What type of chemical substance is designed to control plant growth?

Herbicides are specifically designed to control or eliminate unwanted plants, such as weeds, and promote the growth of desired crops by targeting plant physiology. They work by disrupting various processes in the plants they are meant to suppress, which can include growth hormones, photosynthesis, or other essential functions. This targeted approach makes herbicides a critical tool in agriculture for managing plant health and maximizing crop yields. In contrast, pesticides broadly cover various chemicals used to manage pests, including insects, rodents, and diseases, while insecticides specifically target insects, and fertilizers are substances that provide essential nutrients to plants to enhance growth.