Formation of a stable yield of grain crops in various meteorological conditions in the northern forest-steppe of the Tyumen region

Abstract

Siberian regions, including the Northern Trans-Urals, play an important role in the production of grain and feed. The main forage crops cultivated in the region are oats and barley. Both crops have a long history of cultivation and a wide range of advantages that allow them to be used for fodder, food and technical purposes. The share of these crops in the grain wedge of the Tyumen region is more than 40%.The creation and introduction of ecologically plastic varieties is a prerequisite for stabilizing grain harvesting. Varieties must combine good responsiveness to favourable growing conditions with resistance to limiting environmental factors. Modern technologies of cultivation of crops directly depend on climatic parameters: temperature, amount of precipitation and their distribution by months. Crop productivity can be controlled by studying and understanding the influence of the climatic potential of Western Siberia, the features of which this article is devoted to. In the current weather conditions 2015-2019. the yield of barley varieties Abalak, Acha and Vorsinsky 2 varied moderately (V = 12.2-17.8%) and ranged from 3.70 to 3.99 t/ha. Variety Chelyabinsky 99 turned out to be responsive to changes in air temperature and the amount of precipitation (V = 28.7%). The yield of oat varieties varied significantly from climatic indicators (V = 37.1-44.3%) and ranged from 1.93 to 3.38 t/ha. The variety Foma stood out especially with a maximum average yield of 3.38 t/ha and an average negative dependence on the SCC for May-September (r = - 0.29).