Contact spray

[tomlad]

Hi
Couldn't decide correct section sorry.
I have a otter fence around the fishery.
I now have maintenance issues with willow , Hawthorne growing thru the fence , possibly should have had grater clearance but it has to go somewhere.
A tree sergion mate swears he used to use a spray that killed any part of plant it was applyed , quite possibly not the whole plant , like roundup would try to .
Is there such a spray .
Obviously for me regularly nipping around about 1000 mtr of fence with knapsack spray is alot quicker than with hedge trimmer when i don't want to damage the wire .
I roundup the base area's 2 , 3 times a year .
My issue is stuff higher up .
Asked my usual spray man but he had no options.

 

[Kidds]

When Roundup first came out there will still a lot of galvanised tanks on sprayers.
Not for much longer! Roundup ruined them.
I don’t know if things have changed but I won’t spray Roundup on fence wire.

As for a contact herbicide, I doubt there is a legal way but an expensive option may be “Shark”. It may not even be available any more (it seems nothing else is).
Heat/flame gun may be a better option.

 

[Bury the Trash]

I hepave read your op,.....but ir you will ultimatly be best to let them grow through the fence enough to then be able to annually trim it without touching the wire. Will look good as well.

 

[Exfarmer]

When Roundup first came out there will still a lot of galvanised tanks on sprayers.
Not for much longer! Roundup ruined them.
I don’t know if things have changed but I won’t spray Roundup on fence wire.

As for a contact herbicide, I doubt there is a legal way but an expensive option may be “Shark”. It may not even be available any more (it seems nothing else is).
Heat/flame gun may be a better option.

Sorry but Roundup has no effect on zinc, it was an old wives tail.
Millions of miles of galvanised fencing has been been exposed to roundup with no ill effect

 

[Kidds]

Sorry but Roundup has no effect on zinc, it was an old wives tail.
Millions of miles of galvanised fencing has been been exposed to roundup with no ill effect

Google “does glyphosate harm galvanized steel”. Plenty of articles about it and enough for me to still not spray it on fence wire.

 

[Bury the Trash]

since you mentioned it

https://www.csppacific.co.nz/news-item/effect-of-weed-killer-on-galvanized-steel-columns[/U

 

[Exfarmer]

Google “does glyphosate harm galvanized steel”. Plenty of articles about it and enough for me to still not spray it on fence wire.

Sorry this is nonsense , there is not the slightest evidence that dilute glyphosate has any impact on galvanised steel nor that of 360 or other concentrate. We used tin , remember this, in our spray store, since the assurance inspectors did not like our pallets so we had tin sheets on top and had no evidence of corrosion from spillage

 

[Exfarmer]

since you mentioned it

https://www.csppacific.co.nz/news-item/effect-of-weed-killer-on-galvanized-steel-columns[/U

Roundup does not contain pelargonic acid although it is sometimes added to speed up weed control in certain situations, it is also used for weed control where Roundup is seen as undesirable

 

[Kidds]

since you mentioned it

https://www.csppacific.co.nz/news-item/effect-of-weed-killer-on-galvanized-steel-columns[/U

Your link was broken it’s

Effect of weed killer on galvanized steel columns - csppacific

www.csppacific.co.nz

 

[Bury the Trash]

Roundup does not contain pelargonic acid although it is sometimes added to speed up weed control in certain situations, it is also used for weed control where Roundup is seen as undesirable

my atv sprayer has a galvanised ' skirt' behind its boom , with the spray pattern drifting sligthly against it you can see the stained pattern on the galvanising , i only noticed it last year , its a few yrs old mind.
I only use glyphosate in it.

 

[tomlad]

My current ' roundup ' isnt roundup , ill check what brand it is .

 

[tomlad]

Mates advised product, was Paraquat ive checked.
Long since banned,??

 

[Kidds]

Mates advised product, was Paraquat ive checked.
Long since banned,??

Banned so long ago that it’s successor has been banned too now (diquaut)

 

[tomlad]

Lol
Guys bin muttering at me for few year 'just use Paraquat '
I'll enlighten him
May be my agronomist , telling me he has no options was right??
Possibly a case of if i don't like the answer I'll ask it to someone else because first ones obviously wrong ?????

 

[GeorgeK]

I think grazon will knock back the bits of willow and hawthorn it touches without killing the whole plant so long as it doesn't get too big a dose or too regular? I know when I've sprayed weeds and got some on the hawthorn it hasn't killed it, just loses the leaves that get hit. Plus it won't harm the grass so easy to just go down the fence and not make a mess. Obviously try a small area first

 

[deleted user 837354]

I would think shark might be worth trying but ultimately cutting stuff back would be better.

 

[Kidds]

I would think shark might be worth trying but ultimately cutting stuff back would be better.

I mentioned Shark earlier but I doubt there is anything on the label referring to spraying it up trees and hedges.
Very expensive too as I recall.

 

[tomlad]

I'll have another chat with my spray mon eh .
I guess i was asking because my tree sergion mate keeps muttering about this spray he used to use that would do just what I wanted, but obviously his time scale if off re Paraquat.
Not to say i don't believe my spray man but no harm having another opinion.
Best tools gonna be the chainsaw eh
I guess its like the best form of desilting a pond is a chainsaw.

 

[tomlad]

My current ' roundup ' isnt roundup , ill check what brand it is .

Its clinic up

 

[solo]

Creosote will scorch woody plants but I don’t know if it kills them. Certainly wouldn’t use near water though.