You might want to straighten that horizon and yes, after that crop out the fence. And then work a little on the curves or levels. There's more in here!
I ask myself (& others) the very same question about some of my shots from time to time. It's no as easy as you would think getting the right balance, particularly in a scene like this whcih is all about colour / contrast.
I agree with the previous post that the shot would work better with some cropping. Personally I would crop about a third of the way down the fenceposts & then clone out the rest of the posts - this should give the shot a nice balance