Environmentally Safe Increase in Productivity of Amaranth under the Action of Growth Stimulants

Hormonal regulation of plant physiological processes, including use of phytohormone-based drugs and modifiers of their activity, offers a sustainable approach to enhancing plant productivity. The aim of our work was to reveal the features of amaranth ontogenesis under the influence of auxin growth stimulants. We assessed the effects of indoleacetic, indolylbutyric, and naphthylacetic acids on germination processes, development, and productivity of amaranth plants. It was established that the use of growth stimulants increased the germination energy by 7-17%, seed germination of amaranth by 5-9%, and also promoted the development of more vigorous plants, 3-10% taller compared to the control, depending on the variety. The use of growth regulators contributed to the optimization of crop productivity, manifested in changes in the crop structure. These results demonstrate the efficacy of synthetic auxin analogs in enhancing the growth and yield of research amaranth varieties.