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Compost calculator

This calculator allows you to see the financial values of the key nutrients N, P and K present in compost and digestate (biofertiliser), when compared with inorganic fertilisers.

The values are based on current market prices for fertilisers and the typical readily available nutrient content of composts and digestates.

The compost calculator is updated by WRAP. The most up to date version of the compost calculator can be viewed on their website. 

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