Back breaking work, thats why I don't have one. Just a little more contrast would improve the quality of your picture, and if the baren three rows were cropped out, bringing the gardener and the tiller more into play it would be super. Good eye. 6
Nice to see someone gardening!! IMHO, I would have liked to seen this as a portrait, seeing the rows of plants leading up to the gardener would have visually been stronger.
Lowering the camera down to get less of the tree line, and more of the rows - which would then lead your eye to the gardener would make a terrific photo! You have the right idea! The lighting on this is good, it just loses something in the way it is composed.