Cool. Well composed... except for that tree growing out of the tractor. I wouldn't be surprised at a tree growing out of an old abandoned bit of machinery, except I'm pretty sure it's just the composition in this case.
I like the rich, saturated colors. It really brings out the rust and textures of the tractor.
I do feel like there is a lot of empty space in the top right. There's just nothing there to see, and my eye ends to be lost in the emptiness. Perhaps you could either come in closer (to get more details on the tractor), or recompose to include the barn a bit more.