pot-cultures

Updated: May 31, 2025

Sometimes the clover crop is a complete failure on untreated land, while it lives and produces a good crop if the soil is properly treated; and in such cases the difference developed in the field is just as marked as in the pot-cultures. In general we may set it down as an absolute fact that the productive power of normal land depends primarily upon the ability of the soil to feed the crop.

Cyril G. (Cyril George) Hopkins - The Story of the Soil; from the Basis of Absolute Science and Real Life,