RAGÁN, P. Examination of the chlorophyll content of maize hybrids of different maturity groups at different N fertiliser doses. Acta Agraria Debreceniensis, [S. l.], n. 51, p. 159–162, 2013. DOI: 10.34101/actaagrar/51/2082. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/2082. Acesso em: 31 jan. 2023.