Both the pesticide residues in the soil and the presence of antifeedant on seeds (de Paulo may have a negative effect on plant germination and development. Therefore, the effect of quinine-based QASs and a reference substance (quinine hydrochloride) on seeds of a dicotyledonous (white mustard, S. alba) and a monocotyledonous plant (sorghum, S. bicolor) was studied at different concentrations. The effect of the application on the germination capacity of the plants is shown in Table .6 (Supplementary Data), while