Direct effects sulfur nitrogen compounds

The organic pesticides contain carbon. They also contain hydrogen and often oxygen, nitrogen, phosphorus, sulfur, or other elements. Most pesticides used today are organic compounds. A few organic pesticides are either derived or extracted directly from plants. Most, however, are synthetic compounds. It is these compounds that have been responsible for the expanded use of pesticides since World War II. They are often extremely effective and easy to use, have been relatively lowcost and some are quite specific in their activity. They have, however, been the principal focus of health and environmental concerns and are the pesticides most commonly associated with problems of pesticide use and misuse. 

---