Fernandes, M.S. et al. 2014. Effects of soil applied ammonium plus nytrapirin, on growth and metabolism of four rice cultivars. Pesquisa Agropecuaria Brasileira. 16, 3 (Apr. 2014), 303–307. DOI:https://doi.org/10.1590/S1678-3921.pab1981.v16.16876.