МРНТИ 87.15.03, 34.29                                                                            №4 (2020г.)

Uteulin K.R., Bekeshev M.K., Amrin N.V., Kurbatova N.V., Fedorina O.A., Stepanova E.Yu., Aldasugurova Ch.Zh., Atygaev A. B.

Purpose of the research was to study changes in biometric indicators in wild species of cereals Stipa sareptana A. Beck, Agropyron fragile (Roth) Nevski,  Artemisia terrae-albae Krasch in conditions of soil contamination with UDMH. Discussion of issues concerning possibility of regulating nitrogen nutrition in plants through UDMH introduction into soil. With respect to control, an increase in a total mass of aerial parts of wild cereal species Stipasareptana A. Beck, Agropyronfragile (Roth) Nevski and wormwood Artemisiaterraе-albaе Krasch cultivated for a year on soil samples contaminated with unsymmetrical dimethylhydrazine  (UDMH) in a dose of 10 mg per kg was established. Similar changes in biometric parameters (enhanced sprout formation) of cereal and wormwood plants are  caused by introduction of nitrogen fertilizers or UDMH into soil samples. UDMH
improves nitrogen nutrition of plants according to the scheme. Ammonia is absorbed by plants to form low molecular (amino acids, amides and nitrogenous  bases) and high molecular (proteins, nucleic acids) organic nitrogen forms. Effect of UDMH on plants is ambivalent.
Keywords: Stipa sareptana A. Beck, Agropyron fragile (Roth) Nevski, Artemisiaterraе-albaе Krasch , UDMH, biometrical parameters, nitrogen fertilizers.