抄録
In my 1st report, I asserted that the lowest temperature for the growth of Assam black tea plant which is easily affected by cold weather was -6.0°C. and in my 2nd report, I asserted that it was -8.0°C. But, by taking the temperature in Chiran Town where the parts on the ground of the above-mentioned plant were said to die every year, I found that the lowest temperature on the grass, there between Jan. 1 to Mar. 31, 1954, was -6.4°C. Now my conclusion is as follows:—
(1) In Mankurazaki City the plant can grow at above -8.0°C.
(2) In Chiran Town its parts on the ground die even a -6.4°C.
(3) Too many days being at the temperature below zero is bad for its growth (In those 6 years, the yearly mean number of the days in Makurazaki City was 5, while in Chiran Town 19.) In other words the total time at the lower temperature (below zero) and the frequent visits of the low temperature have a great influence on its growth
