Agrometeorological characteristics of spring barley in the Northern Trans-Urals

Tyumen Scientific Centre SB RAS, Tyumen, Russia

^* Corresponding author: averyasova-uliy@mail.ru

Abstract

The purpose of this work was to study the effect of air temperature on the duration of the growing season in Western Siberia (Russia). Material and methods: phenological observation of 6 varieties of spring barley (Abalak, Zolotnik Naran, Tandem, DLA-14 and Pasadena) was carried out for the period from 2016 to 2020. The sensitivity of varieties to temperature conditions is determined. The optimal average daily air temperature during the interphase periods was established: shoots-heading 31-35 days, and heading-ripeness 34-37 days. The optimal sums of effective temperatures above 10 ºC, necessary for the growth, and development of spring barley varieties, have been calculated. The Abalak variety was distinguished by a narrow temperature range in both interphase periods (the first period - 0.7 ºC; the second - 2.3 ºC), which indicates a low plasticity of this variety. The agrometeorological characteristic obtained from the data of field experiments can be used to identify the areas of cultivation of varieties, as well as for a scientifically based assessment of the territory in relation to the variety. The optimal, minimum air temperatures for each variety are calculated. The sensitivity of varieties to temperature changes was studied.