SCREENING OF NEW SOYBEAN CULTIVARS AND CULTIVAR SAMPLES TOWARDS COMMON DISEASES IN KAZAKHSTAN

As part of the strategy to diversify cultivated areas and increase the profitability of agricultural enterprises, oilseeds, including soybeans, represent a promising direction for the development of the agricultural sector in the country. Kazakhstan is among the top 20 soybeanproducing countries globally. However, significant damage to soybean crops in the region was affected primarily by fungal diseases, leading to 20-50 % yield losses. This article presents field experiments conducted in the arid submontane agro-climatic Zhambyl region, focusing on the resistance of the global soybean collection. The study used 276 soybean varieties from Eastern Europe, Western Europe, North America, East Asia, and Kazakhstan. Screening of world soybean collection from 25 countries for field resistance towards various pathogens demonstrated a total of 197 soybean sources resistant to Cercospora sojina, 260 resistant to Septoria glycines, 76 resistant to Pseudomonas solanacearum, and 174 resistant to Peronospora manchurica. Among the tested samples, 24 soybean varieties of different origins exhibited high resistance to all pathogens, accounting for only 8.79% of those evaluated in the field during this experiment. These findings highlight the importance of identifying and utilizing disease-resistant soybean varieties to mitigate the impact of fungal diseases and improve soybean production in the region.

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