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Agriculturalists once believed that plants literally “ate” the soil. But Justus von Liebig in the early nineteenth century planted the seed of radical change in the agriculture world. Among the discoveries backed by his chemical laboratory was the fact that plants merely extract certain substances from the soil, particularly nitrogen, phosphorus and potassium. From Liebig’s new theory there were several corollaries to be drawn, and the nineteenth-century assault on traditional agriculture was soon in full swing. They learned that if you added enough of the right chemicals, you could even grow a bumper crop in sand or a water solution. After World War II, the chemical industry rose to the challenge.

Chemical fertilizers alone were suddenly deemed essential ingredients of agriculture. No heed was paid any longer to the tilth, or physical quality, of the soil. If the corn isn’t growing just add more chemicals, they thought. But as more chemicals were added over the years, the organic quality of the soil was lost. Once rich, friable earth was turned into hardpan. The essential chemical ingredients were there, but high crop yields weren’t. Why did this happen? Because you can’t grow abundance on asphalt. Finally, in the past few decades, agriculturalists have rediscovered soil; good, natural, organic earth, the way it used to be, and the natural cycle that nourishes it. And with Natural Fertilizers.