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Re: Vinegar and Citric Acid for Weed control
Thu, September 10, 2009 - 3:49 PMRust Removal and Passivation I do in the same way:
I dump some of the Citirc acid (in powder / granular form) into some warm- ish water.
I suppose it could be cold..
Then if I think I have enough I give it a stir.
Note the fine attention paid to measurements?
This is critical. Or maybe it's not.
Then I put whatever it is I'm de-rusting or passivating into the solution and walk away.
Unlike using Nitric Acid: I don't have to be on top of the mili-molarity of the solution or the temperature or the Time.
And when I'm done I can just dump it.
It's not fast but it is fine and gradual and easy on the metal.
In Steel it cause no additional pitting like Muriatic - which I use when I'm in a hurry and don't care about pitting.
But Muriatiac will flash off the passive chromic oxide layer on SST and cause rust. Once that rust sets in it's a bitch.
Citric will fix that.
There's a company called CitriSurf selling Citric solution for big bucks exactly for Passivating SST.
I can also Sharpen old Files in Citric acid solution.
That's the only time I pay attention to the details like time.
It makes 'em sharper than they were new.
Then a quick dip in Alcohol a towel dry and and a dip in Kero to displace any water the Alcohol left and it's good as new - better.
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Re: Vinegar and Citric Acid for Weed control
Thu, September 10, 2009 - 2:33 PMtechnique for rust removal with citric acid? -
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Re: Vinegar and Citric Acid for Weed control
Thu, September 10, 2009 - 3:52 PMsee above.
You can also use a potato for rust removal and yes it really works
Prolly the citric acid in the tater:
www.youtube.com/watch
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Re: Vinegar and Citric Acid for Weed control
Thu, September 10, 2009 - 7:36 PMalchemy is good stuff.... there may be science behind it. I think the acid eats away a few molecules at the thinnest points thus making sharp.
would Tang work as a citric acid powder? maybe cheap & available is just as good. -
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Re: Vinegar and Citric Acid for Weed control
Fri, September 11, 2009 - 3:32 PM**********alchemy is good stuff.... there may be science behind it. I think the acid eats away a few molecules at the thinnest points thus making sharp.*********************
Perzakly so
Tang? Heh Heh NASA to the rescue? -
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Re: Vinegar and Citric Acid for Weed control
Sat, September 12, 2009 - 8:56 AMQuestion to Schro-Cat as per the file trick >>
- amount of time immersed in citric solution for the sharpening to kick in?
- would a RealLemon -like product provide enough concentrated acid to do the trick?
- Is a cheap, easily available product containing some citric acid enough to do it ? or is a purpose formulated refined industrial strength citric acid concentrate called for ?
- are there other acids that may be equally effective? -
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Re: Vinegar and Citric Acid for Weed control
Sat, September 12, 2009 - 9:53 AM*******amount of time immersed in citric solution for the sharpening to kick in?*************
It'll vary with the molarity of the solution and temperature. Hear accelerates the reaction. I'm a big fan of watching the pot.
********* would a RealLemon -like product provide enough concentrated acid to do the trick?***********
Might. I've stripped rust from SST pots using bottled lemon juice and heat.
******** Is a cheap, easily available product containing some citric acid enough to do it ?********
Potatoes and lemon juice?
I've used juice and it worked with the application of heat, it was what convinced me to get the pure stuff.
********** or is a purpose formulated refined industrial strength citric acid concentrate called for ?
If you can get it it'll work better or faster or maybe both.
I think it's cheaper to buy the pure powder unless you have a lemon orchard.
**********- are there other acids that may be equally effective? ************
Effective? Well any acid will strip away metal and rust it's the degree and the sort of metal. Hydrochloric attacks the Chrome in SST so it's the wrong acid for that metal. -
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Re: Vinegar and Citric Acid for Weed control
Sun, September 13, 2009 - 8:59 AMNo but seriously, what kind of timeframe are we looking at here for the file sharpening agenda?
In the potato video it was 2 weeks to make it happen. That being the case, I'd need to do my files in 2 shifts so as to set a few aside for use while most of the others were under way.
I know it's not exact rocket science but I won't have all day to observe a bunch of files soaking.
I like the idea of leaving them to do their thing while I do mine. How long did it take you? -
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Re: Vinegar and Citric Acid for Weed control
Sun, September 13, 2009 - 9:32 AM**********No but seriously, what kind of timeframe are we looking at here for the file sharpening agenda?*********
I never keep track of things like that.
I suppose to do so and hope for a meaningful result would also mean I'd have to be paying very close attention to the Solution, the Time and Temp. Maybe even the water PH before I started.
And The Exact reason I defaulted to Citric was precisely BECAUSE it acts slowly enough that I can blow off all that crap and just dump some into a tank of water, in swish it around, get the de-rusting or passivating started.
I hardly know how many days I'm soaking much less how many hours. ERGO: I'm a big fan or watching the pot.
************In the potato video it was 2 weeks to make it happen. That being the case, I'd need to do my files in 2 shifts so as to set a few aside for use while most of the others were under way.************
Well are you using a potato, a jar of lemon juice, or citric acid powder?
I'd watch the pot.
************I know it's not exact rocket science but I won't have all day to observe a bunch of files soaking.**********
Then try one for half a day and check it out.
Pay attention to the solution, you will want to duplicate the strength.
***********I like the idea of leaving them to do their thing while I do mine. How long did it take you? ***********
More than an hour less than two days It depends on how l much citric acid I put in the water and the size if the container.
That's the problem I really pay absolutely no attention to these factors. Unless you are measuring everything very carefully time is a pointless thing to pay attention to.
Close attention to: PH, Temp, Time = predictable result
Ignore one, and your whole result is unpredictable.
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Re: Vinegar and Citric Acid for Weed control
Fri, September 11, 2009 - 7:20 AMTHANK YOU for the information. I spent 12 hours weeding last week and the weeds are returning. I need something stronger than just my hands, which are all bruised now. The weeds were so bad that I pulled a plug of fancy grass with an oak tree seedling! That weed was so deeply rooted in the grass that the whole thing came up with the weed itself.
Azeeza -
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Re: Vinegar and Citric Acid for Weed control
Thu, September 17, 2009 - 6:10 AMditto! thanks for the info!
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