JAAKKOLA, A. Nitrate, ammonium and urea nitrogen as fertilizers for wheat and rye in a field experiment. Agricultural and Food Science, [S. l.], v. 50, n. 4, p. 346–360, 1978. DOI: 10.23986/afsci.71985. Disponível em: https://journal.fi/afs/article/view/71985. Acesso em: 23 nov. 2024.