Agriculture and forestry

Razanov Serhii Fedorovych – Doctor of Agricultural Sciences, Professor of the Department of Forestry and Horticulture, Faculty of Ecology, Forestry and Horticulture, Educational and Scientific Institute of Agricultural Technologies and Nature Management of the Vinnytsia National Agrarian University  (21008, Vinnytsia, Sonyachna str. 3; e-mail: razanov@vsau.vin.ua).

Kutsenko Mykola Ihorovych – graduate student of the department of ecology and environmental protection of Vinnytsia National Agrarian University. (21008, Vinnytsia, Sonyachna str. 3; e-mail: nicolaskutsenko@gmail.com).

The article presents the results of studies of accumulation of vegetative mass of cesium-137, potassium-40, radium-226 and thorium-232 of narrow-leaved lupine and sainfoin sandy, grown in the conditions of northern Polissia with a soil pollution density of up to 10 Ki/km2. The accident at the Chernobyl nuclear power plant led to the contamination of grounds with various radioactive substances, which create certain problems in crop production. Vegetation plays an important role in the translocation of chemicals in the environment, in particular, in the system of bases - plants. From the base of vegetation, trophic chains pass not only nutrients, but also various toxic substances. The removal of these toxicants with justification into the vegetation has an important hygienic value, as it impairs their purification from pollution. Lupine, thanks to the developed root system, is able to effectively absorb nutrients from the ground, especially under optimal moisture conditions. Asparagus is characterized by drought resistance and a long vegetation period. The content in the vegetative mass of sainfoin sandy and narrow-leaved glass lupine for cesium-137 89.43 Bq/kg and 761.66 Bq/kg, potassium-40 – 761.33 Bq/kg and 964.0 Bq/kg, radium-226 – 22.53 Bq/kg and 82.0 Bq/kg and thorium-232 – 61.0 and 101.33 Bq/kg, respectively. Lupine was found to accumulate radionuclides at higher rates, including 8.5 times, 1.26 times, 3.63 times, and 1.66 times. 293,422 Bq of isotopes are removed from the area of 1 ha of sainfoin with vegetative mass. While with the vegetative mass of narrow-leaved lupine, the total number of radionuclides is 962,065, of which 39.8% - with cesium-137, 50.3% - with potassium-40, 4.3% - with radium-226 and 5.3% - with thorium- 232. The total amount of radionuclides in the vegetative mass of the sainfoin sandy is 934.29 Bq/kg, 2.0 times more in the narrow-leaved lupine.

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