Effect of Adding Nano NPK Fertilizers and Foliar Application of Nano Zinc and Boron on the Concentration of NPK, Zn, and B in the Vegetative Parts of Potato (Solanum tuberosum L.) Plants. EJAS. 2026;18(3). Accessed October 31, 2026. https://ejs-agri.com/index.php/EJAS/article/view/337