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in a responsible manner

Lime stops phosphorous runoff – work for healthier Baltic Sea

In 2012, Nordkalk joined the Baltic Sea Action Group (BSAG) in preserving the Baltic Sea with a 5-year-long commitment with the goal of reducing the phosphorus burden on the Baltic Sea with Nordkalk’s Fostop® concept.

In agriculture, liming reduces the soil’s acidity, which improves the plants’ living conditions and allows them to use nutrients more efficiently, resulting in bigger crops and reduced nutrient runoff into watercourses.  

In addition to traditional soil-improvement lime, Nordkalk's Fostop® concept tackles the challenge of phosphorous runoff. Fostop is used for the structure liming of fields, the stabilisation of sludge, and for lime filters and drains that help to reduce leakage and contribute to the recycling of phosphorus. This is extremely important because world’s phosphorus reserves are estimated to last only for a few more decades.

In Sweden, where the state grants environmental subsidies to farmers for curbing phosphorus runoff, Nordkalk’s Fostop Structure is a well-established method. One of Nordkalk’s many phosphorus-related research projects is also under way in Sweden. It involves structure liming and testing Fostop filter drains in the fields surrounding lake Bornsjön near Stockholm. The project is being carried out in co-operation with Stockholm Water and the Swedish University of Agricultural Sciences.

In Finland, Structural liming has been tested in smaller scale in laboratories and on the fields. These tests help optimizing the correct spreading amounts for the Finnish soil types. Structure lime has been tested on the Finnish market since 2015.

Nordkalk’s commitment is ending, but work to reduce the phosphorus burden on the Baltic Sea and other water courses will continue. Even though, there wasn’t enough time to launch structure lime to the Polish and Baltic markets, we aim to increase the awareness of the environmental and crop benefits of liming in these areas, too.

Leader in Northern Europe

Nordkalk is the leading limestone company on its home markets. We deliver essential raw materials to numerous industries, and our solutions contribute to clean air and water as well as productivity of agricultural land.