METHOD FOR ASSESSMENT OF BIOLOGICAL ACTIVITY AND TOXICITY OF SOIL AND TECHNOGENIC SOILS Russian patent published in 2017 - IPC G01N33/24 

FIELD: ecology.

SUBSTANCE: assessment of biological activity and toxicity of soil is provided on the basis of cress Lepidium sativum L. wealth, grown in soil samples and under test-control on vermiculite with a Knop nutrient solution. The assessment is carried out according to the development indices of 10-12-day plants, while the plants height and weight is compared, as well as the redox activity of the plant extract, which increases with the toxicity of the root medium. Where the decline of the cress indices or the increased redox activity of the plant extract by 10-30% shows a satisfactory soil condition, reduction by 30-50% - poor condition, at the level below 50% - environmentally hazardous condition.

EFFECT: simplified assessment method, reduced test time and ensured accuracy of the results for statistical data processing for assessment of the quality of soil in urban and industrial areas of various technogenic soil, functioning as soils in urban and industrial areas.

16 dwg, 1 ex