Ways to increase the yields of essential oil from plantations of essential oil crops in the Western Ciscaucasia

The importance of a complex usage of microfertilizers and a retardant on Origanum vulgare, Achillea millefolium, Salvia officinalis, Menthaxpiperita, Dracocephalum moldavica is shown. Treatment of essential oil plants by the microfertilizers Siliplant, Citovit, Ferovit in the phase of plant growth beginning and Hardy in the generative phase contributed to an increase in the yield of raw materials by 10-12% and the content of essential oil by 31-47%. Through exogenous regulation of growth processes, two components of bioproductivity are increased, which ultimately leads to an increase of essential oil yields per a hectare not only compared to the control (45-63%), but also to a retardant use (917%).