Carrer, S. da C. et al. 2014. Nitrogen soil fertilization and foliar application of urea on the yield and chemical composition of guinea grass. Pesquisa Agropecuaria Brasileira. 23, 9 (Apr. 2014), 957–961. DOI:https://doi.org/10.1590/S1678-3921.pab1988.v23.14014.