What is the primary purpose of herbicides?

• A. To control weeds
• B. To kill insects
• C. To treat fungal infections
• D. To fertilize plants

Answer: (A)

Herbicides are chemicals used to control weeds. The main goal is to prevent unwanted plants from competing with crops for sunlight, water, and nutrients, which helps crops grow better and can improve yields. Some herbicides target specific weed species (selective), while others affect many plants (non-selective). They can be applied before weeds emerge (pre-emergent) or after they appear (post-emergent). This purpose contrasts with insecticides, which kill insects, fungicides which treat fungal infections, and fertilizers which provide nutrients to plants. Understanding this helps explain why a herbicide would be used in gardens or fields.