Original ResearchPublished 29 July 2026Synthesis, optimization, and biosafety assessment of nanozeolite-based slow-release nitrogen fertilizers for spinach beet (Beta vulgaris var. bengalensis)Pooja Lakshmidevarahalli Ramalingappa · Renu Singh · Shiva Dhar · Harshwardhan Choudhary · Jorge Gardea-Torresdey · Manoj ShrivastavaFrontiers in Soil Sciencedoi 10.3389/fsoil.2026.1820226