Preliminary Investigation Report on Soybean Root Rot in the Eastern of Heilongjiang Province

In order to confirm the damage degree of soybean root rot in the eastern of Heilongjiang province,investigation of soybean root rot at the cities and farms belonging to the eastern of Heilongjiang was done in 2013. The samples of soybean root rot were collected at the same time. After fungal isolated and cultured from samples of soybean root rot,8 species belonging to3 genera connected with soybean root rot were identified. The predominant genus was Fusarium with isolation rate of 31. 85%.The predominant species was Fusarium oxysporum account for 52. 34% of the total Fusarium species. Investigation results showed that incidence and disease index of soybean root rot were higher in block with low terrain and high water content.