Selenium in the soil-plant system from some areas of Romania
2019
Lăcătușu, R. (National Research and Development Institute for Soil Science, Agrochemistry and Environment, Bucharest (Romania) | Stanciu-Burileanu, M.-M. (National Research and Development Institute for Soil Science, Agrochemistry and Environment, Bucharest (Romania) | Lăcătușu, A.-R. (National Research and Development Institute for Soil Science, Agrochemistry and Environment, Bucharest (Romania) | Lungu, M. (National Research and Development Institute for Soil Science, Agrochemistry and Environment, Bucharest (Romania) | Moraru, I. R. (National Research and Development Institute for Soil Science, Agrochemistry and Environment, Bucharest (Romania) | Preda, C. (National Research and Development Institute for Soil Science, Agrochemistry and Environment, Bucharest (Romania)
There are presented the total, and mobile selenium contents in seven areas from Romania covered with different soil types from Chernezems up to Luvisols. Have been highlighted specific zones with selenium deficiency, as Central and South Dobrudja and Făgăraș Depression, and zones with normal toward high selenium contents in areas coved by salted soils from Călmățui and Buzău valleys and the Danube Delta. În areas with selenium deficiency in soil have also been recorded, selenium deficiencies to the horned animals, ovines especially. A significant correlation has been established between mobile and total selenium contents in investigated soils. Also, the statistical correlation was recorded between mobile selenium content and soil pH on the one hand, and mobile phosphorus content on the other. The analyze of the selenium fraction extracted from the total selenium soil content revealed that the smallest part of total Se (8%) there was recover from the soil solution, and the highest (54%) there was in the residual soil fraction. The selenium contents analyses of the plants harvested from the investigated soils recorded results in accordance with the selenium contents from soils, also been highlighted deficiency values in wheat plants (green plants and grains) and in the pasture plants from the Făgăraș Depression.
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