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Articles » The effect of sowing dates on growth, yield and essential oil content of Dracocephalum moldavica L.

Abstract: Due to study the effect of swoing dates on Dragonhead, this research trial was carried out on
randomized complete block design with three replications. The effects of sowing dates on 6 of
March, 19 of March, 4 of April, 20 of April, 5 of May, 21 of May, 5 of June and 21 of June
were studied on growth and herb yield of Dragonhead. The results showed that sowing dates has
significant effect on growth and development of Dragonhead. The highest plant (82.5 Cm) and
the largest number of branches per plant (18.14) was obtained from the plants which were sown
on 19 of March and essential oil content (199.0 Kg/ha) was obtained from the plants which were
sown on 4 of April. There was no significant effect among herb yield and essential oil
percentage of different sowing dates. The highest essential oil content obtained from the plant
were sown on 4 of April, therefore, sowing this plant is recommended.
: Dr.Reza Omidbaigi
Keywords: dracocephalum moldavica - lamiaceae - sowing date - fresh and dry herb yield - essential oil