Abstract
The article presents the results of laboratory studies on the effect of biopreparations Hu-mate 7+, Growth Matrix, Ecorost, Azotovite and Phosphatovite on the sowing qualities and growth parameters of terrestrial and underground plant organs of the winter wheat variety Nemchinovs-kaya 57. The work revealed the stimulating effect of the studied biological compounds on the initial growth processes of seedlings. A significant growth-stimulating effect on root system development was observed. The excess in the root length compared to the control was 0.7–21.0 mm (102–145%). The effectiveness of the biopreparations on increase of the linear size of terrestrial plant or-gans was lower. The differences in the sprout length compared to the control were 0.9–3.5 mm (91–118%). The increase in weight of 100 sprouts compared to the control was 0–1.1 g, with maxi-mum values in the variants Azotovit and Humate 7+. The maximum efficiency index was observed for the biopreparation Humate 7+.
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