I tried cropping every which way, nothing really worked other than kind of a vanishing point crop, where the tree is the center of the top of the crop, and you show the converging lines of the harvested field gowing towards it. Although the small patch of green does ruin that cop a bit too.
A horizontal crop taking out most of the harvested field and giving a pano effect was ok, kind of making a statement on the loneliness of the tree, but the other trees are too far back to really give that effect justice and came out kind of boring, black and white improved that a bit, along with some noise and increased contrast.