defoliant

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Related to defoliants: Chemical defoliants

defoliant

a chemical used to remove the leaves from plants to facilitate mechanical harvesting. The early defoliants, especially arsenical compounds, presented serious hazards if the plants were later fed to livestock or if the spray drifted to nearby pasture paddocks. Modern defoliants are nontoxic if used according to manufacturer's recommendations. See mcpa, tributyl triphosphorotrithioite, thidiazuron.
References in periodicals archive ?
To counter variation in the effectiveness of vinegar defoliants, check the weeds you sprayed daily for at least three days after treatment, as some leaf buds may continue to develop.
The Vietnamese Red Cross estimates three million people today suffer from dioxin poisoning related to the US use of defoliants between the 1960s and 1971.
The base was a key site in the US defoliant program during the Vietnam War, and much of the 80 million litres (21 million gallons) of Agent Orange used during "Operation Ranch Hand" was mixed, stored and loaded onto planes there.
One of these defoliants was Agent Orange, and some troops were exposed to it.
M2 EQUITYBITES-22 July 2010-American Vanguard Corp reports purchase of cotton defoliant from Bayer CropScience(C)2010 M2 COMMUNICATIONS http://www.
In 1981, in concert with several "Agent Orange" groups and the DAV, we began a campaign to force the VA to recognize the fact that defoliants were used in places other than Vietnam, most extensively, as the Department of the Army willingly admits, in the Korean DMZ area.
Dow Chemical was singled out because it manufactured napalm and defoliants, including Agent Orange, used in Vietnam against civilian as well as military targets.
This trifecta is what ultimately brought victory to one of the world's poorest nations over one of the world's richest--but it was a victory with a high cost, as the effects of American poisons, defoliants, and the memory of American massacres linger to this day.
military sprayed 79 million liters of herbicides and defoliants over about one-seventh of the land area of southern Vietnam.
In an effort to deprive the Communist Vietcong guerrillas of the dense cover they found in the hardwood forests and mangroves that fringed the Mekong Delta, the American military sprayed 79,000,000 liters of herbicides and defoliants (including Agent Orange) over about one-seventh of the land area of South Vietnam.
The flammable jelly, often laced with defoliants including Agent Orange, was dropped in bombs to raze forests and expose the enemy.
The cotton is grown without the use of genetically modified seeds, synthetic pesticides or insecticides and harvested without the use of defoliants.