GROWTH-PROMOTING ACTIVITY OF LIGNOACIDS, A BY-PRODUCT OF PLANT RAW MATERIAL OXIDATION INTO VANILLIN AND CELLULOSE

The growth-promoting activity of lignoacids (LA), by-products of the catalytic oxidation of flax shives into vanillin and cellulose, was studied. The growth-promoting activity of LA was estimated on radish seeds Raphanus sativus var radicula in laboratory conditions, as well as in soil in pots and open soil. It was shown that on filter paper low concentrations of LA (5–20 mg/l) significantly accelerate the germination of radish seeds, the average plant root and hypocotyl length are 1.5–3 times higher than with control solutions (water and sodium bicarbonate). The growth-promoting activity in pot experiments is preserved. In experiments on open soil the estimation of mass characteristics of plants and root crops was shown that the greatest growth-promoting effect is observed at a LA concentration 5 mg/l. The average values of plant mass increase by 70–180%, and root crop mass – by 140–150%.