Assessment of the combined pesticide and cadmium load on the soil using higher plants

The multicomponent nature of agroecosystem pollution complicates the effectiveness ecotoxicological control. danger combined pesticide and cadmium soil load was investigated in laboratory conditions using agricultural plants (test crops). aim study an integral assessment complex impact contamination on wheat Triticum aestivum L. by biotesting. widely used pesticides agriculture were tested: systemic fungicides Azimut (a.i.: tebuconazole, 125 g/dm³ + triadimefon, 100 g/dm³), Classic 250 g/dm³) soil-acting herbicide Extrabit S-metolachlor, 960 g/dm³). levels Cadmium accumulation (by inductively coupled plasma atomic emission spectroscopy) active ingredients high-performance liquid chromatography with a mass detector) determined. It found that exceeding rate application leads to their plants. At (3-fold maximum allowable concentration, MAC) associated pesticide, increase is observed (tebuconazole 1.85 1.47 times for Classic, respectively, S-metolachlor Extrabit) compared single pesticide. In addition, phytotoxicity noted experiment. Thus, fungicide Extrabit, decrease initial growth (length roots seedlings) more than 40 % found, which indicates level above average. concluded new formulations (including pesticides) should be tested toxicity relation higher This important development countermeasures reduce plants, especially heavy metals. Key words: biotesting, action, pesticides, cadmium, phytotoxicity,