Planning a project near Moyobamba, Peru. Elevation 900m. Most of the properties are failing cow pastures in clearcuts with pretty tough tropical grasses forming a complete groundcover. How would you go about replacing the grass with food forest/ rainforest without grass getting in the way? Specifically, what earthworks or tractor implement(s) should be applied? I assume this needs to immediately be followed up by mass plantings of cover crop seeds, groundcover starts, shrubs and tree saplings.