Research progress on pathogenicity and integrated control of Rhizoctonia solani Kühn to potato

Potato black scurf, a soil-borne disease with Rhizoctonia solani Kühn as the causal agent was studied, which was characterized by fixed propagation in soil and is difficult to eradicate．It has occurred in different degrees in major potato growing areas in China and has brought serious influence on commercial value of potato．The symptoms, anastomosis groups, distribution, and occurrence regularity of potato black scurf were summarized, and identification method and pathogenic mechanism of pathogenic bacteria were discussed．Agricultural control, breeding resistant varieties, biological control, and other measures were proposed to provide a theoretical basis for further in-depth research and control of potato black scurf．