Barley yield depending on agricultural technologies on sod-podzolic soil of the Republic of Mari El

Introduction. Today, for the agrarians of the Republic of Mari El, an important task is the cultivation of environmentally safe crop production, where barley occupies the fourth place (after rice, wheat, corn) and rep-resents an important food, technical and fodder crop. The deterioration of the phytosanitary condition of grain agrocenoses due to changes in their structure and the introduction of new tiilage technologies, led to a decrease not only in grain quality, but also in yields, as well as to the growth of phyto-pathogenic mycobiota in the soil and on plants. Therefore, at present it is necessary, first of all, to direct all elements of agrotechnical measures to ensure the reduction of the soil infectious background, increase humus and crop yield stability. The purpose of the article is to identify the elements of agricultural technologies to increase the spring barley yields in the condi-tions of the Republic of Mari El. Materials and methods. The research was conducted in 2019−2021 in the con-ditions of field experience at the Mari State University. The soil of the site was sod-podzolic medium loamy, the task was to assess the productivity of spring barley with different elements of agricultural technologies. In the experiments, the following was determined: the yield (the method of direct harvesting, by plots) and mathemati-cal data processing (the method of dispersion). The results of the discussion. The use of mulch, tillage and bio-logical protection agents has a positive effect on the yield of barley. The highest yield on average for 3 years was on the variant of the experiment with the use of straw mulch and soil disking (2.85 t/ha) and on the variant with seed treatment with Biagro-Gum-B (2.79 t/ha) and crop treatment with Pseudobacterin-2 (2.64 t/ha), an increase in grain yield growth compared with the control was 26.7% and 14.8 % respectively. Conclusion. When cultivating barley in the conditions of the Republic of Mari El on sod-podzolic soil, the use of straw mulch with soil disking and complex plant protection with biological preparations increases the yield by 1.15−1.3 times.