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Translations:Benutzer:Arian/Klett-Mini-Test/1630/en
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The high silica content — 70% in the ash — shapes the rigid, ray-like appearance of the field horsetail. It makes it rough and brittle. The silica "lives" in the field horsetail in such a way "that it is entrenched there as in a fortress."[1]
- ↑ Rudolf Steiner: Geisteswissenschaftliche Grundlagen zum Gedeihen der Landwirtschaft, GA 327, Vortrag vom 11. Juni 1924, Dornach 1999, S. 83.
