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Published online 9 January 2007
Published in J Environ Qual 36:128-134 (2007)
DOI: 10.2134/jeq2006.0160
© 2007 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Field History and Dissipation of Atrazine and Metolachlor in Colorado

Dale L. Shanera,* and W. Brien Henryb

a USDA-ARS, Water Management Research Unit, 2150 Centre Ave., Building D, Suite 320, Fort Collins, CO 80526
b USDA-ARS, Central Plains Resources Management Research Unit, 40335 County Rd. GG, Akron, CO 80720


Figure 1
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  		Fig. 1. Dissipation of atrazine and metolachlor in three fields in eastern Colorado from 2003 through 2005. Data are fitted to equation Y = Ae–kt where A is the amount of herbicide in soil at the first sampling time (mg kg–1); k is the first-order rate constant (d–1); and t is time (d).

 




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