The present invention relates to a method of manufacturing the organic fertilizer with the fermented seasoning Busan mother liquor, fermented seasonings Busan mother liquor 55-80% by weight, 6-15% by weight of calcium oxide, sulfate heating and stirring a mixture of iron 13-32% by weight which induces the reaction dried to a moisture content below 15%, and characterized in that following crushing, whereby through the production method of the present invention, reduce the cost of energy can produce a fertilizer manufacturing costs low, through the production method of the present invention the obtained fertilizer is, the quality is excellent by containing a large amount of ammonium nitrogen component is relatively low, obtain soluble iron components.
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