This article discusses and analyzes data on air temperature in the northern, southern, central and Fergana Valley regions of Uzbekistan in various periods of observation. The influence of the duration of the development phase on the height of plants, the influence of air temperature in various periods on the formation of buds was assessed. It has been established that the air temperature in the evenings has a good effect on the formation of cocoons. At the same time, proposals and recommendations are given for the development of research in the relevant areas of the industry.