What type of chemical is specifically used to alter or change the plant itself?

Growth regulators are chemicals specifically designed to alter or influence the growth processes of plants. They can modify physiological processes, thereby affecting various stages such as germination, flowering, fruiting, and overall growth patterns. These substances can either stimulate or inhibit growth, making them essential in agricultural practices for enhancing crop production and controlling unwanted traits.

For instance, when applied appropriately, growth regulators can promote earlier flowering or delay senescence, ultimately affecting yield and quality. This distinguishes them clearly from other chemical categories. Herbicides are focused on killing or inhibiting plant growth, particularly weeds, while insecticides target pests, and fungicides are designed to combat fungal diseases. Each of these has a specific function related to either pest management or plant health, but growth regulators uniquely handle the internal processes of the plant itself, making them a key tool in plant management and agriculture.