Effectiveness of Mineral Fertilization on Corn for Grain, Cultivated in Pellic Vertisol, FAO in Southeastern Bulgaria in Favorable and Risky Meteorological Conditions. BJSSAE [Internet]. 2014 Jun. 30 [cited 2026 Feb. 10];48(2):34-42. Available from: https://agriacad.eu/ojs/index.php/bjssae/article/view/2397