METHOD FOR MANUFACTURING ORGANIC FERTILIZER

PROBLEM TO BE SOLVED: To provide a method for manufacturing organic fertilizer, which can convert large quantities of livestock excrement into organic fertilizer efficiently and over a short period of time by using housefly larvae.SOLUTION: The method for manufacturing organic fertilizer includes: a fodder preparation process in which rice hulls 54 and bean curd refuse 55, which promote the feeding habits of larvae, are mixed into excrement 18 to prepare fodder 19; a fodder storage process in which a predetermined quantity of fodder 19 is stored in a fodder storage tray 20; an egg introduction process in which housefly eggs 51 are introduced into the fodder 19 stored in the storage tray 20; and a fertilizer base material preparation process in which the fodder 19 stored in the storage tray 20 is fed to the larvae hatched from the eggs 51 to raise the larvae, and the fodder 19 is subjected to enzymatic breakdown inside the larvae in the process of raising the larvae and is excreted from the larvae to produce organic fertilizer.