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Effect of Split-Application of Slow-Release Fertilizer on Yield and Quality of 2nd Harvested Tea Leaves  

Park, Jang-Hyun (Plant Environment Research Division, Chonnam Provincial ARES)
Kug, Yong-In (Biotechnology Research Institute, Chonnam Natl. University)
Choi, Hong-Kook (Plant Environment Research Division, Chonnam Provincial ARES)
Publication Information
Korean Journal of Medicinal Crop Science / v.11, no.3, 2003 , pp. 190-194 More about this Journal
Abstract
A field experiment was conducted to evaluate effect by split-application of slow-release fertilizer on the tea plant. The yield of the 2nd harvested tea leaves was not different to the slow-release fertilizer of two time split manuring had been doing Sep. or Mar. compared with the traditional manuring had been doing four time split manuring, but that of the slow-release fertilizer to one time split manuring in Sep. had decreased $12.5{\pm}1.5%$. In case of the 2nd harvested leave, the contents of chemical components related to quality such as total nitrogen, total amino acid were somewhat higher in the slow-release fertilizer (two time split manuring) than in the traditional manuring, but those of tannin, and caffeine were low, and those of chlorophyll, vitamin C, free sugar and theanine were not different to out of treatments. In scoring test, appearance and quality of green tea were more excellence in the two time split manuring compared with one time split manuring of slow-release fertilizer and with the traditional manuring (four time split manuring). Therefore, I thought that use of slow-release fertilizer be increased yield and quality of tea leaves, and improved efficiency nature of nitrogen, phosphate and potassium out of soil fertilizer components.
Keywords
2nd harvested tea leaves; slow-release fertilizer; split-application; yield and quality;
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