Fifty years before the soil foodweb became in the 1990s, Pfeiffer was using microscopes, preparing microbial inoculants, making superior quality composts, teaching farmers how to employ biological farming practices to improve soil organic matter, soil structure, and soil fertility – which in modern times is known as “soil health” -- and conducting cutting edge research on soil fertility, soil biology, soil humus, and food quality.
Observations made on vegetable farms in New Jersey located on sandy soils, show that pH is not always a reliable indicator of the available calcium and that many of those sandy soils which have pH values of 6.0 to 6.6, where large applications of soda and potash have been made, may be very deficient in calcium and magnesium.
Many soils in the United States and Canada show a paucity of available calcium even though the pH reading seems satisfactory. A high pH does not necessarily indicate adequate calcium in the soil.
This valuable book went out of print years ago. It was revised and updated in 2013 and republished on the internet by the author.
How spreading aglime in far larger amounts than conventional ag science calls for greatly reduces the need for fertilizer and grows crops with much higher nutrient-density.
This is the story of how Tiedjens purchased an exhausted Ohio farm and proceeded to rehabilitate it, mostly with aglime.