Simazine is a chemical herbicide commonly used in agriculture to control weeds in crops such as corn and sorghum. It belongs to a class of chemicals known as triazines, which work by inhibiting photosynthesis in plants, effectively preventing their growth. This herbicide is often applied to soil before planting or as a pre-emergent treatment. While simazine is effective in managing unwanted vegetation, it is important to use it according to safety guidelines, as it can have environmental impacts, particularly on water sources and aquatic life.