The effect of herbicides on the qualitative properties of healing plants. Part 2: Content and composition of the essential oil from Salvia officinal is L. after application of Afalon 50 WP.

The aim of our work was to study the changes of the content and quality of volatile oil in Salvia officinalis L. being treated with Afalon 50 WP (the active substance linuron) in the major ontogenetic phases of the plant growth. The plants treatment with a herbicide in pre-emergence did not cause a dramatic change in the essential oil content or in the proportional representation of its individual components. During the investigation of the changes in quality of the essential oil after an application of Afalon during various plant growth phases there was found the same relationship when compared with those being untreated.