Microbial protective agent, coating agent containing the microorganism protective agent, coated seed using the same, and method for producing the same

摘要

A microbial protective agent comprising a rock powder for suppressing the killing of useful microorganisms, and a coated seed comprising a plant seed coated with the microbial protective agent and useful microbial cells. The coated seed is produced by immersing the seed in a solution in which a microbial protective agent made of rock powder and microbial cells are suspended. The microbial protective agent protects useful microorganisms without becoming a nutrient source such as harmful microorganisms, for example, pathogenic bacteria that cause plant diseases.