WAYS TO REDUCE THE ENTRY OF RADIOCEZY OF THE CHERNOBYL TRACE INTO PLANT PRODUCTION
The article is devoted to the study of the influence of local natural resources on the accumulation of radiocaesium by agricultural plants. Questions of radiation safety of the population of the Kaluga region remain relevant for many decades. This problem is particularly acute for personal subsidiary farms, in which centralized agrotechnical and agrochemical measures aimed at cleaning up the soil contaminated with radionuclide were not conducted. The purpose of this study was to develop measures to ensure the production of products that are normatively pure by content of radio cesium in the private sector of the agroindustrial complex. We used comparative analytical, instrumental and statistical methods. Studies were conducted during 1997-2016 on the basis of SPK "Forest Glades" of the Ulyanovsk district of the Kaluga region. Local resources were used for the experiments: activated sludge from a biological pond near the village of Ulyanovo, and ground thistle from CJSC Sorbent, for which there are positive sanitary and hygienic conclusions of the Kaluga Sanitary and Epidemiological Surveillance Center. According to the results of the analysis of the dynamics of changes in the specific activity of herbage in natural forage lands and cattle milk, a 7-8 year period of half-time reduction in the level of contamination of agricultural products was established, due to increased binding strength and physical decay of cesium-137. The seasonal dynamics of reducing the content of radiocaesium in hay in a meadow ecosystem and milk of cows from April to July during the growing season has been established. The radiomeliorative capacity of activated sludge and tripoli has been proven ground during the production of private sector products.