Studies on the Extension of Tea Plucking Period by the Plant Growth Regulator (Part 2):On the Effect of Retarded Plucking Period upon the Yield and Qualities of Tea in Each Season

概要

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The plucking time can be delayed one or two weeks by some chemicals in each season, as reported bfore, so the yield (green leaf) and quality of tea were examined according to the length of delayed period. As the chemical spraying in the first season can not keep its effectiveness in the second season, it is necessary to spray some chemicals in the second one to retard the growth of shoot. By this delaying method, the yield may be expected to increase in the first season, but has a tendency to decrease in the second season. And generally the later the plucking, time in the third season, the less the growth in the next year, but the number of shoot increases somewhat, so the yield can not be expected to decrease, so it is unprofitable to delay the growth extremely in the third season. The quality of tea can not be effected so remarkably in this test. So it will be favourable to apply this method in the plucking program in order to regulate the plucking time.
日本茶業技術協会の論文