Object of research – development and substantiation of the environmentally safe systems for protection against fungoid diseases of broomcorn millet in Ukrainian Polissia.
Purpose of research – to develop environmentally safe systems for protection of broomcorn millet agrocoenosis against fungoid diseases in Ukrainian Polissia based on the specification of the species composition of the agents of disease, ecological and biological peculiarities of their development and harmfulness.
Methods of research – field, laboratory, economic-mathematic, mathematic-statistical.
Theoretical and practical results – The main theoretical conclusions and generalizations, suggestions and recommendations presented in the thesis deepen the theory and practice of cultivating competitive grain products of broomcorn millet.
The scientific value of the thesis paper is that the results of the research establish the basis for further enhancement of theoretical and methodological principles and practical recommendations for the environmentally safe protection of broomcorn millet agrocoenosis against the complex of agents of fungoid diseases in order to obtain high-quality grain.
The obtained experimental results of the research are taken as the basis for the integrated and organic systems for protection of broomcorn millet against mycosis in the Ukrainian Polissia, which allows for stabilizing the phytosanitary state of agrocoenosis and increasing the crop capacity in compliance with the requirements of environmental protection.
The integrated system for protection of broomcorn millet ensures the retention of grain yields at the level of 0,77 t/ha, organic 0,38 t/ha. The profitability of cultivation in the presence of the integrated system amounts to 30,9 %, for the organic 47,2 %.
Novelty – The urgent problem of environmentally safe protection of broomcorn millet against the complex of fungoid diseases in the Ukrainian Polissia was solved on the basis of experimental research into the identification of a pathogenic complex, ecological and biological peculiarities of the development of the species composition of the agents of disease as well as the implementation of protective measures.
According to the results of the scientific research for the first time:
– the species composition of the agents of fungoid diseases of broomcorn millet is specified, the dominant species, their ecological and biological peculiarities and harmfulness were determined;
– tha agent of Piricularia (leaf form) was found on crops in Ukraine – Magnaporthe grisea (T. T. Hebert);
– the influence of ecological factors on the dynamics of development of fungoid diseases of broomcorn millet was investigated;
– the 3D forecast models of the development of dominant fungoid diseases of broomcorn millet were elaborated depending on the abiotic factors;
– the level of affect of the crop cultivars with the agents of fungoid diseases was established;
– the influence of norms and terms of seeding of broomcorn millet on the curbing of mycosis development was determined;
– the efficiency of application of modern pesticides of biological and chemical origin and plant growth regulators for protection of broomcorn millet against fungoid diseases was studied;
– the environmentally safe integrated and organic systems for protection of broomcorn millet against a complex of fungoid diseases were developed and theoretically substantiated;
– the residual content of pesticides in the grain of broomcorn millet in the presence of the integrated protection system was established;
– ecological and economic application of developed systems for protection of broomcorn millet in order to curb the development and harmfulness of mycosis was substantiated.
Degree of implementation – The results of the research passed the production inspection and were implemented at agricultural enterprises SFG (Agricultural Farm Enterprise) «Vega» (5 ha), SFG (Agricultural Farm Enterprise) «Rodyna» (5 ha), POSP (Private Agricultural Farm Enterprise) «Zoria» (5 ha), FG (Farm Enterprise) «Shegeda» (3 ha).
Field (sector) of application – Research results are a significant contribution to the theory and practice of agriculture and can be used for further scientific research into the issues of protection of broomcorn millet against the agents of fungoid diseases; by agricultural commodity producers of various forms of ownership. Theoretical, methodological and practical recommendations for the development can be used by the Ministry of Agrarian Policy and Food of Ukraine, the Ministry of Economic Development and Trade of Ukraine, scientific institutions of the National Academy of Sciences of Ukraine, agricultural enterprises and their associations, in the educational process of higher educational institutions of agrarian profile.
