Fig. 2From: Reduction of soil contamination by cypermethrin residues using phytoremediation with Plantago major and some surfactantsEfficacy of surfactants in enhancing recovery of CYP from soil. Means and standard deviations of three replicates. Different letters on top of the bar indicate significant differences (p < 0.05). SiO2, liquid silicon dioxide; HPβCD, 2-hydroxypropyl-beta-cyclodextrin; HA, liquid humic acid; Tw80, Tween 80Back to article page