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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Sericultural and Entomological Science
Journal Basic Information
Journal DOI :
Korean Society of Sericultural Science
Editor in Chief :
Volume & Issues
Volume 19, Issue 1 - Dec 1977
Selecting the target year
Relation Between the Yield and the Cutting Length of Mulberry Branch in Autumn
Journal of Sericultural and Entomological Science, volume 19, issue 1, 1977, Pages 1~4
This work was carried out to know the relation between the yield and the cutting length of mulberry branches in autumn. The results obtained are summarized as fellows, 1. Most of the experimented mulberry trees grew evenly, of which branches showed 171cm to 177cm in average length. 2. No difference could be seen in autumn yield among the treatments, however, the shorter branches were remained, the higher in ratio of re-sprouting bud. 3. The spring yield of cutting mode in 100cm and 200cm remained was as much as non-treatment, but dropped remarkably in below 80cm remained. The high productivity in the 100cm or above renamed mode accounts for the low ratio of no-sprouting bud and accelerating the growth of the shoot, which consequently become much of shoot yield per 1m of branch. By cutting branches, however, the ratio of amount of leaves per shoot became low. 4. The cutting mode in 100cm and 120cm remained can yield as much as non-treatment even in the total yields of spring and autumn. but 100cm mode seems to be more advanceable in autumn owing to a little sparing labor for picking leaves. Thus, the most desirable cutting mode in autumn may be in 100cm remained, which usually has been done at the part of one third or half of the whole branches.
Study on the Extracted Cellulose Powder from Natural Resources for Artificial Diet of Silkworm, Bombyx mori (I)
Journal of Sericultural and Entomological Science, volume 19, issue 1, 1977, Pages 5~7
On the purpose of exploiting cellulose resourse which is needed for artificial diet of silkworms, mulberry branch, eastern cotton wood branch, pitch pine pulp, poplar pulp, chaff, sawdust and rice straw were examined. Among the matters above mentioned. mulberry branch and pitch pine pulp were found to be replaceable as cellulose component in the artificial diet. By means of some chemical treatments, it is found that one of the extracted cellulose powder from mulberry branches is more useful in the larval growth.
Study on the Extracted Cellulose Powder from Natural Resources for Artificial Diet of Silkworm, Bombyx mori (II)
Journal of Sericultural and Entomological Science, volume 19, issue 1, 1977, Pages 9~13
This experiment was carried out to know relationship between economical characters and kinds of extracted cellulose powders, extracting methods and cellulose composition. The results obtained are summarized as follows; 1. Among the matters for cellulose resources, mulberry branch is the most useful in economical characters such as larval weight, ratio of cocoon shell and mortality, followed by pine branch. 2. Though both PA-method and NaOH-treatment are equally effective in the larval growth, the latter may be more recommendable because of its economical convenience. 3, It may be desirable to add 15 to 22.5 per cent of cellulose powder per dry matter in the diet composition
Effect of Artificial Diet containing Corn Shank on Larval Growth of Silkworm, Bombyx mori
Journal of Sericultural and Entomological Science, volume 19, issue 1, 1977, Pages 15~18
This study carried out to know whether corn shank can be used as the crude fiber source for the larval growth or not, The results obtained from this study are summarized as follows: 1. It seems that there are no bad effects of the artificial diet containing corn shank on feeding of the newly hatched larva. 2. Author did not find any bad effects of the artificial diet containing corn shank on larval growth and cocoon qualifies. 3. In view of these results, it seems that the corn shank is suitable for use as the crude fiber source for the silkworm artificial diet.
Studies on the Applicability of Sodium Hypochloride Solution to Silkworm Rearing Industry as a Useful Disinfectant (I) Effect of Sodium Hypochloride Solution on the Disinfection of Silkworm Larvae for the Control of Yellow Muscardine Disease
Journal of Sericultural and Entomological Science, volume 19, issue 1, 1977, Pages 19~23
In the previous short communication, the authors reported the applicability of Sodium Hyplochoride solution to silkworm rearing industry as a disinfectant after confirmed the fact that the chemical agent is capable to kill most of the pathogens of silkworm diseases. The authors, in the present study, attempted to investigate the influence of the chemical on the growth of silkworm larvae and the effect on the disinfection of silkworm larvae to inactivate the pathogen of yellow muscardine disease, Isaria farinosa and the results obtained are summarized as fellows. 1. The chemical agent did not affect the growth of silkworm larvae, when it was applied on silk-worm body with the concentration of 1,3,5 per cent of the agent during the rearing period. 2. The Sodium Hypochloride solution did not give any damage to silkworm larvae when larvae were fed up with 1,3,5 per cent of the solution. 3. In the bioassay of the solution on disinfection of larvae inoculated with yellow muscardine disease pathogen, the fact that the agent could control the disease was observed by showing much low infection rate in 3.5 per cent treatment compared to non-treatment control.
Studies on Flacherie and Ina-flacherie Viruses of the Silkworm, Bombyx mori I. Purification of Viruses
Journal of Sericultural and Entomological Science, volume 19, issue 1, 1977, Pages 25~32
The flacherie (FV) and Ina-flacherie (Ina-FV, named arbitarily) viruses of the silkworm, Bombyx mori was isolated from infectious larvae. Two types of infectious particles were purified by sucrose density gradient centrifugation. Some properties of the purified particles were investigated. Electron micrographs showed that FV and Ina-FV were spherical particles with diameters of 27nm and 20nm, respectively. The sedimentation coefficient of Ina-FV was 80S.
Graft Polymerization of vinyl monomers onto silk
Journal of Sericultural and Entomological Science, volume 19, issue 1, 1977, Pages 33~36
Graft polymerization of vinyl monomers onto silk were carried out in aqueous medium using ceric salt as an initiator, and discussed about the mechanical properties of silk. The results obtained are summarized as follows: 1. Percent grafting is greatly enhanced by the increasing of the temperature. 2. Effect of percent grafting is in the order of methyl methacrylate, and vinyl acetate. 3. Strength is decreased in the high grafted silk, and elongation is increased in the low grafted silk.
Physiological and Biological Characteristics of Cuttings of Mulberry Trees in Korea(Abstract)
Chung, Tae-Am ;
Journal of Sericultural and Entomological Science, volume 19, issue 1, 1977, Pages 37~38
Since 1972 a series of experiments were conducted to reveal physiological function and biological activities involved in rooting of mulberry cuttings, and the behaviour of ether extractable growth control substances in leaves and stens. Measurements were made on various mulberry varieties for respiration of cuttings, suitable size for the production of cuttings, change of rootability of cuttings with growth of cutting shoots after cutting date, rooting tests on the green beans with ether leaf extract and ether stem extract, and rooting effect of cutting by NAA treatment. (omitted)
Survey on the Regional Adaptability of Sericulture in Kyunggi-Do
Journal of Sericultural and Entomological Science, volume 19, issue 1, 1977, Pages 39~47