The dependence of the duration of the germination phase of spring barley on the temperature regime of the soil.

Abstract

The article draws attention to a particularly sensitive period of spring barley development, which directly relates to the germination phase. On the basis of the obtained data, it was established that the germination phase of spring barley during the studied sowing dates is 10.03; 20.03; 30.03; 9.04. 19.04 is characterized by a decrease in the duration of the period from sowing to seedlings for each subsequent sowing period. It was established that soil temperature is an important factor influencing the duration of spring barley germination. Correlation coefficient r = -0.97 was established accordingly. The dependence of the onset of the tillering phase in spring barley plants on the sowing dates was revealed. Accordingly, the barley plants of the first sowing period entered the tillering phase earlier by 13-15 days compared to the third sowing period and by 22-25 days compared to the April 9 sowing period. This is a rather important advantage, since the duration of the tillering phase will be the longest in barley plants of the first sowing period, which will contribute to the implementation of the first and second elements of the grain yield structure