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THE DYNAMICS OF PRODUCTIVE MOISTURE AND WATER CONSUMPTION OF WINTER WHEAT UNDER CONDITIONS OF THE RIGHT-BANK FOREST-STEPPE OF UKRAINE

Author(s) Kyrylyuk V.P., Candidate of Agricultural Science, Associate Professor of Department of Forestry, Uman National University of Horticulture, Ukraine
Category General agriculture
year 2018 issue №1, 2018
pages 9-15 index UDK 631.554: 631.67: 633.11 (477.46)
DOI 10.31395/2310-0478-2018-1-9-15 (Link)
Abstract The article presents the results of studies of the dynamics of productive moisture in a soil and the use of a soil moisture of a spring barley in the terms of the Right-Bank Forest-Steppe. The main source of a moisture supply of a winter wheat are the precipitations during the growing season. That is why an analysis of weather conditions during 2010–2016 years was done. A moisture supply of a growing season affected the productive moisture reserves in a soil and water consumption of spring barley significantly. In a very wet and wet, periods of a growing season the productive reserves of moisture in a soil did not fall below optimal limits excluding short term periods. In semidry, dry and very dry growing seasons the productive moisture reserves in the soil did not exceed the optimal value only in spring. The total water consumption of spring barley in very wet growing seasons varied from 3015 to 3287 m3 / ha, in wet growing seasons – from 2794 to 3270, in medium wet growing seasons – from 2480 to 3020, in semidry growing seasons – from 2010 to 3080, in dry growing seasons – from 1760 to 2480 m3 / ha. In wet growing seasons the total consumption of precipitations fell from 70,0 to 88,8 %, according to the use of soil moisture from 11,2 to 30,9 %, and in dry growing seasons precipitations fell from 38,4 to 59,6 % and, respectively, from 38,4 to 59,6 % for the use of soil moisture. The coefficient of a water consumption of spring barley was the lowest in 2013 at the meteorological station Zhashkiv – 409 m3 / t (a growing season) and it was the highest in 2014 at Zvenyhorodka meteorological station – 737 m3 / t (a very wet growing season).
Key words winter wheat, available moisture, available moisture reserve, water consumption coefficient
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