Weeds - kill them, ...
 

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[Closed] Weeds - kill them, kill them with fire?

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 IHN
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Has anyone got any experience of using those weedkilling flamethrower/blow torch wotsits? Any good? The drive and patio at IHN Towers need doing, and I'd like to avoid using chemical weedkillers.


 
Posted : 16/09/2019 2:34 pm
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Has anyone got any experience of using those weedkilling flamethrower/blow torch wotsits?

Yes. I have one.

Any good?

No.... Not really.

They only burn off the top growth. I use mine for getting rid of the dried up , dead weeds that i've already killed with glyphosate. It's more bother than it's worth if i'm honest.

The drive and patio at IHN Towers need doing, and I’d like to avoid using chemical weedkillers.

I'd recommend glyphosate. I'd like to avoid having weeds


 
Posted : 16/09/2019 2:38 pm
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Not had much success with fire either. We dig up as much as possible by hand but the stuff in the cracks in the path needs chemicals. You don't need to go crazy with the chemicals. A small amount on a dry day then leave it to work.


 
Posted : 16/09/2019 2:42 pm
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I’d recommend glyphosate. I’d like to avoid having weeds

+1


 
Posted : 16/09/2019 2:47 pm
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Partial to a bit of weedkilling here, but on the look out for new solutions. There's a hot debate about if glyphosate is carcinogenic with no conclusive evidence on either side....yet

Glyphosate


 
Posted : 16/09/2019 2:52 pm
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My dad had one and it worked well - and fun. Yes you might have to go back over the area a couple of times if they regrow but you will kill them.


 
Posted : 16/09/2019 2:54 pm
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Burners are OK, but need persistence. The thing to remember is not to burn the things, a quick flash is all it needs, if it goes brown or black you've over done them and it won't work as you just burn the surface.

I forget exactly how it's supposed to work but overheating them (without burning) prevents photosynthesis but encourages the plant to divert effort to regrowing/healing the burns which still won't photosynthesise so eventually it kills it. Actually burning the plant kills stuff and it just grows new carrying on as before.


 
Posted : 16/09/2019 2:57 pm
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The weedkillers work and they work well. Just use sparingly - i.e. trigger gun onto the leaves. Don't get it near your lawn, even to treat a weed in it, it will nuke the grass nearby, no matter how careful you are.

The flame throwers are far more fun.


 
Posted : 16/09/2019 2:58 pm
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They only burn off the top growth. I use mine for getting rid of the dried up , dead weeds that i’ve already killed with glyphosate. It’s more bother than it’s worth if i’m honest.

That's what I do too.

I use this stuff - they had it on offer at Aldi earlier this year, annoyingly about a week after I had bought a supply of it.

I have a block-paved driveway so I just mix it in the watering can and pour it on - a couple of weeks later and it's all died back.


 
Posted : 16/09/2019 3:00 pm
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There’s a hot debate about if glyphosate is carcinogenic with no conclusive evidence on either side….yet

Hmmm, there may be a hot debate but given how widely it's be used for decades it's pretty clear it doesn't cause cancer:

https://www.bbc.co.uk/programmes/p075mwd3


 
Posted : 16/09/2019 3:01 pm
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I use one, works well for me on tall weeds where you can burn the stem and they don't seem to come back as fast. Doesn't work so well for flat stuff like dandelions, I still use weedkiller on those.


 
Posted : 16/09/2019 3:01 pm
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Hmmm, there may be a hot debate but given how widely it’s be used for decades it’s pretty clear it doesn’t cause cancer:

The problem according to an arable farmer friend isnt the glyphosate itself, its the surfactants its mixed with to help it absorb into the leaves.

The trouble is the process to develop a new surfactant mixture would take years, and then decades to be approved by regulators.

So yea. Read the label and just use it. If you buy the commercial stuff by the gallon and dilute it into a sprayer (about 2/3 of a cup in 5l iirc) then its much weaker than the trigger sprays so doesnt have the same instant gratification but is more effective at being drawn down into the roots and killing the plant rather than the leaves.


