a soil teeming with healthy life in the shape of abundant microﬂora and microfauna, will bear healthy plants, and these, when consumed by animals and man, will confer health on animals and man. But an infertile soil, that is, one lacking sufficient microbial, fungous, and other life, will pass on some form of deﬁciency to the plant, and such plant, in tum, will pass on some form of deﬁciency to animals and man.
The feature of manuring of the west is the use of artificial manures. The factories engaged during the Great War in the ﬁxation of atmospheric nitrogen for the manufacture of explosives had to find other markets, the use of nitrogenous fertilizers in agriculture increased, until today the majority of farmers and market gardeners base their manurial program on the cheapest forms of nitrogen (N), phosphorous (P), and potassium (K) on the market. What may be conveniently described as the NPK mentality dominates farming alike, in the experimental stations and in the countryside. Vested interests entrenched in time of national emergency, have gained a stranglehold.