As data shown, N fertilization increased leaf number (Table 3). The
highest leaf number was related to the fourth treatment (150 kg N ha−1)
with 26.09 leaves (at vegetative stage) and 90.76 leaves (at reproductive
stage), while the lowest was related to the control treatment with 23.92
and 82.76 leaves at vegetative and reproductive stages, respectively, which
were in agreement with findings of Ayodele (2002) and Boroujerdnia and
Alemzadeh Ansari (2007).