Agent Orange was used specifically to eliminate cover and concealment in areas used by the North Vietnamese and Viet Cong as base camps, on known and suspected supply routes and on the perimeters of US and allied installations in Vietman and Korea. It was never intentionally used on "the horticultural system," although it cannot be denied that some of it probably spread to active cropland through the effects of the wind. It would never have been used at all if anyone but its manufacturers had known of its long-term effects.