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首页> 美国政府科技报告 >Herbicidal Residues and Environmental Effects from the Experimental Application of Two 2,4-D Formulations to Control Eurasian Watermilfoil
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Herbicidal Residues and Environmental Effects from the Experimental Application of Two 2,4-D Formulations to Control Eurasian Watermilfoil

机译：两种2,4-D配方控制欧亚水蛭石的除草剂残留和环境效应

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In response to the need for an effective and environmentally acceptable herbicide to control eurasian watermilfoil, a serious aquatic weed problem, an interagency research study was initiated involving the USBR (Bureau of Reclamation) and the COE (U.S. Army Corps of Engineers). This document reports the tolerance and label amendment efforts done by the USBR. Experimental small-plot applications of 2,4-D dimethylamine (DMA) and butoxyethanol ester (BEE) at rates of 20 and 40 lb/acre (22.5 and 45 kg/ha) were made at Banks Lake, Washington and Fort Cobb Reservoir, Oklahoma with subsequent water, hydrosoil, invertebrate organism, and fish flesh sample collection and analysis for residues, through 56-days posttreatment. The temporary potable water tolerance of 0.1 mg/L (0.1 p/m) was exceeded in three 1-day posttreatment samples (of 1680 water samples analyzed) or 0.18% of the total samples.

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