Restoration of contaminated soils by agricultural crops Available to Purchase

The development of criteria for assessing soil degradation and toxicity, as well as methods for restoring the productivity of soils contaminated with heavy metals, is currently an actual task. It has been shown that the use of agrotechnical measures makes it possible to reduce the content of heavy metals in the surface layer of soil by transferring them to plant roots. In particular, during the implementation of agrotechnical measures, millet was planted. During the period of the first sowing in the controlled soil variants, the following accumulation of heavy metals in the roots of the plant was established: Ni – 7.4 mg/kg, Cr – 39.5 mg/kg, Pb – 7.2 mg/kg, Cd – 0.32 mg /kg. Cr accumulated in the plant structure during the second planting in a volume of 36.4 mg/kg, and during the third planting - 33.7 mg/kg. These data mean that the amount of heavy metals in the soil is decreasing. The accumulation of Pb was 7.2→8.7→6.2 mg/kg, and an accumulation similar to that of Ni was observed.