Method of the Renewal of the Tea Plant in Cold Locality

概要

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1) These several dispositions to renew the tea plants were performed to make clear the process of the change of the yield and its constituent after these dispositions in cold locality. 2) The light trimming was made on the position, 5-10 cm. under from the plucking surface at the end of May, then the first crop plucking had finished. In a year after the light trimming, we could pluck the first crop and the second crop. And the yield showed about 80-9000 of that of the tea plants not disposed. In three years, it showed 100%. 3) The light trimming had such a little economic loss that we could enforce it easily for the purpose of the control of height of plant and the renewal of those upper branches in cold locality. 4) Regarding the rate of the restoration, the pruning is more rapid than the coller pruning. In four years after the renewal, the yield of the pruning showed about 80-90% of that of the tea plants not disposed, and in the case of the coller pruning, it showed about 60%. The pruning and the coller pruning takes along time to restore, so these renewals must be enforced intentionally little by little. 5) About the time of the coller pruning, it is better to enforce at the beginning of March than at the end of May. But the coller pruning at the end of May is convenient, because the first crop-plucking has finished in this season.
日本茶業技術協会の論文