| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive acidic treating agent which is high in an effect for exterminating reddish-brown scab fungi, diatom and so on. SOLUTION: This method for producing a formulation for culturing layer, characterized by wet-crushing at least one kind of hydrophobic organic acid selected from the group consisting of fumaric acid, adipic acid and succinic acid together with water or an acidic solution.
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