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Volume 1971, Issue 34
Displaying 1-10 of 10 articles from this issue
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The Growth and the Ability to Survive over the Winter of Four to Six Years Old PlantShun AMMA, Shigeru MATSUSHITA, Tadayuki TOYAO, Saneyuki KAYUMI1971 Volume 1971 Issue 34 Pages 1-10
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSThe test of local adaptability of tea varieties for black tea has been carried out at the nine experimental spots in Kagoshima, Miyazaki and Nagasaki prefecture using fifteen varieties. The field experiment has been continued from March 1963 and the tested plants were Assam variety and its hybrids.
In this paper some of our findings, in the growth and the ability to survive over the winter of four to six years old plant are described.
The field experiments proved that the following varieties performed good growth in each spot.
Oshima Island………AAN 552, AA 750, Hatsuntonti j i, Ai 2
Makurazaki…………AAN 552, AA 750, Hatsumonti j i, G1Ak 398
Takaono………………AAN 552, Satsuntabeni
Ariake………………Akane, Benihomare, Hatsumomiji, Satsumabeni
Chiran………………Benihonnare, Tadanishiki
Matsumoto…………Hatsutnomiji, Akane, Indo, Benihontare
Higashisonoki………Akane, Benihomare, Hatsumomiji, G1Ak 343
Kurino………………Tadanishiki, Indo
Mimata………………CA 288, Hatsumomiji, Satsuntabeni
On the basis of these results, it seems reasonable to assume that Assam variety and its hybrid (AAN) are generally adapted to the warm islands in Kyushu region, AAN Assam hybrid can survive over the winter and perform good growth in the warm coastal regions such as Makurazaki and Takaono, and in the other cool regions, winter hardiness of AN Assam hybrid or hardier variety is required for its normal and good growth.
Furthermore, the bark splitting near the ground caused by frost which had been found in some plateaus of southern Kyushu at early winter period seemed to be a serious damage on the growth and survival over the winter of young plant.
As a rule, the growth in warm region was clearly better than that in cold region.
In the cold region, non-hardy varieties gradually increased the rate of survival over the winter year by year after planting.
It is also necessary to pay careful attention to the microclimate for deciding the local adaptability of the tea variety.View full abstractDownload PDF (637K) -
Kenjirô IKEGAYA, Shigeo HIRAMINE1971 Volume 1971 Issue 34 Pages 10-19
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSThe relation between absorption of applied phosphorus by tea plant and available phosphorus content (Truog's method) of tea soil was investigated by pot, field and laboratory experiments with radio active phosphorus (32P).
When the available phosphorus content ex-ceeded 30-40mg. (P2O5)/100g. in red yellowish soil and 20mg./100g. in "kuroboku" soil and 10 mg./100 g. in volcanic ash soil, the ratio of applied phosphorus content to total phosphorus content of the tea leaves and young stalks decreased less than 5 %.
So, it will be suggested that these content level of available phosphorus relates closely to the fertility of these soils.
When the radioactive phosphorus was applied to the low available phosphorus plot, more amount of applied phosphorus was absorbed in inorganic-P and phosphatid-P fractions in new and mature tea leaves, but the phosphatid-P content of those parts of tea plant was lower than that of the high available phosphorus plot.View full abstractDownload PDF (671K) -
Water Movement in Low Productive Tea Field at the Diluvial PlateauSigeo HIRAMINE, Kenjirô IKEGAYA1971 Volume 1971 Issue 34 Pages 20-30
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSThe water movement in low productive tea field at Makinohara diluvial plateau was examined by moisture tension meter (set up in tea field) and laboratory experiment.
The results were summarized as follows :
1. Impermeable layer (concretion of clay, sand and stone) existed at 90 cm. under soil surface in low productive tea field and at 150 cm. in high productive tea field.
2. The coefficient of permeability and gaseous phase capacity at pF 0-1.5 of moisture tention in low productive tea field were lower than those in high productive one.
