Productivity of winter wheat in the northern Steppe of Ukraine depending on weather conditions in the early spring period
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The objective of the research was to develop scientific and methodological bases for adapting the technology of growing winter wheat depending on weather conditions in early spring. Winter wheat was grown at different sowing dates. It is established that the reserves of productive moisture in the soil at the time of renewal of spring vegetation are crucial for the formation of winter wheat harvest. After worse forecrop, the impact of moisture on productivity reaches 49.7–66.4%. The later the renewal of spring vegetation of winter wheat is, the lower the productivity of the crops. The shorter the period from the date of transition of the average daily air temperature above 0 °C to the beginning of active vegetation of plants is, the higher the productivity of winter wheat crops. Therefore, depending on weather conditions of early spring period and the time of renewal of spring vegetation of plants, it is necessary to adjust the technology of growing winter wheat during the spring-summer period.