ECOTOXITY INDICES TO SULFONYLUREA HERBICIDES DIPHESAN AND MAGNUM IN LEACHED CHERNOZEM OF THE AREAS NEAR THE OB RIVER
The dynamic residual phytotoxicity for herbicides diphesan (chlorsulfuron + dicamba) and magnum (metsulfuron methyl) under conditions of the northern forest-steppe areas near the Ob River has been studied. The effect of the herbicides on soil microbial functional diversity in leached chernozem has been demonstrated. It has been established that the length of toxic action on soil microbiota and the soil persistence of magnum are more than those of diphesan. The possibilities have been revealed to reduce ecotoxicity of the herbicides studied by leaving the plant residues on the fields.