defoliant

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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 ?
A chemical warfare specialist during World War II, Conrad was an outspoken defender of using chemical defoliants in Vietnam, and he caused a furor when he suggested that actress-anti-war activist Jane Fonda ``do a service for her country'' by lying nude with him in a California rice paddy to be sprayed with defoliants.
The soldiers who fought in America's least popular war and who returned home to face joblessness, post-traumatic stress, alienation and diseases caused by chemical defoliants, today say they feel compelled to tell young people about their experiences.
Farmers rely on natural processes such as seasonal freezes, rather than the application of chemical defoliants, to prompt the opening of the cotton boll and allow the cotton bud to be picked by hand or machine.
humanitarian assistance to help the country deal with on the consequences of the Vietnam War, including the lingering effects of the toxic, chemical defoliants used by U.

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