Responses of "clonal tea" to location of production and plucking intervals
Tea is cultivated in diverse environments causing yield and quality differences in its beverages. To maximize yields and quality, agronomic practices should be optimised. But agronomic recommendations are uniform in different environments in Kenya despite variations in the growth factors responsible for changes in yields and quality. Plucking is labour intensive and a costly agronomic input in tea production.
Trials were conducted for ten years in five tea growing regions in Kenya to assess yields and quality responses of clone BBK 35 tea to location of production and harvesting intervals. There were different (P≦ 0.05) yields in the various locations, with significant (P≦ 0.05) interaction effects between locations and harvesting intervals. Yields declined in three out of five regions but increased in one location with longer plucking intervals. Yields in a geographical area of production can not be used to estimate its expected yields in other tea growing areas. Black tea theaflavins varied significantly (P≦ 0.05) with geographical area of production, but other plain tea quality parameters did not vary with location. It is therefore possible to make similar black teas with similar plain tea quality parameters except theaflavins from all tea growing regions of Kenya. Tea quality improved with short plucking rounds. One way to maximize tea quality is through shortening harvesting intervals. It is necessary to establish optimal harvesting rounds in the different tea growing regions in Kenya to maximise yields and quality.
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試驗進行了十年的五個茶產區在肯尼亞，以評估產量和質量的答复克隆步步高35茶所在地生產和收穫的間隔。有差異（ P ≦ 0.05 ） ，收益率在不同的地點，以顯著（ P ≦ 0.05 ）地點之間的互動影響和收穫間隔。產量下降了五分之三的地區，但增加了一個位置，再採摘間隔。收益率在一個地理區域的生產不能用來估計其預期收益率在其他茶產區。紅茶茶黃素不同顯著（ P ≦ 0.05 ） ，與地理區域的生產，但其他普通茶質量參數不隨位置。因此，有可能作出類似紅茶類似平原茶黃素質量參數，除非所有茶葉種植地區肯尼亞。茶葉品質提高短期採摘輪。途徑之一是最大限度地提高茶葉品質，通過縮短收穫間隔。要建立最優收穫輪在不同的茶葉種植區在肯尼亞，以最大限度地提高產量和質量。參考資料： me+yahoo