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Ways to improve the state of corn agrocenosis in the conditions of contamination heavy metals

Work number - M 45 FILED

Presented by the National Scientific Center «Instituteof Agriculture of the National Academy of Agrarian Sciences of Ukraine»
Author:Dovbash Nadiia Ivanivna
The work is devoted to the study of changes in agrochemical and biological properties of gray forest light loamy soil under conditions of stable pollution of ecotopes with lead, cadmium, zinc in the conditions of the Right Bank Forest-Steppe of Ukraine.
The aim of the work is to establish the direction of change in the agrochemical and biological characteristics of gray forest soil under conditions of stable contamination with heavy metals and the possibility of the safe use of contaminated areas in agriculture for growing corn for grain.

For the first time in the forest-steppe zone, the following features were revealed: changes in the physical and chemical, agrochemical, and biological characteristics of gray forest soils with long-term stable complex pollution by lead, cadmium, and zinc of ecotopes; the structure of the fund of zinc, lead, cadmium and the intensity of their radial migration in the profile of gray forest soil under different heavy metal contamination is established; the peculiarities of the formation of the photosynthetic apparatus of corn plants for grain under the conditions of the pore-natural content of lead, zinc and cadmium in the soil are elucidated; the possibility of effective use of territories subject to stable heavy metal contamination in agriculture has been substantiated.

The methods for remediation of areas contaminated with heavy metals have been improved by growing corn for grain under the conditions of a gray forest soil typical of the Forest-Steppe Zone.

The theory of the mechanism of the assimilation of chemical elements by plants from the soil in the context of the translocation of heavy metals in the soil – plant system and the effectiveness of the action of root barriers has been further developed.

Developed recommendations to improve the efficiency of use of agricultural land contaminated by lead, cadmium, zinc. Obtaining safe crop production in contaminated areas is possible when growing corn for grain. In the conditions of the Right-Bank Forest-Steppe with a lead content of up to 100 mg/kg, zinc up to 50, cadmium up to 2.0 mg/kg of gray forest soil, it is possible to obtain 7 t/ha of grain of mid-early corn hybrids (FAO 240), which meets the standards of feed and technical raw materials.

The research results have a high scientific and practical value in the field of agriculture and meet modern requirements for the scientific support of the agro-industrial complex of Ukraine.
Number of publications:21 scientific papers, including 7 in specialized editions of Ukraine (of which 3 are in editions listed in international scientometric databases), 13 are materials of scientific and practical conferences, 1 is the patent of Ukraine for a utility model. On this topic defended his thesis.