ABSTRACT
The fact that small amounts of a chemical (herbicide) can be applied to unwanted vegetation and make ecological swifts favorable to man's purposes is remarkable and a modem-day wonder, especially for woody plants. For centuries man has attempted to control weeds with his hands and crude devices to favor food production, many times without success. In his book Are Pesticides Really Necessary?, Barrons (1981) quotes an old Byzantine proverb that states "He who has bread may have many troubles; he who lacks it has only one.''
