Hello Stoneleigh,

Future climate change and the myth of Canadian water could have dire repercussions in Potash of Saskatchewan's future output as their benefication process requires lots of water. This could have worldwide ramifications if insufficient quantities of element K cannot be combined with N & P for efficient photosynthesis.

http://www.iied.org/mmsd/mmsd_pdfs/065_ifa.pdf
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Environmental Considerations in Potash Mining and Processing

Potash mining activities may affect the quality of air, water, and land. The beneficiation of potash ores normally results in large volumes of waste materials including brines, slimes containing clay, and salt tailings.

The disposal methods most frequently used include:

• Stacking of salt tailings on the surface.
• Retention of wastes such as brines and slimes in dams or ponds.
• Controlled release of wastes from lined retention ponds into rivers and oceans.
• Backfilling of mined underground openings with salt tailings and fines.
• Deep well injection of brines.
• Recovery of other mineral by-products
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The gradual depletion of hydropower from climate change drought, plus area FF-depletion, plus less water for solution mining and factory beneficiation, plus more energy & equipment to further extend the 3300 ft deep and 5,000 km web of tunnels = much higher costs to produce and process potash.

Bob Shaw in Phx,Az Are Humans Smarter than Yeast?