Prof.Raul MoralCatedrático Edafología y Química Agrícola - Universidad Miguel Hernández de ElcheThe general topic of this seminar is around the role of organic waste management by composting as a key tool to balance the emission of agricultural GHG and as a way to restore fertility of the soils and enhance C sinks in Mediterranean soils. Exploring the potential role in intensive agriculture of substitution of perlite and peat substrates by high quality compost will be presented as an example of case study.