Synopses & Reviews
Synopsis
Excerpt from Plant Food; Its Nature, Composition and Most Profitable Use: Prepared to Aid Practical Farmers
German agricultural chemist Justus von Liebig we owe the following four elementary laws, which are the foundation of the best modern practice.
I. A soil can be termed fertile only when it contains all the materials necessary for the nutrition of plants. In the required quantity, in the proper form.
II. With every crop a portion of these ingredients is removed. A part of this is again added from the inexhaustible store of the atmosphere another part, however, is lost forever if not replaced by man.
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