In order to clarify the possibility of occurrence of apple replant disease and the severity of it in Kyungbuk area, 23 apple orchard soils older than 20 years were collected and growth response of apple seedlings in the soil was tested by soil fumigation. Some factors concerned with apple replant disease in some cases were also checked. The results were as follows. 1. Plant height of apple seedlings was significantly increased in 6 apple orchards and up to 38% in a most conspicuous case by soil fumigation. 2. Fresh weight of aboveground part(except leaves), underground part and whole plant(except leaves) of apple seedlings was significantly increased in 10,4 and 9 apple orchards, respectively by soil fumigation. The response of soil fumigation was pronounced in fresh weight of aboveground part of apple seedlings, more than 50% increase in 5 apple orchards. 3. The effects of available copper and arsenic content in soil and soil nematodes population on the plant height and fresh weight of apple seedlings were not recognized as important factors causing apple replant disease. 4. Effect of soil PH on the occurrence of apple replant disease was not recognized.