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Title:   Author  item
                                            Hamlin, Jenniferitem
                                            ALONSO, DIEGO - University Of Maringaitem
                                            Rice, Pamelaitem
                                            Koskinen, William
  Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 8/22/2011
                                    Publication  Date: 10/19/2011
                                    Citation: Rittenhouse, J.L., Alonso, D.G., Rice, P.J., Koskinen, W.C. 2011. Indaziflam sorption-desorption in diverse soils. ASA-CSSA-SSSA Annual Meeting Abstracts. Abstract #394-28.Interpretive Summary:
                                Technical Abstract: Indaziflam is a new preemergence-herbicide active ingredient, classified as a member of the new chemical class “alkylazine”. There is no published information on its fate and behavior in soil. This study is aimed at characterizing the adsorption and desorption of indaziflam in soils with different physical chemical properties. Three surface soils and three subsurface soils in Minnesota with varying soil properties (pH 5.8-7.6, 1- 3% organic carbon, 3-23% clay) were used in the study. Adsorption-desorption studies were performed using the batch equilibration method. Sorption to soil was variable; Kd ranged from 5.7-19.6 ml g-1. The surface soils had higher Kf values as compared to the subsurface soils. Normalization of adsorption for organic carbon reduced variability, but did not eliminate it. Desorption of indaziflam was hysteretic, indicating that adsorption data alone will be not be sufficient to accurately predict its transport in soil. More work is needed to further characterize indaziflam adsorption-desorption in aged soils and the potential for indaziflam to contaminate water resources.


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