Stolons of bermuda grass
Can the plants propagate from a broken piece of stolon or rhizome? I'm wondering if rototilling an area of dried bermuda grass to 6" depth would be enough to kill it so that we can plant seeds in the area. Thanks.
No this will not kill bermudagrass. Bermudagrass has indeterminate rhizomes deep in the soil. Tilling this will just bring these rhizomes to the surface and allow the bermudagrass to spread.
I think your best bet is to apply herbicide for management of this plant. Selective products that control bermudagrass in cool-season turf include Pylex and Turflon Ester. You will need repeated applications for long-term control.