Japanese Knotweed kits (cheaper injector on Ebay anygood?)

[Chasingmytail]

The full kits are over £400 which there is a lot of extras like box, gloves, funnel etc which you dont need to paying extra for.

Has anyone bought just the injector and bottle? Seems to be a couple of types on ebay The Greentech in fancy case is around £400 which is considerably steep. Alternatives Ive seen on youtube someone but the plant down and spray in an amount into the shoot. Obv I dont want glyosphate to grip into saplings or other plants.

These Ebay ones are £60 - £80 but do these work?

 

[steveR]

Get an old syringe with a short, large bore hypodermic needle. 50/50 Roundup in teh syring... Job's sorted. Wear long spraying gauntlets.

 

[onthehoof]

50 ml syringe and pair of secateurs

 

[davidroberts30]

Dont bother
Just get some forefront and spray the knotweed before it goes too big and woody

 

[Chasingmytail]

how much solution per stem. With these needles the hole is is in middle not end?

 

[Chasingmytail]

Dont bother
Just get some forefront and spray the knotweed before it goes too big and woody

This is growing around tree saplings I cant get it anywhere else plus the inj system is deemed to be more efficient.

 

[steveR]

how much solution per stem. With these needles the hole is is in middle not end?

Push the needle in to the centre of the stem. I just pushed the solution in until it came out...

 

[Chasingmytail]

how many ml per plant do you reckon?

 

[Y Fan Wen]

how much solution per stem. With these needles the hole is is in middle not end?

If you use a normal needle, it keeps blocking up with a plug of plant tissue. The ones with the hole in the side are used in the catering industry for injecting marinades deep into blocks of meat.

 

[milkloss]

https://thefarmingforum.co.uk/index.php?threads/japanese-knotweed.183340/

https://thefarmingforum.co.uk/index.php?threads/stem-injecting-knotweed.237992/

 

[Exfarmer]

Firstly, never use more than 10% solution then 1 ml per stem is plenty

 

[steveR]

This is growing around tree saplings I cant get it anywhere else plus the inj system is deemed to be more efficient.

How much have you got to do?

 

[steveR]

If you use a normal needle, it keeps blocking up with a plug of plant tissue. The ones with the hole in the side are used in the catering industry for injecting marinades deep into blocks of meat.

Have a second "blank" syringe and push the hole through if you are getting blocked needle. I didn't but was only doing 8-10 stems.

 

[glasshouse]

Dont bother
Just get some forefront and spray the knotweed before it goes too big and woody

That forefront is dynamite

 

[davidroberts30]

That forefront is dynamite

Especially if the weeds are caught early

 

[farmerm]

Needle will surely get plugged up all the time? I might be wrong but if I was spot treating stems I think I would have a sharp knife to take the top off the stem in one hand and treat with a squirt from a livestock drench gun held in the other. A suitable drench gun will only cost you £15. If exfarmer is correct saying max 10%, 1ml per stem I would probably mix it up at 2% and set the gun at 5mm. The none chemical option is mow mow mow. We had a jungle and I mean a real jungle of the stuff around a derelict cottage, 20 years after renovation we still get the odd plants appearing in unmown areas but it didn't survive long where we put down a the lawn.

 

[Longlowdog]

I did a clump two weeks ago with a cydectin 2ml injector and an old wormer bottle that had the same tube cap as the injector needed. I used a boggo 18g needle on well over 100 stems no problems. 2ml of neat 480 glyph injected in to the stem at about 20'' from the ground to avoid too much bending has worked a treat. I did the same to the other half of the patch last year and it has nuked it.
The grass and other weeds in the area are totally unaffected by the treatment.

 

[steveR]

One of the these for the OP?? A tad less than teh 400 quid job ;-)

https://www.bbqgourmet.co.uk/meat-i...th-5-x-25-inch-side-outlet-needles-4998-p.asp

 

[deleted user 837354]

As others have said, keep going at it and it will die.

 

[Grassman]

It's all a moneymaking scheme by those profiting from its existence. There are worse weeds to get on top of!