Plowing & Tilling To Improve Soil in 3 Different Areas

We used both tractors today (the Kubota L3901 and the Farmtrac 60) to plow and till a couple areas of the property. First is an area where subsoil was excavated for a road-building project. We're trying to repair that area for future planting. Next is an area we've had cover crops planted and we'll plant christmas trees on it. Lastly is an area where many christmas trees have dies and we're going to plant several rotations of cover crop to improve the soil.