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THE INFLUENCE OF A MOISTURE SUPPLY OF A GROWING SEASON ON THE STOCK OF PRODUCTIVE MOISTURE AND WATER CONSUMPTION OF SPRING BARLEY UNDER CONDITIONS OF THE RIGHTBANK FOREST-STEPPE

Author(s) Kyrylyuk V.P., Candidate of Agricultural Science, Associate Professor of Department of Forestry, Uman National University of Horticulture, Ukraine
Shemiakin M. V., Candidate of Agricultural Sciences, Associate Professor of Department of Forestry, Uman National University of Horticulture, Ukraine
Category General agriculture
year 2017 issue №1, 2017
pages 18-26 index UDK 631.67:664.4:633.11 (571.61)
DOI
Abstract The article presents the results of studying of the dynamics of productive moisture reserves 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 spring barley are the precipitations during the growing season. That is why an analysis of weather conditions during 2010- 2015 years was done. A moisture supply of a growing season affected significantly the productive moisture reserves in a soil and water consumption of a spring barley. In a very wet, wet, and medium 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 3000 to 3339 m3 / ha, in wet growing seasons - from 2850 to 2572 m3 / ha, in medium wet growing seasons – from 2220 to 2830 m3 / ha, related to the average growing seasons – from 2137 to 2627 m3 / ha, in semidry growing seasons – from 2030 to 2610 m3 / ha, in dry growing seasons – from 2015 to 2572 m3 / ha, in very dry growing seasons – from 2099 to 2264 m3 / ha. In wet growing seasons the total consumption of precipitations fell from 67.1 to 99.1 %, according to the use of soil moisture from 0.9 to 32.9 %, and in dry growing seasons precipitations fell from 41.7 to 62.3 % and, respectively, from 37.7 to 58.3% 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 – 543 m3 / t (a semidry growing season) and it was the highest in 2014 at Uman meteorological station – 1609 m3 / t (a very wet growing season).
Key words spring barley, available moisture, available moisture reserves
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