Entwicklung der Grundnährstoffgehalte und des pH-Wertes im Boden nach 10-jähriger Bewirtschaftung nach den Richtlinien des ökologischen Landbaus

摘要

The following paper shows the impact of organic farming on the development of contents of phosphorus, potassium, magnesium and pH in the soil. The basis is a six-year crop rotation with animal manures (ca. 85 dt/ha/a) in the location of Gül-zow (Mecklenburg-Prepomerania). From 1993 to 2003 samples of soil were taken with aa soil auger in a depth between 0 and 30 cm. The discussion of changes in the nutrient contents are connected with nutrient balances. As a re-sult, organic farming does notnot lead to lower nutrient contents in soil. Only the content of potassium shows a decreasing tendency. The pH is atat a high level and the content of magnesium increases a little. ud--ud(Sprache des Volltextes: Deutsch)ud