 
Posted : 16/09/2019 3:22 pm
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actually OOB its now pretty clear it does. Whether it is carcinogenic in the doses a home gardner will get is a different thing but despite decades of biased "research" from monsanto its now clear it is carcinogenic ( but then so are a lot of things)


 
Posted : 16/09/2019 3:34 pm
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actually OOB its now pretty clear it does. Whether it is carcinogenic in the doses a home gardner will get is a different thing but despite decades of biased “research” from monsanto its now clear it is carcinogenic ( but then so are a lot of things)

I take your point, but people will have to listen to More or Less and make their own minds up.


 
Posted : 16/09/2019 3:45 pm
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Glyphosate (something like Rosate 36 is good) won't contaminate the soil and only affect the plants. It's better than roundup, as you can really bump up the dose for something like brambles/ground elder etc

if it's for a path/patio you're never going to plant anything then Ammonium Sulphamate is very good. Officially not used as a weedkiller anymore, but very effective. It will kill anything


 
Posted : 16/09/2019 4:06 pm
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I have an X300 Flamegun rusting in the shed.
I get it out when I cant keep up with the weeds in the gravel drive.
Makes a terrific noise and smell and costs about £7/hour to run or whatever the going rate is for paraffin is at the time.
You are supposed to go over it twice once to stop the weeds growing and the second time to burn off the remains.
I prefer hand weeding.


 
Posted : 16/09/2019 4:07 pm
 IHN
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Burners are OK, but need persistence. The thing to remember is not to burn the things, a quick flash is all it needs, if it goes brown or black you’ve over done them and it won’t work as you just burn the surface.

This is what I've read, ta.


 
Posted : 16/09/2019 4:08 pm
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@mariner. That's the ticket. Something that makes a noise like a Vulcan at full chat and has the potential for serious (manly) damage is the STW way. Everything else is just messing about.


 
Posted : 16/09/2019 4:14 pm
 IHN
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I've just had a Google about Ammonium Sulphamate, interesting...


 
Posted : 16/09/2019 4:35 pm
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Have you tried a good old fashioned hoe?
Or just dig them up.
I sometimes get brambles coming from next doors ecosystem ,I just cut it back.


 
Posted : 16/09/2019 4:37 pm
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I’ve just had a Google about Ammonium Sulphamate, interesting

It had 0 impact on my allotment, I'll be sticking with glyphosate.


 
Posted : 16/09/2019 4:40 pm
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Have you tried a good old fashioned hoe?

Aye but what about the weeds? 😉 I tried one of those once, the Wife threatened to chuck me out if there was a repeat performance...


 
Posted : 16/09/2019 4:43 pm
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Loads of cheap table salt in watering can and water as long as you don’t want anything to grow there again.


 
Posted : 16/09/2019 5:56 pm
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I used ammonium sulphamate on the mare's tail (and dug it out) on an allotment I took over. I gave it up 3 years ago and the mare's tail hasn't reappeared, seems pretty efficacious to me.


 
Posted : 16/09/2019 6:06 pm
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We are 5 years into pulling up weeds in our larger garden.

It's a slow process, but we are now seeing a huge reduction in the numbers of weeds we see.

I have used a bit of weed killer, but I really don't like the environmental effects.

The garden had been ignored for 12 years before we got it - and my father reminds me it takes twice as long to get rid of weeds...


 
Posted : 16/09/2019 6:11 pm
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Napalm?  Also sterilised the top 6 inches of soil so nothing can grow back.

I keep trying to persuade work to use it, but the ecologists don't seem too keen on the idea for some reason.


 
Posted : 16/09/2019 7:13 pm
 Jamz
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Good source of info on glyphosate here:

Pesticide Action Network UK


 
Posted : 16/09/2019 7:22 pm
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Whether fire works or not it’s bloody good fun pretending you’re Ripley. I have a block paving (hateful stuff) driveway and patio. What’s the STW recommendation for killing the weeds? I have two young kids and want to avoid weed killer. Never going to grow anything in the space, so complete devastation is a possibility.


 
Posted : 16/09/2019 7:30 pm
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its now clear it is carcinogenic ( but then so are a lot of things)

Including the fumes from a flame thrower.


 
Posted : 16/09/2019 7:48 pm
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Electric weed burner FTW


 
Posted : 16/09/2019 8:34 pm
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Matt, What environmental effects?


 
Posted : 16/09/2019 9:22 pm
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 nofx
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White vinegar with loads of salt in kills them off. It's less than a fiver a gallon. I'm going to be doing the top end of the garden to get rid of the bind weed (hopefully).