3. After rainfall, damp condition of soil under 70 cm. in low productive tea field continued over one week, but the excess moisture in high productive one was drained in a short time.View full abstractDownload PDF (516K) -
Storage of Tea leaves in Tall ContainerTadakazu TAKEO, Yoshitake KATÔ, Ryoyasu SAIJÔ1971 Volume 1971 Issue 34 Pages 31-36
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSIn order to develop the more compact storage equipment of plucked tea leaves, we examined a tall container equipment. In this examination, plucked tea leaves were preserved in tall container during a day by continuous aeration method. The limit of the piled tea leaves in the container was about 360 kg./m2. The position in which tea leaves were most compactly packed, situated at one-third part from bottom of the pile. When the atmospheric temperature was above 30°C, reddening of tea leaves was recognized during the storage and it occurred in the most compactly packed position at first. Reddening of tea leaves occurred not because there was no aeration in this position, but because the warmer air that was used for aeration, did not have enough faculty to disperse the respiratory heat of tea leaves. So the cooling equipment of the air was necessary, if the atmospheric temperature was above 30°C. When cooling equipment, in which the air was passed through the cooled water shower was used, the piled tea leaves was protected from withering during the storage.View full abstractDownload PDF (308K) -
Shûichi FUKATSU, Toshio HARA1971 Volume 1971 Issue 34 Pages 37-40
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSThe methods of measuring the bulk density of green tea were investigated to elucidate the relation between volume and weight of packed green tea.
The results are summarized as follows ;
1) It was shown that the bulk densities of green tea measurd by a cylinder having the diameter of 35 m.m. were smaller than the values by a cylinder of the diameter of 52 m.m.
2) The filling method of green tea into the cylinder had the most significant effect on the measurement of the bulk density. The variation of the bulk density in the replicate measurement was greater in the case of loose filling than compact filling.
3) The bulk densities of green tea sold in market showed the values from 0.3 to 0.4g./m.l. in compact filling and those values decreased about 10 to 20% in loose filling.View full abstractDownload PDF (244K) -
Statistical AnalysisMuneyuki NAKAGAWA, Norio ISHIMA1971 Volume 1971 Issue 34 Pages 41-44
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSIn the previous paper, Sencha (ordinary green tea) of high, medium and low grade, and Gyokuro (finest green tea) were subjected to chemical analysis as organoleptic test.
The statistical analyses were applied for the results in this paper.
A model of multiple regression for palatability evaluation was constructed from the four factors, i. e. content of catechins, amino acids, caffeine and other soluble matters. The multiple correlation coefficient between palatability evaluation and above four factors was most significant (r=0.965) and therefore, the contribution of four factors to palatability evaluation was 93%.
From the values of the standard coefficient of four factors, it was assumed that palatability of green tea liquor used in this experiment was most affected by content of catechins among four factors. However, the partial correlation coefficients of four factors were all low. Therefore, it seemed that palatability was more affected by cooperation of four factors, rather than a single factor such as content of catechin alone.View full abstractDownload PDF (271K) -
A Simple Determination of Total Amino AcidsIsao ÔTA1971 Volume 1971 Issue 34 Pages 45-49
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSA simple determination of total amino acids in tea leaves was investigated by ninhydrin method.
The method was as follows : Sample solution prepared from 1g. of dried tea leaves by extraction with hot water is treated with the routine method of basic lead acetate. This solution is made to 100 ml. with water, after removed Pb with H2S. Take 0.25 ml. of sample solution, add 0.12ml. of pH 8 phosphate buffer solution and 0.1 ml. of ninhydrin solution to a test tube. Heat the mixed solution in a boiling water bath continuously 10 minutes. Make to 10 ml. with water, cool, and measure the absorbancy of the coloured solution at 570mμ with a spectrophotometer. Amount of total amino acids was calculated from the measured absorbancy by the calibration curve of theanine.
The coefficents of variation of this method were 4.70-4.90%. A high correlation (r=0.980) was observed between the total amino acids content of this method and the sum of each amino acid content by an automatic amino acids analyzer.View full abstractDownload PDF (288K) -
Application of Scoring Method by Category Scale1971 Volume 1971 Issue 34 Pages 50-53
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESS -
[in Japanese]1971 Volume 1971 Issue 34 Pages 54-62
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSDownload PDF (7518K) -
[in Japanese]1971 Volume 1971 Issue 34 Pages 63-74
Published: January 20, 1971
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSDownload PDF (11255K)
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