| To evaluate effects of bio-organic fertilizer GSJ-1 on distribution of soil potato scab pathogens, and also on the potato scab bio-control, the content of soil scab pathogens was determined, and the disease observation in field was carried out. The results showed that the potato scab pathogens of continuous cropping soil (CK) were concentrated to rhizosphere before flowering period, and then moved to stolon and tuber consequently. The bio-organic fertilizer GSJ-1 significantly reduced the content of soil scab pathogens by 19.6%～74.9% compared with the continuous cropping soil, and also changed the orders of the distribution of potato scab pathogens in soil. The order in continuous cropping soil had been as the following: rhizosphere＞non rhizosphere, which was turned into rhizosphere |