Removal of radionuclides 137Cs and 90Sr by oats from sod-podzolic loamy sand soil | Вынос радионуклидов 137Cs и 90Sr из дерново-подзолистой супесчаной почвы различными сортами овса
2011
Tavrykina, O.M. | Dovnar, V.A., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
In the conditions of the Republic of Belarus in course of the research there was realized evaluation of the most popular recognized varieties of oat (Avena sativa) by their yielding capacity, degree of 137Cs and 90Sr accumulation for the selection of the most efficient varieties which promoted lowing of internal radiation doses in population. In the course of the study there was analysed data on crop yield of oat, specific activity of 137Cs and 90Sr in grain and straw, total removal of radionuclide 137Cs and potassium, 90Sr and calcium. The research was realized in field conditions in a region which was directly injured from action of Chernobyl Nuclear Power Plant – at a Collective Farming Unitary Enterprise 'Strelichevo' (Khojniki, Gomel region, Belarus). The experiments were carried out on sod-podzolic light loamy soil, underlaid from the depth of 0.7 m with moraine clay loam. Agrochemical characteristics of trial plot soil were the following: pH (KCl) - 5.95, mobile phosphorous forms P2O5 (0.2n HCl, according to Kirsanov) - 197 mg/kg and K2O (0.2n HCl, according to Kirsanov) -288 mg/kg of soil, exchangeable calcium forms (Ca) (1 M KCl, according to Mazaeva, Neugodova ) - 542650 mg/kg and Mg - 94-176 mg/kg of soil, humus content (0.2n K2Cr2O7, according to Tyurin) – 1.9%. Soil contamination density by radionuclide 137 Cs – 320 kBk/square m, 90 Sr – 30 kBk/square m. Proceeding crop - meadow clover (Trifolium pratense L.). As a result of realized research there was revealed data of zoning and potential five oats varieties at its cultivation on lands contaminated by radionuclide 137Cs and 90Sr. Research results showed that on contaminated onl;y with 137Cs it was more efficient to grow Chakal and Alf oat varieties, and for soils contaminated only with 90Sr the best varieties were Dukat and Alf. In case of soil contamination with both radionuclides – Alf.
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