loamy soil that is rich in man's hands and has iconic technology about soil nutrients that are essential to cultivation

agriculture backdrop background boron brimstone brown calcium chlorine close closeup concept cultivated cultivation detail dirt dry dust earth ecology environment environmental essential farm field fresh garden gardening ground growth grunge hands humus iconic land life loamy magnesium man's manganese molibinum mud natural nature nitrogen nutrients old organic pattern phosphorus plant planting potassium rich rough soil space surface technology texture top view wet