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I note that oil prices crashed 2.5 years ago and oil is needed for the Haber process to make fertilizer. Could that be a cause? I also note that high grain pri

• Robotbeat 9y ago
  No, not oil. The Haber process uses hydrogen. Which almost all comes from natural gas right now. (A note to clean hydrogen advocates: this is a much better market for hydrogen than burning it or converting to synthetic methane as it costs money to convert natural gas to hydrogen. Displace all that natural gas used for ammonia and nitrate fertilizer production before moving to burning it.)