Strange effect - the bright fence and the drab scene. The highlights on the pitch fork handle and the farmer's hat and shoulders seems to make that okay. The top feels a little cut off. If it were not cropped so tightly the farmer would be in the lower right power point of the composition (rule of thirds).
4 - Nice image and composition, toning works well. Perhaps a little more height framewise, not sure. For this Challenge, would like to have seen a stronger perspective/angle applied here 'somehow'.
Very nice black and white. Good balance and "perspective". Simple compositions like this really appeal to me. I do wish the horizon was a little straighter but that is a nitpicky thing to say :)