CHOUDHURY, A. T. M. A.; KHANIF, Y. M. EFFECTS OF NITROGEN AND COPPER FERTILIZATION ON RICE YIELD AND FERTIL- IZER NITROGEN EFFICIENCY: A 15N TRACER STUDY. Biological Sciences - PJSIR, [S. l.], v. 47, n. 1, p. 50–55, 2004. Disponível em: https://v2.pjsir.org/index.php/biological-sciences/article/view/1457. Acesso em: 17 may. 2024.