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Europe

10 March 2026

Grupa Azoty adds new sulphur fertilizer to its portfolio

Written by Simon inglethorpe

Grupa Azoty launched DuoS®, a new nitrogen–sulphur fertilizer, at the end of February. Its formulation is based on ammonium sulphate, ammonium nitrate and anhydrite and includes:

  • Two forms of nitrogen – nitrate and ammonium
  • Two sulphur sources – ammonium sulphate and anhydrite
  • Calcium to support crop resilience and the quality of produce.

The new nitrogen–sulphur fertilizer with added calcium is designed to improve nutrient use efficiency and reduce leaching and other nutrient losses. It is recommended for pre-sowing and top dressing on winter and spring cereals, winter rapeseed, sugar beet, potatoes, legumes, grassland, as well as vegetables and fruit crops.

Grupa Azoty says it is introducing DuoS® in the current season as part of a strategy to develop its fertilizer business and focus on specialty products.

“Developing more advanced fertilizer formulations is part of our focus on our key technological competences. We clearly see  a trend towards products that increase nutrient use efficiency and reduce environmental losses. DuoS® responds to these needs by combining proven solutions with a precisely designed nutrient release profile,” said Jacek Zaborowski, director, corporate trading department, AGRO Segment, Grupa Azoty.

The product’s different rates of sulphur release should ensure availability during initial crop growth stages as well as later in the growing season. Its nitrogen-to-sulphur ratio, meanwhile, is designed to match crop nutrient uptake, and should therefore reduce the risk of overapplication, particularly in early spring and late autumn.

Grupa Azoty previously launched POLIFOSKA Multi S, a high-sulphur multi-nutrient fertilizer product, in February last year. This contains 7% nitrogen in ammonium form, 10% phosphorus, 20% potassium, 5% calcium, 1% magnesium, and 23% sulphur in sulphate form.

Simon inglethorpe

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