I have a smaller backhoe than you would get on a DK55, and I've used it for your jobs as well as many others. Yes, you can use a backhoe to dig out old fence and brush, etc. But you can also hook chain, or nylon rope around much of it and pull it out with a tractor that size.
I don't know how much fencerow you're needing to eliminate, it could take a while. As MikePA stated, you may want to rent a dozer or the like if you feel that this fencerow thing is going to be the only need for a backhoe, but in my case, I use mine a lot.
My backhoe was back ordered when I first bought my tractor, and I pulled a lot of saplings and vines out of my fences with chains attached to the drawbar. It was a lot of on and off the tractor kind of stuff and took quite a while, but did the job admirably.
For lighter work, a toothbar on the loader can also do a lot of clearing of that type of material, but if it's old growth stuff with a lot of roots, it may not be appropriate to use the loader. You'd be surprised how much you can get out by first pushing over the fencerow and then digging at the roots with the toothbar.
John
I don't know how much fencerow you're needing to eliminate, it could take a while. As MikePA stated, you may want to rent a dozer or the like if you feel that this fencerow thing is going to be the only need for a backhoe, but in my case, I use mine a lot.
My backhoe was back ordered when I first bought my tractor, and I pulled a lot of saplings and vines out of my fences with chains attached to the drawbar. It was a lot of on and off the tractor kind of stuff and took quite a while, but did the job admirably.
For lighter work, a toothbar on the loader can also do a lot of clearing of that type of material, but if it's old growth stuff with a lot of roots, it may not be appropriate to use the loader. You'd be surprised how much you can get out by first pushing over the fencerow and then digging at the roots with the toothbar.
John