Home – Home – Jornals – Chemistry for Sustainable Development 2016 number 1

Experiments on the enhancement of plant stability to oil pollution of soil were carried out for Vicia sativa as example. It was established that the positive effect on the probability of plant survival and an increase in the degree of destruction of oil pollution may be achieved due to the preliminary treatment of seeds by soaking them in potassium humate of salicylic acid solutions in different concentrations. With a 5 % addition of oil into soil, the best result on germ survival and the degree of destruction of oil pollution was obtained after seed soaking in the solution of salicylic acid with the concentration of 10^-4 mol/L, while for 10 % addition of oil - in the solution with the concentration of 10^-3 mol/L. Somewhat less efficient is seed treatment in humate solution. Baikal EM-1 preparation has insignificant positive effect only in the case of 5 % oil addition into soil. The degree of destruction of oil pollution exhibited good correlation with the survival of Vicia sativa ( K _corr = 0.9) in all experiments. A positive result of seed soaking in potassium humate is likely connected with its adaptogenic activity. Salicylic acid in low concentrations (10^-3-10^-4 mol/L) seems to be able to induce prooxidant processes participated by Н₂О₂. Due to this fact, first of all, the stability of plant organism to environmental stress factors increases as early as at the stage of seed soaking; second, Н₂О₂ and peroxidase secreted into the rhizosphere enhance the processes of oxidative oil destruction. Preliminary soaking of seeds in the solutions of salicylic acid with different concentrations depending on the level of oil pollution, or potassium humate may be recommended to increase the efficiency of revegetation of oil-polluted soil by means of phytoremediation.