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United States Prevention, Pesticides <br />Environmental Protection And Toxic Substances <br />Agency (7508W) <br />EPA-738-F-95-015 <br />July 1995 <br />&EPA R.E.D. FACTS <br />Pesticide <br />Reregistration <br />Use Profile <br />Diquat Dibromide <br />8.C.e <br />All pesticides sold or distributed in the United States must be registered <br />by EPA, based on scientific studies showing that they can be used without <br />posing unreasonable risks to people or the environment. Because of advances <br />in scientific knowledge, the law requires that pesticides which were first <br />registered years ago be reregistered to ensure that they meet today's more <br />stringent standards. <br />In evaluating pesticides for reregistration, EPA obtains and reviews a <br />complete set of studies from pesticide producers, describing the human health <br />and environmental effects of each pesticide. The Agency imposes any <br />regulatory controls that are needed to effectively manage each pesticide's <br />risks. EPA then reregisters pesticides that can be used without posing <br />unreasonable risks to human health or the environment. <br />When a pesticide is eligible for reregistration, EPA announces this and <br />explains why in a Reregistration Eligibility Decision (RED) document. This <br />fact sheet summarizes the information in the RED document for reregistration <br />case 0288, diquat dibromide. <br />Diquat dibromide is a non -selective contact herbicide, algicide, <br />desiccant, and defoliant. As a herbicide/algicide, it is used to control <br />broadleaf and grassy weeds in non -crop (including residential) and aquatic <br />areas. As a desiccant/ defoliant, it is used in seed crops and potatoes. Its <br />largest use is as a desiccant on potato crops. <br />Diquat dibromide is formulated as a soluble concentrate and ready -to - <br />use liquid. As a herbicide, it is applied using a hand-held or mechanical <br />sprayer; as an algicide, it is injected below the water surface to control <br />submerged weeds. When used as a desiccant, it may be applied by aircraft or <br />ground equipment. Applications in crop areas are made five days to two <br />weeks before harvest. <br />Use practice limitations include... <br />Attachment: EPA Facts (2109 : Dukes Root Control) <br />Packet Pg. 55 <br />