Organophosphate is the general name used for esters of phosphoric acid and is the basis of many insecticides.

Unfortunately, organophosphates are very highly toxic to humans. The only reason we are using them is because organophosphate pesticides are good and degrade very rapidly by hydrolysis on exposure to sunlight, air, and soil.

In agriculture "organophosphates" are a group of insecticides or nerve agents that act on the enzyme acetylcholinesterase (carbamates us the same enzyme, but in a different way).

Commonly used organophosphates Malathion, Folimat, Parathion, etc. ALWAYS FOLLOW THE MANUFACTURERS INSTRUCTIONS.