%0 Journal Article %T CHANGES IN THERMAL RESOURCES OF THE VEGETATION PERIOD AND PRODUCTIVITY OF SPRING WHEAT IN THE CONDITIONS OF THE MIDDLE VOLGA REGION %A Serzhanova, A.R. %A Gilyazov, M.. %A Shaykhutdinov, F.. %A Serzhanov, I.. %A Daminova, A.I. %K spring wheat (Triticum aestivum), gray forest soil, yield, air temperature, sum of effective temperatures, yield correlation %J Vestnik of Kazan State Agrarian University %D 2023 %N 18 %P 6 %I Kazan state agrarian University