Sorption-desorption kinetics of alachlor in surface soil from two soybean tillage systems

Alachor [2-chloro-N-(2,6-diethylphenyl)-N-methoxymethyl)-acetamide] sorption patterns were evaluated in surface (0-5 cm) Dundee silt loam (fine-silty, mixed, thermic Aeric Ochraqualf) soil collected from long-term conventional tillage (CT) and no-tillage (NT) soybean [Glycine max (L.) Merr.] plots. Three concentrations of [ 14 C] alachlor (0.58, 2.44, and 18.1 μmol L -1 ) in 0.01 M CaCl 2 were added to soil (3 g/18 mL) and samples were shaken for time periods ranging from 1 min to 96 h []