Widely used in horticulture and agriculture as a rooting hormone to promote root development in plant cuttings. It stimulates rapid root formation in both softwood and hardwood cuttings, making it valuable for propagating ornamental plants, shrubs, and fruit trees. Commonly applied in powder, liquid, or gel formulations by dipping the cut end of a stem into the solution. Also used in tissue culture protocols to induce root initiation in vitro. Its potassium salt form offers better solubility in water, enhancing its effectiveness in spray applications and nutrient solutions.