Yara's Crop Nutrition podcast · Yara

Ashes to Agriculture: The Ancient Roots of Potash

·47 min·2 clips
The first potash mine opened in Stassfurt, Germany in 1861 - the potash in the earth's crust comes from ancient oceans that evaporated and left behind salts buried 2,000 feet underground.
Dr. David Ciceri and Dr. Rob Mickelson trace the 3,000-year history of potash from Bronze Age wood-ash extraction through the first German mine in 1861 to modern Canadian production. The episode covers how von Liebig connected mineral nutrition to plant health, how World War I disrupted global potash supply, and emerging research into extracting potassium from insoluble silicate minerals to address global accessibility gaps.

As heard by us

A grounded look at potash that ties chemistry, geology, and farm supply together.

This episode treats potash as more than a commodity. Dr. David Ciceri and Rob Mickelson walk through where potassium salts come from, how brines and solution mining work, and why wartime supply shocks pushed North America to look harder at its own sources.

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Why you'd press play

You want the backstory behind how potash sources were found and extracted.

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