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All three presentations were delivered during the P2GreeN 2nd Cross-Fertilisation Workshop (24/04/2025) and showcased how different pilot regions operationalise circular nutrient flows linking sanitation and wastewater management to agriculture through recoverable nutrients and smarter water–nutrient use. Together, they offer three complementary pathways: nutrient recovery from urine, integrated recovery from urine and faeces, and nutrient-optimised fertigation using reclaimed water. Swedish pilot region (Recycling urine into fertiliser). The Swedish presentation focused on urine diversion and processing to turn collected urine into a dry fertiliser product for agriculture, framing urine as a high-value nutrient stream that can reduce reliance on synthetic fertilisers. It highlighted the end-to-end chain from urine-diverting toilets and collection, through stabilisation and concentration, to a drying system and fertiliser pellet production backed by field evidence showing performance comparable to conventional fertilisers and attention to safety factors such as pharmaceutical residue levels. The talk also emphasised practical replication pathways, including larger installations in buildings and public venues where collection volumes and waste heat make the model more viable. German pilot region (Recycling N and P from separated urine and faeces into bio-based fertilisers). The German presentation described an integrated approach that treats both urine and faeces from source-separated sanitation to produce recycled fertiliser products, combining urine-derived fertiliser with compost from dry toilet contents. It detailed the pilot set-up and partnerships, the treatment routes for each stream, and a multi-year field trial design using rye to compare recycled fertilisers with mineral, organic, and no-fertiliser controls. Early findings reported similar soil nitrogen dynamics across treatments and no significant yield differences in 2024, alongside monitoring of contaminants and hygiene indicators to support product safety and regulatory alignment. Spanish pilot region (Nutrient-optimised fertigation with reclaimed water). The Spanish presentation centred on using reclaimed municipal wastewater as both an irrigation source and a nutrient carrier, paired with a decision-support approach to prevent over-fertilisation and manage water quality. It laid out the Axarquía regional context high-value subtropical crops under severe water stress and the value chain connecting wastewater treatment, reclamation, monitoring equipment, and fertigation management for avocado and mango trials. Key points included measured nutrient concentrations in reclaimed water, the potential to cover a large share of nitrogen demand (and sometimes exceed potassium demand), and quantified freshwater savings, while flagging operational requirements such as controlling electrical conductivity, maintaining pathogen safety via WWTP performance, and continuing monitoring (including pharmaceuticals).