Twitch Grass

Hi does anyone have any good ideas for getting rid of twitch grass?

When we first had the allotment 3 years ago there was twitch grass in it, but the person that had it before rotivated it so you can guess it was rampant. We have tried weed killer, everything, the best thing really has been me crawling on hands and knees burrowing and pulling it out by hand. In three years we have cleared about half the plot but we still get the odd bits sprouting and the other half to go. Just wondered if anyone had any fool proof ways.

Thanks

Jo n Neil

well I took over a plot about 18 months ago and two of the strips where covered in it, after an initial attempt at hand/digging I succumbed to using Glyphosate which did the trick more or less, killed everything stone dead. A bit of twitch did pop up here and there but just gave hoed it off and I seem to be winning, the occasional hand spray on bit thats not near veg is done also.  Another point to remember is that you can isolate it by digging a trench 12 inches deep against cleared land as twitch grass roots only grow about 3 or 3" below ground level so if you go below this it cannot spread, this was gleaned from a book, but it seems to work.