Roman Olepir

Roman Olepir
Poltava State Agrarian Academy · Agrarian Academy, Ukraine, Poltava

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5
Publications
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Publications

Publications (5)
Article
The article presents the results of research on the assessment of modern climate change and the impact of weather conditions on the yield of main field crops when using different feeding systems and tillage. It was established that during 1991-2020 the average annual air temperature in the region increased by 1,1oC, and the annual precipitation dec...
Article
Purpose. To determine the long-term effect of a complex of factors (anthropogenic and natural) on the productivity of sugar beet for a significant period and the level of pest reproduction. Study of short crop rotations. Methods. Field, laboratory, statistical. Results. The uneven distribution of precipitation during the sugar beet growing season h...
Article
Full-text available
Aim. To determine the impact of long-term effect of the complex of factors (anthropogenic and climatic) on the soil fertility, the change in the phytocenosis of weeds and the productivity of winter rye at permanent cultivation. Methods. The content of nitrogen in soil was defi ned by Kornfi eld’s method, phosphorus and potassium – according to Chir...

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