investigated. Seeds of S. officinalis were sown in fields at 3 plant densities (20× 25, 20× 45
and 20× 70 cm) and 3 doses of N applied (0, 80 and 160 kg/ha). Tabulated data on the
mean values for fresh and drug herb yields, drug leaf yield and essential oil percentage for
the different levels of N and plant densities. The overall mean values obtained from 3 years
for all the measured characteristics are also presented. The results showed that sage, which …