Use of Recovered Struvite and Ammonium Nitrate in Fertigation in Tomato (Lycopersicum esculentum) Production for boosting Circular and Sustainable Horticulture

Struvite and ammonium nitrate are products obtained from widely studied processes to remove phosphorus (P) nitrogen (N) waste streams. To boost circularity in horticulture, these recovered should be applied edible crops. Particularly, struvite has not been implemented fertigation as the unique source of P fertilizer. Therefore, a soilless system greenhouse experiment was conducted for tomato crops during two growing seasons. This study aims compare agronomic environmental effectiveness used nutrient solution (NS) synthetic fertilizer treatment. Moreover, different N concentrations NS were tested evaluate impact on N-leaching. Additionally, dissolution tests performed ensure its solubility. Satisfactory results solubilization obtained. Results show that both nutrient-recovered can fertilizers NS, due their non-statistical significance total yield production fruit quality. However, treatment, depending crop variety, showed lower marketable yield. variation concentration input exhibited leachate differences, with leached percentage values 36 13%. These give deeper insights into future potential utilization technical data optimize strategies.