 
Posted : 16/09/2019 9:35 pm
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Why have you got weeds in your patio, does it need repointing? Shouldn’t be anywhere for them to grow.and what’s the drive made of?


 
Posted : 16/09/2019 9:37 pm
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Let's grass grow fine, kills weeds. Birds too probably.

May not be economic to import though.

[url= https://i.postimg.cc/dV2GZWWp/http-cdn-cnn-com-cnnnext-dam-assets-190913153757-comedy-wildli.jp g" target="_blank">https://i.postimg.cc/dV2GZWWp/http-cdn-cnn-com-cnnnext-dam-assets-190913153757-comedy-wildli.jp g"/> [/img][/url]


 
Posted : 16/09/2019 9:54 pm
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Why have you got weeds in your patio, does it need repointing? Shouldn’t be anywhere for them to grow.and what’s the drive made of?

Well, the off-site car storage area at work is an old industrial site that recently had extensive areas ripped up and new reinforced concrete laid down. There are large numbers of weeds of various types happily growing in the joints between the new sections.
There really shouldn’t be anywhere for anything to grow, but it is.


 
Posted : 16/09/2019 11:01 pm
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+1 for vinegar I know a couple of professional gardeners that use it. They say use it when its not going to rain.


 
Posted : 17/09/2019 12:46 am
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I tried the vinegar, salt and washing up liquid mix with some success. Then I found just salt works best, sprinkle it on and it soon gets washed into the soil. Costs nothing, a 25kg bag was 4e from the cash and carry.
Apparently sterilized the soiled so make sure it does not run into your lawn, or neighbours garden.


 
Posted : 17/09/2019 7:07 am
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+1 for vinegar I know a couple of professional gardeners that use it. They say use it when its not going to rain.

There have been trials of concentrated ethanoic acid as a substitute for glyphosate, but it hasn't proven to be terribly successful. There are also H&S problems (it burns skin) and it smells.


 
Posted : 17/09/2019 1:27 pm
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I love this, some people don't want to use licenced, tested, type approved, targeted chemicals because, erm, they're chemicals but are quite happy to chuck copious amounts of non regulated chemicals around which are persistent, much worse for the local environment, probably in much higher quantities than are required. If a commercial gardener used any o these things to kill weeds they'd be prosecuted.


 
Posted : 17/09/2019 4:45 pm
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I saw the results of someone using a burner last week. They also set fire to their hedge & next doors car causing significant heat damage to double glazed windows & guttering.


 
Posted : 17/09/2019 9:02 pm
 myti
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Just use gylphostate. Lots of things we use all the time are much more cancerous. Booze, bacon or sunshine anyone? Please don't tip homemade concoctions around our environment. High salt levels will kill more than just weeds.


 
Posted : 17/09/2019 9:42 pm
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What can I use on weeds that won’t kill grass?


 
Posted : 18/09/2019 8:11 pm
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roundup / glyphosphate is very damaging to the environment., builds up in the ground, is a known carcinogen and mutagen. Please avoid it out of respect for the environment.

Monsanto its makers have spent decades funding "research" and suppressing any evidence of ill effects from it. corrupt organisation pushing nasty pollutants

https://www.scientificamerican.com/article/weed-whacking-herbicide-p/


 
Posted : 18/09/2019 8:17 pm
 myti
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It doesn't build up in the ground if it did then new plants and weeds wouldn't grow in soil sprayed with it. They do. It actually breaks down very quickly. It is showing up in the food chain/water due to incorrect or ocer use and whilst i don't think it should be widely used in agriculture as it currently is there is no risk to human or insect if used correctly to kill a few weeds in a driveway. The hysteria around gylphostate in particular is ridiculous and could cause more damage to the environment as if it gets banned other less well tested and harsher chemicals will be employed instead.


 
Posted : 18/09/2019 8:25 pm
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What can I use on weeds that won’t kill grass?

This stuff. Follow the instructions to the letter and it will perform witchcraft.

[img] [/img]

(Your guess is as good as mine as to why I took a picture instead of just sending an Amazon link)


 
Posted : 18/09/2019 8:31 pm
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TJ, care to substantiate that scare mongering and big business conspiracy theory?

Weed killers have an important place in horticulture, glyphosate is pretty benign compared to the previous generation of persistent and genuinely nasty chemicals.


