Allelopathic Activity of Secretions of Plant Mass and Soil From the Form of Monard Double (Monarda didyma L.)
The allopathic properties of secretions from vegetative and generative organs of plants and soil from the spicy-aromatic species of monardial plants during cultivation in soil-climatic conditions of northern and central forest-steppe of Ukraine were analyzed. It is proved that the investigated species of plants has allopathic activity. Based on the analysis of the effect of bivalve monardium extracts on biometric indicators of biotest, it was established that the length of the watercress root is a sensitive indicator and varied over a fairly wide range. Allopathic activity of alcohol-soluble secretions from different organs of the double monarch that grew on the territory of Umani was much higher than the plants in Kyiv. probably they have in their knees certain allelopathic activity, which are more intensively synthesized at the beginning of the development of the monard, during the formation of generative organs allopathic activity is variable, in particular, in the budding phase there is a decrease in its activity, and in the flowering phase - there is flowering.