Gypsum Demonstrations in Åland Autumn 2025

On October 15 2025, the open event, organised by the John Nurminen Foundation,  took place  in Jomala, Åland. The event brought together around 35 participants to observe gypsum spreading in practice.

 Milestone in Åland Fields

The field demonstration was hosted by the local farmer Dan-Erik Häggblom, who applied gypsum on three of his fields. Häggblom explained that his motivation was to support efforts to reduce eutrophication in the Baltic Sea. The demonstration marked a milestone for the project, with gypsum treatment now completed on 336 hectares of farmland in Åland.

© Anna Saarentaus

Clearer Waters Through Gypsum

In addition to the field demonstration, Pasi Valkama from the Finnish Environment Institute showcased gypsum’s impact local soil samples in experimental pots. Visitors could clearly see the difference in water clarity between runoff water from gypsum-treated and control soil. The test provided a practical proof of how gypsum reduces soil erosion and nutrient leakage from the fields. Finally, the difference in water clarity was confirmed by turbidity meter measurements.

Demonstrating the effects of gypsum: in 20 minutes the difference was clearly visible. © Anna Saarentaus

A Shared Baltic Effort

The event also highlighted the international scope of the GYPREG project, as partners from Latvia, Lithuania, Poland, and Sweden presented their updates on progress.

The GYPREG project team. © Eija Rantajärvi

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