 
Posted : 18/09/2019 8:56 pm
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What can I use on weeds that won’t kill grass?

Weedol (which is glyphosphate).

Only kills broad leaf plants not grass.


 
Posted : 18/09/2019 9:06 pm
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Weedol is MCPA not glyphosate. Glyphosate is particularly good at killing grass.


 
Posted : 18/09/2019 9:09 pm
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Weedol is MCPA not glyphosate. Glyphosate is particularly good at killing grass.

Thanks, you're right. That could have been an unfortunate misconception to have been left with!


 
Posted : 18/09/2019 9:37 pm
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roundup / glyphosphate is very damaging to the environment., builds up in the ground, is a known carcinogen and mutagen. Please avoid it out of respect for the environment.

Not really, but regardless, advocating salt, burners etc is hardly good for the environment either.


 
Posted : 18/09/2019 9:46 pm
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stumpyjohn - its all out there. start with the article linked to. Look into the supposed research by scientists paid by monsanto look into the suppression of data that shows harm. I'll have a further dig but its hard to find stuff that would satisfy you as the data that shows harm is supressed.

Myti - there are proven risk to roundup - its NOT safe. It may be less nasty that previous generations of weedkiller but it is both a carcinogen and a mutogen.


 
Posted : 18/09/2019 9:48 pm
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In the present case, the jury was undoubtedly influenced by information that came to light about Monsanto having known, but not having revealed, that glyphosate in huge doses may cause cancer in mice. The company claims that there was no need to publicize this because the information is not relevant to humans. Monsanto also shot itself in the foot by sponsoring some overzealous ghost-written articles about the safety of glyphosate.

https://mcgill.ca/oss/article/environment/glyphosate-trial

Decent source?

In fact, these documents were released in part to aid the efforts of the European regulators and the California Office of Health Hazard Assessment, as they weighed evidence regarding glyphosate registration/classification. The damning tale that these documents tell over how Monsanto has handled the issues over the ostensible safety of its widely-used product will provide regulators across the globe with access to key information that should inform their vital decision-making processes. We sincerely believe that it is imperative for the litigation process to be as transparent and open to public scrutiny as possible, particularly since every aspect of this case has repercussions for society as a whole.

https://www.baumhedlundlaw.com/toxic-tort-law/monsanto-roundup-lawsuit/monsanto-secret-documents/

Aggain seems a decent source. found quite a few papers in peer reviewed journals about harm caused by glyphosphate

Plenty of other data out there showing evidence of harm and plenty of monsanto paying researchers and only publishing favorable results while supressing unfavourable ones by not publishing

Also shed loads of terribly dubious sites with all sorts of hysterical stuff


 
Posted : 18/09/2019 10:02 pm
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This is also pretty damning about the unethical practices

Monsanto officials were repeatedly worried about the release of documents on their financial relationships with scientists that could support the allegations they were “covering up unflattering research”.

https://www.theguardian.com/business/2019/aug/07/monsanto-fusion-center-journalists-roundup-neil-young


 
Posted : 18/09/2019 10:04 pm
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The monitoring of glyphosate levels in food and in human urine and blood has been inadequate. The common practice of desiccation and/or ripening with glyphosate right before the harvest ensures that glyphosate residues are present in our food supply. It is plausible that the recent sharp increase of kidney failure in agricultural workers is tied to glyphosate exposure. We urge governments globally to reexamine their policy towards glyphosate and to introduce new legislation that would restrict its usage.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3945755/


 
Posted : 18/09/2019 10:05 pm
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Newly released court documents in a federal lawsuit suggest Monsanto planned to ghostwrite a positive report on glyphosate and get experts to back it up.

An scientist wrote in an email “...we would be keeping the cost down by us doing the writing and they would just edit & sign their names.”

https://www.cbsnews.com/news/lawsuit-accuses-monsanto-of-manipulating-research-to-hide-roundup-dangers/


 
Posted : 18/09/2019 10:07 pm
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Or, for those who trust "More or Less", here's their debunking of the cancer risk here:

https://www.bbc.co.uk/programmes/p075mwd3


 
Posted : 18/09/2019 10:11 pm
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Maybe we should do an experiment. I will drink some vinegar and you can drink some.... whatever you are advocating.

I just found this that looks like a good read but not got time now as it is very long. Looks legit though.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3945755/
Perhaps the customer of the gardener I met asked them to use the vinegar instead of alternatives for any number of good reasons. He should be struck off the gardeners register.


