Soilex: Fertilizer granules leveraging novel viscoelasticity for programmable nutrient release. Soilex develops innovative, single-material fertilizer granules with programmable release rates, achieved through viscoelastic control of water-soluble polymers. Unlike traditional coated fertilizers, our solution eliminates the coating step—reducing production costs by up to 50\%—while improving impact resilience, dispersion efficiency, and nutrient use. This simplifies manufacturing and enables precise nutrient delivery based on soil and crop needs, reducing leaching, runoff, and environmental damage. Soilex granules are compatible with existing application equipment, requiring no extra investment from farmers. Our approach supports sustainable agriculture and aligns with EU Green Deal objectives. Backed by validated scientific methods, prior industrial experience, and the innofounder grant, our team aims to finalize 25 granule compositions, conduct greenhouse and in-vitro tests, and engage with scaling partners (e.g., Yara). The goal is to enter full-scale production by 2029, delivering a commercially viable, climate-smart fertilizer alternative.