摘要：

VasileVa, V., 2014. Changes in chemical composition of soybean [glycine max (l.) Merrill] plant after presowing treatment of seeds with insecticides. bulg. J. Agric. Sci ., 20: 1119-1122 Changes in some charatcteristics of chemical composition of aboveground and root mass of soybean after presowing treatment of seeds with insecticides were studied in a pot trial carried out at the institute of Forage Crops, Pleven, Bulgaria (2003-2004). soybean cultivar Pavlikeny 121 was used and the next insecticide preparations were tested: Gaucho 600 F s (600 g.l -1 imidacloprid) (1, 2 and 3 l .100 kg -1 seeds), Carbodan 35 s T (350 g.l -1 carbofuran) (1, 2 and 3 l .100 kg -1 seeds), and Promet 400 Cs (400 g.l -1 furathiocarb) (3 l .100 kg -1 seeds) (standard). it was found that Gaucho 600 F s at the dose of 1 l.100 kg -1 seeds increased crude protein content in aboveground mass by 14.0 g.kg -1 dry matter (DM) and in root mass by 22.6 g.kg -1 DM as compared to untreated control. Crude fiber content in aboveground mass increased by 28.0 g.kg -1 DM when Carbodan 35 sT at the dose of 3 l.100 kg -1 seeds was applied and decreased in root mass by 74.5 g.kg -1 DM for the same insecticide at the dose of 2 l.100 kg -1 seeds. Calcium content in aboveground mass was by 1.9 g.kg -1 DM higher as compared to untreated control for Gaucho 600 Fthe dose of 1 l.100 kg -1 seeds. When Carbodan 35 s T at the dose of 1 l .100 kg -1 seeds was ap plied, phosphorus content in aboveground mass increased by 0.20 g.kg -1 DM and in root mass by 0.28 g.kg -1 DM for Gaucho 600 Fs at the dose of 1 l .100 kg -1 . Chemical composition of plant biomass did not include the amount of possible residues after

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