Effect of Watering of Selected Seasoning Herbs with Water Treated with Low-Temperature, Low-Pressure Glow Plasma of Low Frequency

Plantations of lovage, marjoram, rosemary and thyme were watered with water treated with low-temperature, low-pressure glow plasma of low frequency. Such watering appeared beneficial to the extent dependent on particular herb. In terms of crop yield and quality, water treated with glow plasma performed best in the case of rosemary, and the worst results were observed for thyme. When yield of essential oils are taken into account, only in the case of lovage did such watering appear beneficial, while in the remaining cases it had no effect. However, such watering considerably changed the composition of essential oils. These changes were specific for a given herb and involved the quantity of particular components of the oils. Only in the essential oil from lovage did gamma-terpinene appear as its novel component.