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Volume 1953, Issue 1
Displaying 1-13 of 13 articles from this issue
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Yajiro SAKATO1953 Volume 1953 Issue 1 Pages 1-4
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSDownload PDF (220K) -
The Induction of Tetraploidy by ColchicineTakasi SIMURA, Toyotoshi INABA1953 Volume 1953 Issue 1 Pages 5-7
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
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Takasi SIMURA, Aogu NAKAYAMA1953 Volume 1953 Issue 1 Pages 7-11
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESS1. The bloom time and flowering progress of every branch of 3 varieties, that were U-12, A-5 and C-5, were observed during 5 months from August to December.
2. The flower buds were observed in the following different positions for three growthtypes of branches; (a) On the branches which grew no more after June, the flower buds grew in the terminal and axillary buds. (Fig. 1, I )
(b) On the branches which had twice growth time, they grew in the terminal and axillary buds at the upper and lower portions of one branch. (Fig. 1, II)
(c) On the vigorous branches which grew continuously during one growing season, they grew in the axillary buds. (Fig. 1, III)
3. The bloom time of 1-4 flower buds which had grown in each bud was researched, and the following fact was assumed; the flower at the base portion of the buds bloomed first, and then gradually upwards. The period from the first flower blooming (Fig. 2, A) to the second (Fig. 2, B) was about 30 days for U-12, but it was 10-15 days for A-5 and C-5.
4. The terminal flower buds had earlier bloom time comparing the axillary buds on every branch. In each variety, an earlier flowering tendency was observed for (a)-type branch mentioned in the item 2, and the flowering of (b)-type continued till late.
5. Generally speaking, the flower buds on each branch of the varieties which had short flowering period bloomed almost at a time, but those of the variety of long flowering period bloomed by rounds through the time.View full abstractDownload PDF (300K) -
Toyotoshi INABA1953 Volume 1953 Issue 1 Pages 11-14
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSMaleic hydrazide (MH) controled tea flushing effectively. The inhibitory effect was proportional to the concentration of the chemical. A consideration was made on the use of MH for avoiding frost-injury.View full abstractDownload PDF (281K) -
Minoru MITSUI1953 Volume 1953 Issue 1 Pages 14-16
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESS1. Digitaria ichaemum MUHL seedling was treated with 0.02 and 0.002% solutions of 2, 4-D, in such manners as follows.
a) Pre-emergence treatment : seeds were put in the Petri's dishes containing 2, 4-D solution, till the coleoptiles emerged.
b) Post-emeigence treatment: seedlings were put in the dishes with the chemicals, after the coleoptiles emerged.
c) All-stage treatment : Seeds were put in the dishes with the chemicals through the entire germinating process.
d) No treatment : seeds were put in the Petri's dishes without 2, 4-D solution, till the primary leaf emerged.
2. In the plots treated with 2, 4-D, many abnormal seedlings appeared. Their coleoptiles and seminal roots dilated abnormally.
3, In the plots treated with 0.02% 2, 4-D solution, mary seeds died after abnormal coleoptiles had emerged. The difference between the pre-emergence treatment with 2, 4-D and the post-emergence one was not seen.
4. In the plots treated with 0.002% 2, 4-D solution, the growth of abnormal coleoptiles and seminal roots was damaged. The pre-em-ergence treatment with 2, 4-D was more effectve than the post-emergence one.View full abstractDownload PDF (181K) -
Hidekazu FUKUMURA, Sadayoshi KAJIKI1953 Volume 1953 Issue 1 Pages 17-24
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESS1. This study has been carried out to know the effect of the weed killers on the field grasses under. various conditions.
2. Single application of the 2, 4-D was little effective, for grown-up weeds but when it was mixed with the other killers, it grew more effective, among the mixed killers, phenyl mercuric acetate and phenyl mercuric chloride were effective.
3. Chlorate soda, KCIO3, (NaClO3), NH4SCN and Degras liquid were shown remarkably effective.View full abstractDownload PDF (339K) -
Hideya AONO, Tsuneji TAKAHASHI1953 Volume 1953 Issue 1 Pages 25-30
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSWe studied the absorbing ability of the man ure components of the tea leaf, using urea mainly, from 1951 to 1952. The summerized results are as follows. The effect of foliage spray with urea on the growth of the tea plant was not seen, although the spraying of 0.5% solution was repeated seven times.
We recognized that the suitable period of the foliage spray was 2 or 3 days before pluc-king, after tracing the daily variations of growth and the total nitrogen content of the tea leaves. Total-N, soluble-N, caffeine-N, residual soluble-N were increased by the foliage spray with urea of 0.5% solution. Chlorophyll and caro-tenoid showed the same tendency.
The foliage spray of 4 mixtures, containing N, P, K, and Mn, was carried out, but its effect was not distinct. The sbsorbing ability of the leaf surface was greater on its upper side than on the back side. Any injured leaf was not seen by the foliage spray, unless using more than 0.5% solution of urea and other manures used in this exp-eriment. It was harmless to use urea mixed with the common insecticides and fungicides on the tea cultivation.View full abstractDownload PDF (471K) -
Toshimi NAGATA, Makoto YAMAUCHI, Hideo KIBUSHI1953 Volume 1953 Issue 1 Pages 31-37
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSWe examined some new fungicides for preventing tea diseases and obtained the following-re-sults.
