Fig. 1. The effect of the concentration of the initial herbicide solution on the extent of 2,4-D sorption in a Long Plain sandy loam soil as determined by a batch-equilibrium experiment that utilized a 1:2 soil–solution ratio. The soil was obtained (0–10cm) from an agricultural field in Manitoba, Canada. Soil organic carbon content is 0.6%, soil pH is 7.7, and soil clay content is 13%. Data points are mean values (triplicates). Data from Reimer (2004).