Effects of some biological and chemical fertilizers on morphophysiological characters and essential oil inRosa damascenaMill. in drought stress

Biological and chemical fertilizers have important effects on the growth and development of plants and consumption of these fertilizers has increased quantitative and qualitative production in plants. In this study, the effects of biological fertilizers such as Botamisol, Humic acid, horse manure, sheep manure, cow manure, poultry manure, vermicompost and complete chemical NPK with two controls (water foliar application and without any foliar application) and three levels of drought stress (field capacity, 50% and 75% loss of gravitational water) on morpho-physiological characters and the content/composition of the essential oil of Rosa damascenawere investigated. This research was performed in a randomized complete block design in a factorial layout with three replications. From thirteen essential oil components, the most components were Citronellol, Geraniol (alcoholic oxygenated monoterpenoides), Heneicosane and Nonadecane (alkane hydrocarbons). Heneicosane (33.6 % and 34.6 %) had the highest amounts of essential oil components. Treatments of poultry manure, vermicompost or complete chemicals in field capacity conditions increased the height of the plant (214.4 cm and 212.1 cm), number of stems (23.1 and 22.2), total chlorophyll (18.3 and 18.1 mg.Kg FW-1), R.W.C (68.4 and 69.5), petal yield (7651.5 and 7591.2 Kg.ha-1) and content of essential oil (0.076 and 0.069%). Suggest to obtain the highest quality of essential oil in damask rose, such as important components (Citronellol, Geraniol) in the same condition, using poultry manure and complete chemical fertilizers.