Influence of hydrothermal coefficient on the development and spread of spring wheat diseases

The results of eleven-year-long (2008-2018) observations under the conditions of the East Kazakhstan Region over the development and spread of leaf infections. According to the results of observations, the dependence of the development and spread of leaf infections in spring wheat crops on the weather conditions was determined. During the observation period, Helminthosporium leaf blotch was the most common one; the disease occurred annually. Powdery mildew had the least distribution and development.