The Winter’s Tale

Doug Soldat has photos showing more snow mold where potassium fertilizer was applied. Where potassium was not applied, there is less snow mold.

This photo, starting in the top right plot with the lowest amount of snow mold, and going clockwise, is:

  • top right, no K for six years
  • bottom right, no K for six years but high K added from August to October 2016
  • bottom left, high K for six years
  • top left, high K for six years but no K after August 2016.

This used to be surprising. I don’t think anyone expected more K to lead to more disease. But after Doug has seen this year after year, it’s not a surprise anymore.

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