Solved Killing White Bryony

I am trying to get rid of lots of clumps of white bryony.
Last year kept cutting it back hoping to weaken it - doesn't seem to work.
I dug out one piece a couple of weeks ago - it had 3 foot long parsnip looking root with a large turnip shaped lump about 10" below the surface.
Unfortunately due to where the bryony plants are growing its not going to be possible to dig them out without completely ruining the garden.
I have now discovered one plant photo attached - the white thing is a golf ball for an idea of size
Any ideas on how eradicate it without using a JCB

 

If you're prepared to use a weedkiller, a glyphosate-based weedkiller should do the trick.
Roundup is the standard choice available and should be sufficient, but a stronger form is available - anything with 'glyphosate 360' is the strongest form.

Be wary though, it is absorbed only through the leaves and will likely kill any plant that it lands on, so spray carefully on a calm day. It has no effect on the soil.

PS - it does take about 2 weeks to work. Faster if it's warm, a bit longer if it's cool.
Wait until the plant is obviously completely dead before removing.

 

Thank you
The big lump in the photo is part of the root system. I had wondered if it was worth drilling holes in it and pouring glyphosate into the holes?

 

No - it is absorbed only through the leaves.
So don't spray if rain is due within 6 hours.

Your suggestion can work if dealing with a tree stump, but doubt it would work on a little weed.
Just spray carefully - it's potent stuff and will kill most plants with a single spray.

Here are my before and after pics

 

Like the plastic bag idea Will try that on the smaller bits Thank you
Not sure if sbk can be used now or if it needs to be used in autumn.
Ecoplug Max Tree Stump Killer appears to be glyphosate plugs usable all year round hence the idea of drilling holes and adding glyphosate in the big lump

 

One trick I have used is to get a largish strong poly bag, stuff as much of the foliage as you can into the bag and add equal parts glyphosate 360 and water. Tie the neck and hang from a convenient point or stand in a bucket.
After a couple of weeks cut the stems above the bag and dispose of.
Repeat as required.

 

For weeds with inaccessible roots and other plants nearby, I have occasionally used a large fizzy drink bottle with the bottom cut off, pop it over the weed stuffing as much of the leaves as possible inside, spray through the bottle neck. The best were some 3l (I think) pepsi bottles that OH had once. For weeds with a lot of mature top growth, you can chop it off and wait for regrowth, then treat that while it's growing strongly.