Data provided by these techniques were used in comparative evaluation of defoliant chemicals in relation to rate, volume, season of application, canopy penetration, and vegetation response.
Defoliants differ from herbicides in that the former seeks mainly to strip leaves from plants, and the latter is used to destroy or inhibit the growth of plants.
Forests were sprayed with defoliants, thousands of rural forest dwelling people uproots from their homes and moved and roads driven into previously isolated areas.