CNPK fertilisation systems are those with organic fertilisers, such as digestate. The difference with classic NPK fertilisation is the contribution of organic carbon (C), which is important for maintaining soil fertility and supporting plant productivity. Good CNPK fertilisation must be efficient and optimised for this purpose. So what needs to be evaluated on each farm to implement an optimised digestate distribution? Let's find out with Guido Bezzi from CIB.