Polysulphate: the lower carbon footprint fertilizer

28 January 2019

Results of an assessment by sustainability experts show that Polysulphate fertilizer production has the lowest carbon footprint compared with other products.

Polysulphate fertilizer has the lowest carbon footprintCarbon footprint matters

There is increasing interest in knowing the carbon footprints of products in farming and in food supply chains. Retailers and consumers want to compare the ecological impact of foods. They want to look at every input and activity all the way through the production process from field to fork.

A growing proportion of farmers and growers are interested in the carbon footprint of the inputs they use. Minimising carbon footprint from fossil fuel-generated energy is one of the criteria used by farming and food production accreditation standards to differentiate sustainable farming businesses from others and is essential for organic systems. 

Why Polysulphate has a low carbon footprint

Polysulphate has a low carbon footprint because it is a natural product. It is just mined, crushed and screened without any further energy-intensive chemical processes. There is no flotation or crystallization, which are used to create other fertilizers, so energy and water use in Polysulphate production is also far less. In addition, there are no by products from the Polysulphate production to deal with and this also contributes to its small ecological footprint.

Polysulphate makes twenty times lower contribution to global warming

Waste and sustainability experts Filkin and Co measure carbon footprint as an estimated value of the product’s global warming potential. For Polysulphate, they calculated that to be 0.06 kg CO2 e per kilo of product. In comparison, the global warming potential they calculated for a kilo of ammonium nitrate is almost 1.2 kg CO2 e or twenty times higher.

For farmers and growers, especially those in organic production or accredited to an international standard of sustainability, the news that Polysulphate, when compared with other fertilizers, has the lowest carbon footprint is very welcome. It means that as well as giving precise, balanced and effective nutrition to the crop, using Polysulphate is also good for the future of planet earth.