It appears to be recently planted corn that is growing on this steep hillside. There are actually six people working on the mountainside field pictured here. In this made-to-post, low-res jpeg, they show up as little more than fuzzy specs. Above the left side of the house and a bit above the bottom of the stand of trees that extends towards the middle of the photo, there is a tiny red speck. That is the shirt of a farmer working in the field.