• Nitrogen granules are coated first with sulphur (a plant nutrient in itself) and then a unique polymer membrane, which is biodegradable
• Once moisture permeates this outer polymer membrane and sulphur coating, nitrogen is released. Depending on the thickness of the coating, this can take up to 6 months
• Major increases in soil temperature and/or moisture do not create severe fluctuations in this release pattern, ensuring that Poly-S provides non-surge growth and a healthy, green turf even in warm, wet conditions
• Because nutrient uptake is so efficient, the risk of leaching is reduced
• Mowing is also reduced, which in turn reduces dry matter production (i.e. grass clippings)
• The result is a release curve that mimics the plant’s requirements and minimizes nutrient wastage

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Poly-S technologie is found in the following Scotts brands:

SierrablenPlus
SierrablenPlus contains high amounts of nitrogen, phosphorus and potassium controlled release coating technologies, like Poly-S and PACE.

Sierrablen
Sierrablen is the larger granule version of SierrablenPlus but with all the benefits.

Sportsmaster CRF Mini
Sportsmaster CRF Mini is a mini granulated product range containing the ideal mix of coated and uncoated nitrogen.

Sportsmaster CRF
Sportsmaster CRF is a granulated product range with normal size granules, containing an ideal mix of coated and uncoated nitrogen.

Sportsmaster OrganiCRF
A normal granulated organic range containing an ideal mix of organic base amterial combined with unique Poly-S coating.