Agent Orange is a chemical herbicide and defoliant, one of the tactical use Rainbow Herbicides.
Stacks of 200 L (44 imp gal; 53 US gal) drums containing Agent Orange.
Defoliant spray run, part of Operation Ranch Hand, during the Vietnam War by UC-123B Provider aircraft.
U.S. Army armored personnel carrier (APC) spraying Agent Orange over Vietnamese rice fields during the Vietnam War.
A UH-1D helicopter from the 336th Aviation Company sprays a defoliation agent over farmland in the Mekong Delta.
Herbicides, also commonly known as weed killers, are substances used to control undesired plants, also known as weeds. Selective herbicides control specific weed species while leaving the desired crop relatively unharmed, while non-selective herbicides kill plants indiscriminately. The combined effects of herbicides, nitrogen fertilizer, and improved cultivars has increased yields of major crops by 3x to 6x from 1900 to 2000.
A field after application of a herbicide
Weeds controlled with herbicide
Herbicides being sprayed from the spray arms of a tractor in North Dakota.
Handicapped children in Vietnam, most of them victims of Agent Orange, 2004