ORGANIC MATERIAL FERMENTATION AND DECOMPOSITION PROMOTER

PROBLEM TO BE SOLVED: To obtain a promoter being rapidly collapsed to disperse components when applied or plowed in a field, excellently promoting fermentation and decomposition of organic substance, by granulating a fertilizer containing a nitrogen component and a phosphoric acid component by using sodium lignosulfonate, a lignosulfonate except sodium lignosulfonate and water. SOLUTION: A nitrogen component and a phosphoric acid component are preferably a combination of calcium cyanamid and phosphoric, solution. A lignosulfonate except the sodium lignosulfonate is calcium lingo sulfonate. The content of the total of sodium lignosulfonate and calcium lignosulfonate is 0.5-10 wt.% and preferably a promoter contains more the former than the latter. The ratio of the nitrogen fertilizer and the phosphate fertilizer is 15-35 wt.% of the nitrogen fertilizer and 65-85 wt.% of the phosphate fertilizer. The amount of water for granulation is preferably 7-10 pts.wt. based on 100 pts.wt. of the mixed fertilizer. The promoter has excellent handleability in application, transportation, storage, etc., is rapidly collapsed and exhibits excellent effect on promoting action on fermentation and decomposition after the application.