The effect of small stones removal on the soils

Abstract

When soil is prepared by separating in accordance to Scottish technology with Grimme (Germany), Reekie (Scotland) or Kverneland (Norway) machinery, where during soil separation stones with the remaining clods are bulked in deeper technological tracks, soil densifying is avoided and the cost are minimal, but during the next year's soil preparation the stones are spread in the soils and this becomes a hindrance again. Seeking to minimise this hindrance, a sorters are equipped in the latest models of this machinery (whose are named a separators), by which the smallest fraction of stones is separated and bulked into technological tracks. The large stones gathered in the hopper of separator are delivered to headlands. The latter stones account for up to 20% of the total stones. Therefore in the coming year the soil stonisses slightly declines and stone removal is not finished completely. Furthermore, the stones left in the tracks are more difficult to remove later (Germanas, 1983; Bareišis, 1995).