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Pilot to turn cocoa shells into low carbon fertilizer

Published by , Editorial Assistant
World Fertilizer,

Nestlé UK and Ireland and Cargill launch their latest regenerative agriculture initiative, a UK supply chain trial, to assess whether cocoa shells from a confectionery site in York could be used to create a low carbon fertilizer.

This two-year trial is designed to evaluate the fertilizer’s performance on crop production, soil health and greenhouse gas (GHG) emissions reduction. If successful, up to 7000 t of low carbon fertiliser could be produced and offered to farmers in Nestlé’s UK wheat supply chain. This amount of fertilizer equates to around 25% of Nestlé UK’s total fertilizer use for wheat.

The production and use of conventional fertiliser accounts for approximately 5% of global GHG emissions, and more than half of the carbon footprint of wheat grown in the UK is related to fertiliser use.

Recycling valuable nutrients from waste streams within the food system provides a promising opportunity to create a lower emissions supply chain. Scaling up low carbon fertiliser production in the UK can provide farmers with a more sustainable product at a reliable price.

The cocoa shells are supplied by Cargill, which processes the cocoa at the York facility. A trial volume of cocoa shell has been processed and pelletised by Swindon-based CCm Technologies.

The trials, which were designed and are being overseen by York-based Fera Science Ltd, are currently taking place on arable farms in Suffolk and Northamptonshire. They are designed to investigate the performance of the fertilizer in terms of wheat yield and quality. They will also assess the impacts on soil biodiversity and GHG emissions in comparison to conventional products applied on the same farms.

For all companies involved, turning cocoa shells into a lower carbon fertilizer embodies their commitment to innovation, collaboration and creating a more sustainable supply chain. This project is an example of the innovative solutions that Nestlé is investigating to help achieve net zero emissions by 2050.

“Farmers often find themselves to be among the first groups to be exposed to global issues, and these risks are then borne by the food system we all depend upon. We have to find ways to build more resilience into the system and optimising our use of natural resources is a critical part of this,” said Matt Ryan, Regeneration Lead at Nestle UK & Ireland.

“This project is a small, but very meaningful step towards a net zero future, where farmers, local enterprises, and nature all stand to benefit,” added Ryan.

Richard Ling, Farm Manager at Rookery Farm, Wortham in Norfolk, who supplies wheat to Nestlé Purina, said: “We have now finished harvesting and we’ve successfully grown a Winter wheat crop using this new fertilizer.

“We’ve compared two parts of the field, one which used the cocoa shell fertilizer, and one which used with the conventional fertilizer, and there is no significant difference in the yield so we can see that it works!”

“We are really reassured with the results and are looking at running further trials. It’s a step change to be able to use a fertiliser made from a waste stream and see the same results as using a conventional product."

"It’s an exciting and promising time and we are pleased to be taking part in these trials to help reduce the carbon emissions from our farming.”

Sam Thompson, Global Engineering Lead at Cargill Cocoa & Chocolate, said: “Cargill and Nestlé have been working together for more than 60 years building resilient supply chains across communities where we both operate. We are excited to continue to build on this strong partnership through our innovative cocoa shell fertilizer trial,”

“Together, we hope to contribute to a more sustainable future for the British farming industry,” said Thompson. “Moving to a more sustainable world involves creating partnerships that think about waste differently,” said Pawel Kisielewski, CEO CCm Technologies.

“CCm’s technology enables many of the biggest players across agriculture and the food sector to give waste generated from routine food manufacturing a second lease of life as valuable low-emission sustainable fertilizer. This benefits farmer, customer and planet,” added Pawel.

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