Nitrofen solution is primarily used as a herbicide in agricultural practices to control the growth of weeds in crops such as rice, soybeans, and vegetables. It works by inhibiting photosynthesis in target plants, effectively preventing their growth and ensuring that crops have access to essential nutrients and resources. Additionally, it is applied in pre-emergence and early post-emergence stages to maximize its effectiveness. However, due to environmental and health concerns, its use has been restricted or banned in many regions, prompting the development of safer alternatives.