Translations:Benutzer:Arian/Klett-Mini-Test/1080/en

The sites, as regards their naturally given mineral balance, are in their endowments generally very different. On loess, alluvial land, glacial ground moraines, and on loam and clay soils of older geological origin, the mineral balance is, depending on the degree of erosion and weathering, reasonably well-equilibrated. On sites such as glacial sands, siliceous sandstones (Hauptbuntsandstein) or limestone (White Jurassic), abundance of one element is accompanied, sometimes, by complete absence of another. On older sandy soils it is mostly a deficit of metal bases — calcium, magnesium, and potassium — together with the so-called trace elements. On extremely shallow limestone sites, phosphorus is most often lacking. The deficiency that weighs most heavily on naturally disadvantaged sites is that of calcium, magnesium, potassium, and phosphorus. These deficient situations become still more precarious with the addition of nitrogen salts and necessarily draw after them the leaching of easily soluble mineral salts in increasing quantities.