 
Posted : 18/09/2019 10:19 pm
 myti
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Tj. Lots of substances have been proven much more strongly to be linked to cancer than glyphosate and we actually eat those. Get some perspective.


 
Posted : 19/09/2019 7:39 pm
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myti - just responding to you saying its perfectly safe. Its not. Shure its better than some weedkillers but given its a known carcinogen and mutagen and given that monsanto has done its best to distort and suppress evidence of harm so we really do not know how harmful then if you have a choice of using it or not then not seems to me to be the safer route

The less carcinogens in the environment the better surely?


 
Posted : 19/09/2019 7:50 pm
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Well myti's comments clearly went over TJ's head, it's not black and white, many things are carcinogenic, Devon for example, maybe we should granite as well.


 
Posted : 19/09/2019 8:46 pm
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No it didn't. My premise is simple Why introduce a known carcinogen into your garden with no need? Yes there are other carcinogens out there but two wrongs do not make a right


 
Posted : 19/09/2019 8:48 pm
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Because if you want properly kill the weeds you need to kill the roots as well, the function of killing the weeds highly out ranked the tiny alleged carcinogenic potential. It's also a lot more environmentally friendly than burning fossil fuel in a weed gun or chucking around nasty persistent chemicals that have affects way beyond killing a few weeds. Vinegar is potentially carcinogenic and salt is toxic in high doses.


 
Posted : 19/09/2019 10:03 pm
 mc
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I've got to laugh at the accuracy of that PANUK page linked to. GM crops are not common place in the UK, and use of Glyphosate as a desiccant is rare for grain crops. And why do they keep mentioning/linking to pesticide research for a herbicide?

I do agree the use of chemicals should be minimised, but I don't belief any specific ones should be banned outright unless there is an effective and safer alternative. Which in the case of weedkillers, there is nothing as effective and as safe as Glyphosate.
To put it in context for short term health, a glass of industrial* strength glyphosate is less poisonous for humans than an equivalent glass of salt. It might make you violently sick, but it's less likely to kill you. Long term effects as for nearly everything, are always open to interpretation, as you can't really isolate a singular cause over the long term.

For those interested, the previous options were far more lethal. Gromoxyn was a popular weedkiller pre-glyphosate, but farmers were known to have died because they failed to wash their hands well enough after handling it, then ate something with their hands. And that's before you considered the damage it would do to wildlife.

As somebody who grew up on a small holding producing soft fruit, I know the impacts of chemicals, and also the major benefits. There are still chemicals available which are known to cause far more issues than glyphosate ever will, but without those chemicals, food production could quite realistically be destroyed. I actually despise spraying for the sake of what if (insert improbable pest/disease of choice, because you're too lazy to regularly check for pest/diseases), but it's far better to use something not 100% safe than lose an entire crop. Take strawberries for example, you can quite happily grow them 90% of the time without any chemicals, however there are diseases/pests which will wipe out entire fields within days unless controlled. And I'm not talking just losing a single crop, you're talking losing the entire plants, and then those fields potentially be unusable for several years unless treated.
And in case you're wondering how organic growers handle the problem, they'll spray then sell the fruit as non-organic. Most organic standards have special dispensation options available to use chemicals as a case of last resort for serious problems where chemical use is the only realistic way of controlling the problem.

*Anything the public can buy in the EU, is certainly not industrial strength. 5 litres from an agricultural chemical supplier will easily fill an agricultural sprayer.

As for the original question. If you really want the environmentally friendly option, get an old fashioned push hoe with a T head and T handle (the handle's the key bit to minimise blisters!). This is the first picture google found - https://www.dewit.eu/en/products/long-handled-tools/push-and-pull-hoe-ash-handle-1400mm
Far better than dutch/pull hoes, and with the right technique, it'll quickly slice weeds off flush with slabs, and even work on gravel. Just make sure you do it on a nice sunny day, so even anything not 100% sliced off will get dried of quickly.
They were always my dad's preferred weed remover, as they're far more versatile than other hoes for weed removal.


 
Posted : 19/09/2019 10:07 pm
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Maybe we should do an experiment. I will drink some vinegar

If you tried drinking the commercial stuff you'd burn through your throat.


 
Posted : 19/09/2019 10:36 pm