Invasive plant species as promising sources of plant raw materials for creating biopesticides

The effect of aqueous plant extracts on the growth of test cultures exhibits a dependence on both the plant species and the con centration of the aqueous extract. Extracts obtained from various organs of invasive plant species primarily exert an inhibitory effect on the germination energy, germination and growth of test crop seedlings. The intensity of inhibition increases with the increasing extract concentration. With decreasing extract concentration, the inhibitory effect diminishes and tends to stimulate the germination processes of test crops. By varying the concentration of aqueous extracts obtained from invasive plant species and the type of plant material (rhizome, roots, rhizome, stem, leaves, inflorescences, seeds), it is possible to form biologically active preparations with specified properties (inhibitory, stimulating).