Argenta, G., Silva, P. R. F. da, Mielniczuk, J., & Bortolini, C. G. (2002). Plant parameters as indicators of nitrogen status in maize crop. Pesquisa Agropecuaria Brasileira, 37(4), 519–527. https://doi.org/10.1590/S1678-3921.pab2002.v37.6370