Weed Killer?

[guesswho]

I need something stronger than your typical Roundup.  I don't even care if the ground glows at night after I spray it.  What would y'all recommend for killing back brush, blackberries, grapevines ect.?  I'd like something that would last at least a year.   Any suggestions?

[HogBiologist]

24D if you can use it, Diquat (sp?) which is an aquatic herbicide that kills only the part of the plant it touches.  I am sure your local co-op will have something and a person who knows what to use.

[FANMAN]

http://www.agrisupply.com/pramitol-gal/p/61314/
This stuff kills and keeps on killing.I've used it on a gravel driveway..works for a longer time than Round-up.