Effectiveness of Mineral Fertilization on Corn for Grain, Cultivated in Pellic Vertisol, FAO in Southeastern Bulgaria in Favorable and Risky Meteorological Conditions. Bulgarian Journal of Soil Science, Agrochemistry and Ecology, [S. l.], v. 48, n. 2, p. 34–42, 2014. Disponível em: https://agriacad.eu/ojs/index.php/bjssae/article/view/2397.. Acesso em: 10 feb. 2026.