Diclobutrazol is primarily used in agriculture as a plant growth regulator. It helps control the growth of plants by inhibiting gibberellin biosynthesis, which results in reduced stem elongation and promotes shorter, sturdier plants. This effect is especially useful in cereal crops, ornamental plants, and fruit trees where excessive vegetative growth can lead to lodging or reduced yield. It is applied to improve crop resistance to environmental stresses such as wind and rain, thereby minimizing crop loss. Diclobutrazol also enhances root development and increases the efficiency of nutrient uptake, contributing to better plant health and higher productivity. In horticulture, it is used to regulate the size and shape of ornamental plants, making them more compact and aesthetically desirable. Due to its growth-retarding properties, it is also used in turf management and on golf courses to reduce mowing frequency and maintain uniform grass height. Its systemic action allows for effective results even at low application rates, making it a cost-effective option for long-term plant growth management.