Ratke, R.F. Verginassi, A. Basto, D. de Morgado, H.S. Souza, M.R.F. de Fernandes, E.P. Production and levels of foliar nitrogen in rocket salad ferilized with controlled-relaease nitrogen fertilizers and urea Subjects--Topical Terms: RÚCULAERUCA SATIVANITROGÊNIOURÉIA