Soil disease control method, soil for plant cultivation, and soil disease control agent

摘要

Provided is a soil disease control method that can easily suppress soil pathogens. A method for controlling soil diseases, comprising applying at least one polyhydroxyalkanoic acid having a structure represented by the following formula (1) to soil. [—CHR—CH 2 —CO—O—] (1) (wherein R is an alkyl group represented by CnH 2n + 1, and n is an integer of 1 to 15)