Hajebrahimi A, Nasrollahzadeh S, Shafag-Kolvanagh J, Aghaei-Gharachorlou P. Effect of nitrogen rates on critical period for weed control and yield of corn (zea mays). Sci. J. Crop Sci. [Internet]. 2014Mar.29 [cited 2026Jan.4];3(3):17-23. Available from: http://www.sjournals.com/index.php/sjcs/article/view/1210