Examinated results for bring light on the kinds of slow-release fertilizers are summarized as follows. Among slow-release fertilizers, the yields of the 3rd harvested tea leaves in the T₂ treatment was higher 5±3% with values of 306kb/10a than in other slow-release fertilizers treatment(284~300kb/10a), but was lower 2% than in traditional manuring(314kb/10a). The contents of chemical components such as total nitrogen, total amino acid, chlorophyll, vitamin C and free sugar in the slow-release fertilizers except T₂ treatment were slightly lower than in traditional manuring. However, the content of tannin and caffeine were slightly higer than in traditional manuring. The contents of theanine, glutamic acid and arginine as a good taste component of green tea were higher in the T₂ treatment than in the other slow-release fertilizers and traditional manuring. In scoring test, the slow-release fertilizers treatment were not different the traditional manuring significantly.
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