Rock Picker machines can go by a few names such as Stone Collectors or Soil-Cleaning machines, but they all do one thing: remove stones and other unevenness from the soil and improve your pasture. Madara Agro Rock Picking machines promote the cleaning of soil, thus increasing its homogeneity, mainly by stones and other unevenness caused by random pieces of bricks, tiles, tree roots, pieces of plastic, and the like.