A field experiment has been conducted in the region of Dobrudja with the aim to investigate the essential oil yield and its chemical composition by four lavender varieties: Hemus, Sevtopolis, Yubileyna and Druzhba. The experiment has been arranged according to the Randomized Complete- Block Design in four replications and a plot size of 10 m2. The essential oil yields varied from 90 l ha-1 by the variety Hemus to 131 l ha-1 by the variety Sevtopolis. The major constituents of the essential oil were linalyl acetate (25.5-39.7%) and linalool (27.6- 38.9%). The content of linalyl acetate was the highest by the variety Hemus, as only by this variety the ratio between linalyl acetate and linalool is 1:0.7, which defined the essential oil as high qualitative.
During the period from 2014 to 2017 year in the region of Dobrich, Bulgaria, a field experiment has been conducted with the aim to determine some agricultural characteristics of lavender varieties. The following characters have been investigated: number of flowers/plant, length of the flowering stem, number of flower clusters/plant, weight of flowers/plant (g), yield of flowers (kg ha -1 ), essential oil content %, extraction essential oil yield (kg). The experiment has been carried out according the randomized block design in four replications and plot size of 10 m 2 . Four lavender varieties have been used-Hemus, Yubileyna, Druzhba and Sevtopolis. From the performed analyzes, it was established, that the variety Druzhba distinguished from the other varieties in term of yield of fresh flowers, not only by years, but also on average for the study period, as the higher productivity of this variety is due to the higher values of the structural elements of the yield. The highest percentage of essential oil content for the three-year period with 2.1% was realized from the variety Sevtopolis, and the lowest with 1.6% from the variety Hemus.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.