With environmental sustainability becoming a driving force in U.S. agriculture, phosphorus recovery fertilizers are gaining momentum as a green alternative to traditional phosphate-based fertilizers. However, these eco-friendly options require precise nutrient management, which begins with accurate soil testing. In this article, we explore the benefits and challenges of phosphorus recovery fertilizers, and how the Digital 3-in-1 Soil NPK Tester empowers farmers to monitor and manage soil nutrients effectively—leading to higher yields, healthier soil, and a cleaner environment.