Perspectives of oilseeds use cultivars grown on radioactively contaminated territories

Abstract

The value of 137Cs specific activity under fertilizers application and without it for green mass and seed of oilseeds grown on soddy — podzolic sandy soils of Polissya is considered. The highest specific 137Cs activity in green mass and grain was observed for white mustard, and the least amount fof sunflower. It was established that the differences in the 137Cs accumulation in green mass in accordance with the established number of oilseeds without fertilizing are up to 1.4 times for white mustard and oil radish, 1.7 times for white mustard and sunflower; the difference in grain is up to 2.5 times for white mustard and oil radish, up to 8.1 times for mustard white and sunflower. As for the differences in the 137Cs accumulation by green mass in the row of investigated oilseeds, the following difference was observed for mineral fertilizers N30P60K90: 1.3 times for white mustard — oil radish; 1.9 times for white mustard — sunflower; the difference in grain is established: up to 2.2 times for white mustard — radish oil, up to 7.9 times for white mustard — sunflower. By the value of the 137Cs transfer factor in the «soil-plant» line, the following ranked series of investigated oilseeds was obtained in increments: Sunflower (seeds) (0.18) < Sunflower (green mass) (0.25) < Oil of radish (green mass) (0.31) < Mustard white (green) (0.44) < Oil on canvas (seeds) (0.59) < Mustard white (seeds) (1.46). 137Cs specific activity in the crops green mass indicate a characteristic increase in theradionuclides accumulation and the inappropriate nature of products for animals feeding, but also the possibility of it’s usage like a siderate. The 137Cs specific activity level in seeds in all variants significantly exceeds the standards, which confirms the need for its processing on the oil.