The adsorption of termiticides in soil is one of the most important factors affecting the efficacy and availability. Bifenthrin, fipronil, and imidacloprid were applied to predetermined quantities of soil from low to high concentrations. Adsorption isotherms, soil adsorption coefficients (Kd) and soil organice carbon partition coefficient (Koc) were determined for each termiticide. The results revealed that Koc values for three termiticides decreased significantly as concentrations increased. These data signify that more molecules of termitcides are availablein soil when they are applied at higher concentrations.
Species 1: Isoptera Rhinotermitidae Reticulitermes flavipes (Eastern Subterranean Termite)
Keywords: Bioavailability, Soil Organic Partition Coefficient
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