It grew a beautiful stand of Williams Hybrids and I cut 2 crops before selling the lease and the guy who bought it kept the bananas going for 5 more years until he switched to running a nursery on the next farm. Last time I looked from a lookout on Tomewin Rd 20 years ago it had returned to regrowth. I don't know what's happened since because the lookouts on Tomewin Road have been blocked by tall trees growing in front of them.
Roundup absolutely goes inert on contact with the soil otherwise it would be more expensive and it would be called a pre-emergent herbicide.
