1. Introduction to Paclobutrazol Paclobutrazol (PBZ) is a synthetic plant growth regulator (PGR) and a triazole fungicide that plays a crucial role in modern agriculture and horticulture. Its primary function as a PGR is to inhibit gibberellin biosynthesis, a natural plant hormone responsible for cell elongation. By doing so, Paclobutrazol effectively slows down vegetative growth, leading to more compact, sturdier plants with improved root development. This characteristic makes it highly valuable for managing plant size, enhancing crop yield, and promoting uniformity across various plant species [1]. Beyond its growth-regulating properties, Paclobutrazol also exhibits systemic fungicidal activity, offering protection against several economically important fungal diseases. This dual functionality makes it a…