1. For the white spot disease, Dithane 1 500, 1 800 and ierlato 1 500 solutions were as effective as Bordeaux mixture. The effect of these fungicide dusts seemed to be inferior to that of the wettable powders of the same hind. Any fungicidal damage was not recognized on even younger buds. The spraying of Zerlate and Forinate gave the made tea an unpleasant smell, but others did not. Dithane spraying increased tea yield.
2. For the Anthracnose, Dithane 1/400 solution, SANKIU Bordeaux, and Bordeaux mixture (0.4%) showed exceedingly and similarly powerful with one another, following these fungicides, the 1. 400 solutions of Zerlate and Fermate were shown effective. The effect of these fungicide dusts was inferior and their effective term was shorter than those of the wettable powders. Frequently, Zorlato and Fermate gave the made tea the fungicidal smell.
3. For the Anthracnose, Phygone 1 300 and 1/600 solutions showed as powerful as Dithane 1 500 solution or Bordeaux mixture (0.4%).
4. For the bacterial disease, Bordeaux mixture, SANKVO Bordeaux, and Dithane were recognized. their effect, but Zerlate was not.View full abstractDownload PDF (415K) -
Jinhakn MINAMIKAWA1953 Volume 1953 Issue 1 Pages 37-40
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSNotes are given on four species of black caterpillars of the tea plant in Japan, i. e. Pyralid, Tamraca torrirlalis LEDERER, Herculia pelasgalis WALKER, and an unidentified species, which attack the twig. bark of the tea plant, and the NCetuid, Nodarw niphonna BUTLER, whose larvae live among the fallen foliages and feed on them.
Tamraea torritlalis is a serious pest of the 2-3 year-old tea garden after pruning, at Kamiasala mura, Shizuoka-prefecture which emerges one generation a year in Japan, the larvae pass winter, hatch on June and July usually, the moths emerge on July and August, the eggs are laid on the back of the leaf. The larvae spin webs on the branches and bite the twigs, making them dead. The full grown larvae make cylindrical cocoons with fragments of leaves and twigs fastened by silky thread and suspended on webs.
Herculia pelasgalis has similar habit to the former species and is not seen so abunduntly.
The unidentified species of the Pyralid, recorded by Dr. C. SASAKI (1899) at Shiga-preferture has not yet been caught by the writer. (9, Feb, 1953)View full abstractDownload PDF (3897K) -
Jinhaku MINAMIKAWA1953 Volume 1953 Issue 1 Pages 40-44
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSIn the present paper, the results of further study of the life-history of Chlorita onulcii MATSUDA, investigated during 1951-1952 are reported.
1. The average egg stage was 7.1 days on May to September.
2. The average adult stage was 42 clays and the maximum was 82 days on July to October.
3. The average number of egg laid by one female was 24 1 and the maximum was 95.View full abstractDownload PDF (267K) -
Yoshio KUWABARA1953 Volume 1953 Issue 1 Pages 44-46
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSTea polisbing effect could be estimated by measuring the turbidity of the tea washing with cold water, using an electric photometer. By this method, some experimental results were reported.View full abstractDownload PDF (191K) -
Yukitaka SUZUKI1953 Volume 1953 Issue 1 Pages 46-49
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESS1. The author investigated the refractivity of the press juice of tea leaf at different leaf positions, developing stages, and plucking seasons, using an Abbe's refractometer.
2. The water of the tea shoot tissue was contained with decreasing order in the stem, the upper leaf and the lower leaf.
3. The refractivity of the press juice of the lower leaf was higher than that of the upper one, and that of the stem was the lowest. But in the case of the tissue powder infusion, the order of the upper and lower leaves was reverse.View full abstractDownload PDF (261K) -
Isamn KUREBAYASHI, Atsushi KUBOTA, Fujio NAKANO1953 Volume 1953 Issue 1 Pages 50-66
Published: April 25, 1953
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSExperiments were made on heat balance of hot air-furnace at various operating conditions.
Lower calorific value of coal and its feed rate, heating air rate, compositions of exhaust gas and cinder, temperatures of heating air, exhaust gas and furnace wall were measured. Moreover we calculated the effective heat, cinder loss, stack loss and wall loss at steady state operation
1. Effects of heating air rate and feed rate of coal on the efficiency and heat losses were ascertained and expressed in Figs. 9, 10, 12 and 15.
2. As for the air temperature at the exit, we established an empirical formula shown as follows :
t2=(1.6+1.7F)103L-0.68 (F<4.5)
t2=(5.7+0.8F)103L-0.68 (F>4.5)
where F : feed rate of coal kg/hr
L : heating air rate kg/hr
3. Heat balance of the furnace operating at the air rate and temperature of the most widely using, primary roller and re-dryer is shown in the following table.View full abstractDownload PDF (918K)
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