Translations:Benutzer:Arian/Klett-Mini-Test/1095/en

To summarize once more: where rock dusts of any kind are applied, this cannot be a matter of manuring — it is a substitution of given mineral deficits in the anorganic, dead realm of nature, whether on account of a one-sided mineral composition of the parent rock from which the soil formed, or as a result of deeply leached soils of advanced age. These are ailing soils, which can be treated and stimulated toward a new developmental dynamic through a comparatively modest substituting effort in combination with the actual manuring measures to be described in what follows. External nitrogen applications in salt form largely or wholly annihilate this subtle activity, borne by the life of the plant and of the soil. The consequence is that the earth-bound substances too, brought into readily soluble form and apportioned annually to the requirements of the respective crops, must be applied in ever greater quantities.