EFFECT OF PLANT GROWTH REGULATORS AND FERTILIZERS ON THE VEGETATIVE GROWTH OF SUNFLOWER (HELIANTHUS ANNUUS L.)

The effect of synthetic plant growth regulators Methyur, Kamethur and Ivin, as well as fertilizers Rostok Extra and Radix Tim forte plus, used separately or together, on the growth of four-week-old sunflower (Helianthus annuus L.) variety Azimuth was studied. Synthetic plant growth regulators Methyur and Kamethur, as well as fertilizers Rostock extra and Radix Tim forte plus, when used separately or together, had the greatest stimulating effect on the growth of sunflower shoots and roots. Synthetic plant growth regulator Ivin showed the highest effect on the growth of sunflower shoots and roots when used in combination with fertilizers Rostock extra and Radix Tim forte plus. The results obtained confirmed the prospect for the practical application of plant growth regulators Methyur, Kamethur and Ivin, used separately or in combination with fertilizers Rostok Extra and Radix Tim forte plus, to improve the growth and development of sunflower (Helianthus annuus L.) variety Azimuth in the vegetative phase