Organophosphorus compounds are a class of chemicals that contain phosphorus and are commonly used in agriculture as pesticides and herbicides. They work by disrupting the normal functioning of the nervous system in pests, making them effective for controlling various agricultural pests. These compounds are also found in some industrial applications, such as flame retardants and plasticizers. While they are useful, organophosphorus compounds can pose health risks to humans and wildlife if not handled properly, as they can be toxic and may lead to environmental contamination.