Water balance in the aeration zone at the irrigation of red beets in the Russian Non-Chernozem area

Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, 49, Timiryazevskay St. Moscow, 127434 Russian Federation

^* Corresponding author: ubezborodov@rgau-msha.ru

Abstract

Basing on experimental data, we obtained the correlation results between the water balance elements in the aeration zone and the calculated layer at the irrigation of red beets on sod-podzolic soils. We provided a methodology to conduct research on experimental plots and in lysimeters. The water balances for the aeration zone in the lysimeters and for the calculated soil layer on the experimental plots are presented. It is shown that the amount of precipitation during the growing season 2010–2011 (97, 195 mm) and the sum of average daily air humidity deficits (12.1, 9.6 mb) influence water consumption (510, 498 mm) and irrigation norms (414, 318 mm). Soil moisture at the conditions of sod-podzolic soil of watershed territories in Moscow Oblast at sprinkler irrigation has a significant impact on all the components of the water balance, especially on the irrigation norm and water consumption of red beets. We stated the relation between the irrigation norm for red beets and the moisture content of the calculated layer of sod-podzolic soil. The correlation coefficient of the considered values is 0,996+0,031. A relation between the water consumption of red beets and the moisture content in the watershed sod-podzolic soil was obtained. The correlation coefficient of the considered values is 0,991+0,053.