Translations:Benutzer:Arian/Klett-Mini-Test/892/en

of a several-year main fodder crop, is thrown downward into the furrow ahead of the skimmer. With the two-layer plough one seeks to counteract the burying of the topsoil rich in nutritive humus. Over the winding of the mouldboard, subsoil rich in clay, silt, and fine sand reaches the surface and forms the furrow crest. Its mineral constituents are thereby directly and immediately exposed to the crystal-forming forces of the cosmos in winter, as well as to frost-shattering and, in the following year, to the forces of weathering. As inorganic material is raised up in measure, it comes under the enlivening influence of the forces of the metabolic pole. Deep tillage or clay working mixes and chaotizes in the vertical. It rejuvenates the soil, drawing up from the depth what has been displaced downward in microerosion by percolating water as finest clay particles.