Polysulphate Premium


Polysulphate® Premium

Increases Yield - Improves Grain Quality - Saves on seed mortality

Polysulphate® Premium is derived from polyhalite, a naturally-occurring mineral, which contains elements essential to high-performance plant growth and functionK2Ca2Mg(SO4)4 • 2H2O

Polysulphate nutrient chard show sulfate, potassium, magnesium and calcium sulfate.


Guaranteed Minimum Analysis

Guaranteed Analysis




Potassium (K2O)




Magnesium (Mg)

Calcium (Ca)



Polysulphate Application Rate:

100-150lbs/acre on average, depending on crop


Pea root Tip interaction with poysulphate

canola root touching a polysulphate granule

Benefits of Polysulphate:

  • Low Salt-Low salt index with no negative loss of seed compared to S and K in the seed row (tested up to 300 Ibs of product in the seed row).

Assume a 15-20% increase in seed survivability which could equate to $15/20 acre for canola.  Assume 100 Ibs of product an acre could work out to just over $30/acre for Polysulphate® Premium and we save more seed. It reduces the overall per acre cost dramatically. Even at $15/acre in seed saving cost, on 22 acres of Polysulphate® Premium applied at 100 Ibs/acre, that is $330 saved for every tonne of Polysulphate® Premium used.

  • Season long feeding of these essential nutrients for 60 days-

Better uptake to demand curves and better finishing of our core crops that need both S and K for filling grain and canola seeds.Assume increases in yield and better quality.

  • Storage- One bin, multiple products – better management of storage. More storage, less fills to fits today’s logistical needs. Bulk density is high (85 Ibs) as such one bin or one tank on a grain cart holds twice the tonnes.
  • No Nitrogen-

Which increases seed safety in seed row and allows alternative sources with higher N percentage to be used instead.

  • Only prilled potassium source in Western Canada

Most growers hate how KCL tears up their air seeder hoses.

  • Great handling product with low salt index and is not as hydroscopic as AMS and KCL.
  • Fits today’s market demands of sustainable solutions that make the soil better, crop production better, and increase in nutrient use efficiency which makes the environment better.
  • Organic Certified
    Polysulphate® Premium is registered through OMRI as organic around the world but fits conventional growers just as well, meaning it fits growers for today and ten years from now.


  • Efficiency on K and S will improve 25-35% with season long feeding over 60 days vs. all available up front and tie up by day 20.
  • Very low salt index will reduce stress on early plants making them healthier early, which allows them to pick up more nutrients and not delay maturity.
  • Higher plant stand counts in cereals which means more main stems.
  • Expect upside in yield with season long feeding of key nutrients that impact plant growth and filling.
  • Expect higher quality of grains with tight N:S ratios at grain filing and tight N:K ratios to transfer nutrients in the plant at filling.
  • Ca and Mg are secondary nutrients like Sulphur and are required in Ibs/bushel. We need 2 Ibs of Ca to make one bushel of canola.
  • Ca can act as a soft amendment and can tie up a salt when it releases the sulphate. Most all reclamation in the oil field uses calcium to reclaim lease sights.
  • Ca will help crops establish in marginally saline areas but not enough in the blend to correct a fully saline area.
  • We are thinking fertility or nutrition for feeding plants vs applying fertilizer, which plants don’t care for due to salt load.
  • Low N value which allows cheaper options and more flexibility on applying N as ammonia, or as trop dress etc.

It’s time to get round to using Polysulphate Premium

  • Uniform, robust spheres of natural, multi-nutrient fertilizer
  • Smooth surface protects from abrasion, humidity or damage
  • Spherical shape gives consistent flow rate
  • Consistent broad spread during application
  • Easily blended with other fertilizer materials
  • Attractive appearance in blends with other granulated fertilizer ingredients

Learn More

Trial Results for polysulphate on pats CANOLA REASEARCH from Patterson Grain in 2022 testing polysulphate against other fertilizers

We focus on fertility, not fertilizer. If fertility is your focus, check out our other innovative fertilizer solutions such as: Crystal Green and  SUL4R-PLUS


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