The research was carried out in order to collect and analyze data on the prevalence and degree of development of soybean fungal diseases in the conditions of the Far East south. Long-term (2002–2021) monitoring surveys of the phytosanitary state of soybean crops were carried out in four agro-climatic zones of Primorsky krai (steppe, forest-steppe, southern and northern taiga). The results of the analysis indicate an unfavorable phytosanitary situation in the region. An increase in the prevalence of fungal diseases was noted in all zones. It was found that the development of root rot had an epiphytotic character and was in the range of 7.7–40.4 % on average over the years. Among leaf-stem infections, septoria prevailed annually, the prevalence of which reached 100 %, with an average intensity of development of 25.5 %. Cercosporosis and peronosporosis were also noted every year. The degree of development of these diseases was equal to 18.1 and 25.1 %, respectively. The results of phytopathological examination of soybean seeds showed significant infection with fusarium (25 %) and bacteriosis (3.3 %).

Vyborova Tatiana A., Bezmutko Svetlana V.

1. Rezvjakova S. V., Eremin L. P. Povyshenie urozhajnosti soi na osnove zashhity ot gribnyh boleznej [Increasing of soybean yield based on protection against fungal diseases]. Vestnik agrarnoj nauki. – Bulletin of Agrarian Science, 2021; 3: 77–83 (in Russ.).
2. Sinegovskij M. O., Kuzmin A. A. Sostojanie, perspektivy i fitosanitarnye riski proizvodstva soi [State, prospects and phytosanitary risks of soybean production]. Zashhita i karantin rastenij. – Plant Protection and Quarantine, 2020; 10: 7–12 (in Russ.).
3. Krivoshlykov K. M., Roshhina E. Ju., Kozlova S. A. Analiz sostojanija i razvitija proizvodstva soi v mire i v Rossii [Analysis of state and development of soybean production in the world and Russia]. Maslichnye kul'tury – Oilcrops, 2016; 3: 64–69 (in Russ.).
4. Vidal R. O., do Nascimento L. C., Mondego J. M. C., Pereira G. A. G., Carazzolle M. F. Identification of SNPs in RNA-seq data of two cultivars of Glycine max (soybean) differing in drought resistance // Genetics and Molecular Biology, 2012; 35: 331–334.
5. Korobejnikov A. S., Ashmarina L. F. Ocenka selekcionnogo materiala soi na kompleksnuju ustojchivost' k fitopatogenam [Evaluation of soybean breeding material for complex resistance to phytopathogens]. Vestnik Altajskogo gosudarstvennogo agrarnogo universiteta. – Bulletin of Altai State Agricultural University, 2021; 9: 5–9 (in Russ.).
6. Saenko G. M. Fitosanitarnyj monitoring osnovnyh boleznej soi v Krasnodarskom krae [Phytosanitary monitoring of the basic diseases on soybean in the Krasnodar region]. Maslichnye kul'tury. – Oilcrops, 2019; 3: 106–113 (in Russ.).
7. Korsakov N. I., Ovchinnikova, A. N., Mizeva, V. I. Izucheniye ustoychivosti soi k gribnym boleznyam [The study of soybean resistance to fungal diseases], Leningrad, VIR, 1979, 46 p. (in Russ.).
8. Chumakov A. E. Osnovnyye metody fitopatologicheskikh issledovaniy [The main methods of phytopathological studies], Leningrad, Kolos, 1974, 8 p. (in Russ.).
9. Compendium of Soubean Diseases, Illinois, American Phytopathological Society, 1982, 104 p.
10. Spravochno-informacionnyj portal "Pogoda i klimat" [Reference and information portal "Weather and Climate"]. Pogodaiklimat.ru Retrieved from https://www.pogodaiklimat.ru/history.php (Accessed 11 July 2022). (in Russ.).