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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Crop Science
Journal Basic Information
Journal DOI :
The Korean Society of Crop Science
Editor in Chief :
Volume & Issues
Volume 24, Issue 4 - Dec 1979
Volume 24, Issue 3 - Oct 1979
Volume 24, Issue 2 - Jul 1979
Volume 24, Issue 1 - May 1979
Selecting the target year
Changes in Amylose Content and Alkali Digestibility Value of Rice Grain During Ripening Period
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 1~6
Amylose content and alkali digestibility value of rice grain were tested from 10days after flowering up to maturity. Both amylooe content and alkali digestibility value showed slightly lower at earliest stage, but they reached maximum value by 20 days after flowering, and then they maintained the value until maturity. Both amylose content and alkali digestibility value showed negative correlations to air temperature, though they were not significant statistically except in case of amylose content and maximum temperature, which showed significant correlation in some year.
Studies on Screening Rice Cultivars for Drought Resistance I. Screening at Seedling Stage
Hak-Soo SUH ;
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 7~12
Seven hundred and forty eight rice cultivars were screened for drought tolerance at seedling stage in a special green house. A number of cultivars such as Wonkiljo, Hanyangdo, YR 52-
-67, Satominori, Mamoriaka, Akanomochi 114, Thkebenimochi, IR 937-55-3, IR2735-F_3B-6-2, IR 2871-53-2,
/Dwan, Khoo lliok Mali-4-2-105, Os6, Palawan, IRAT10, TOS 2583 and H-l05 seemed to be tolerant to drought at seedling stage. There was negative correlation between drought resistance score and growth of plant height and water content of culm and leaf after drought treatment, and highly positive correlation between resistance to blast and resistance to drought at seedling stage. There was no relationship between drought resistance and germination speed, plant height before drought treatment.
Studies on the Effect of Liming for the Yield Components of Paddy Rice
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 13~20
The use of liming material raised soil pH. This brought about a decrease in panicle number per hill. but an increase in the number of grains per panicle in pot cultured paddy production. It also improved grain maturity and thousand grain weight. .An effective control of such contradictory effect of liming material would be one way to increase the paddy production in actual field
Studies on the Chilling Injury of Rice Seedlings III. Possibility of Low-Temperature Hardening
Su-Bong Ahn ; Yong-Woong Kwon ;
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 21~25
To evaluate the possibility of hardening of rice seedlings to chilling injury by low temperature conditioning for improvement of nursery temperature management a chilling sensitive new variety Tongil from Indica \times Japonica cross and a chilling tolerant Japonica variety Jinheung were reared by the 3rd leaf-stage in a day
growth chamber, and were subjected to temperature conditioning for hardening against chilling injury for 6 days. Then the seedlings conditioned and unconditioned were chilled in a day and night
chamber for 2, 4, 6, or 8 days long and returned to the day and night
condition for development of chilling injuries. Survival rate after chilling injury development of the variety Tongil showed distinct effect of hardening, i. e. the unhardened-25 % survival, the hardened by a gradual drop of temperature regime
-59% survival and the hardened. by repeated brief exposure (4hrs. to 6hrs.) to
shock-89% survival against chilling of
for 4 days long. The variety Jinheung survived even against 8 days chilling at
C, but the discoloration rate of leaves due to chilling showed noticeably the hardening effect as repeated shock was much better than the gradually lowering temperatures.
Varietal Differences of the Yield and Growth Characteristics under the Different Temperature and Photoperiod Conditions in Winter Wheat
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 27~33
Eight winter wheat varieties were tested to study the varietal differences on yield and the other characteristics at four different treatments with two different photoperiod and two different temperature levels. In heading date, Changkwang and Parker exhibited the moot sensitive responses to short day length, but Yecora 70. Suweon 169 and Bezostaya were insensitive in general. Culm length was greatly increased at short day length in Bezootaya while Yukseong 3 expressed same responses under low temperature condition. However, little variation of culm length was observed in Yecora 70 regardless the day length. Blueboy, Changkwang and Yecora 70 exhibited the minimal variations in culm length due to the temperature treatment. High yieldings were produced in Blueboy, Suweon 169 and Parker under short day condition, but Parker, Yecora 70. Yukseong 3 and Study produced high yields due to the influences of low temperature. Yield increase was primarily due to the increased number of spikes per plant and number of spikes per plant and 1, 000 grain weight under the low temperature conditions.
Studies on Seeding Mechanized Culture of Wheat in Paddy Field
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 35~42
Experiments were conducted to find out the labor saving efficiency and optimum seeding rate and fertilizer level when newly invented Barley Rotor Caster was used in wheat sowing on paddy field. It decreased the labor for sowing by 66~77% compared with conventional sowing method. And the optimum. seeding rate was considered to be approximately 20
Q per 10a in standard fertilizer level and optimum fertilizer level to be 18-12-12kg/10a,
Effect of Seeding Time and Planting Density on the its Component of Soybean Intercropped with Barley or Aftercropped
Young-Hun Cha ; Joo-Yeol Lee ;
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 43~50
The effect of planting time and density of soybean on the yield component and yield when intercropped within barley rows or seeded after harvest was evaluated. Early maturing barley variety 'Olbori' was seeded at 2 levels of planting density 40
18 and 60
18 (row-hill space in em), and the soybean, variety "Dongbuktae", was seeded on June 1 as a inter-crop, June 15 and 30 as a afterharvest crop, all 2 levels of row space (40, 60 cm) and 3 levels of hill space (10, 15, 20 em). Soybean yield was increased in the following conditions: early seeding of soybeans within rows at 60
20 em density and soybean seeding after barley harvest at 40
20 em density./TEX> 20 em density.
Studies on the Screening for Shade Tolerance in Soybean
Shin-Han Kwon ;
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 51~57
In order to screen the shade tolerance soybean lines, several important agronomic characters were studied after shade treatment at various growth stages. A severe influence of light reduction on agronomic characters found during the late flowering to pod filling period, and the response to shading was significantly different among the lines tested. Examining of pods number per plant after shade treatment during pod filling stage would be most effective method in the screening for shade tolerance soybean lines.
Effect of Planting Date on the Infection of Necrotic Soybean SMV
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 59~65
Severe outbreak of necrotic. soybean mosaic virus. (SMV -N) strain has been observed on soybean (Glycine max) in the central northern pans of Korea. Thirty soybean cultivars developed from Korea. Japan, and USA were tested for the estimation of infection percentages and ratings at 4 different planting dates. SMV-N infection was decreased by delaying the planting dates, but no differences were observed in conmon mosaic virus. Most of the soybean cultivars developed in Korea, and Japan were more susceptible to SMV- N than the US developed cultivars. Infection ratings of SMV-N showed highly significant negative correlations with common SMV regardless of planting dates.
Studies on the Vinyl-mulching Culture of Peanut
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 67~74
Peanut was cultured with varying planting density and sowing date with and without vinyl-film mulching. Vinyl-film mulching raised soil temperature 4.6
higher than the non-mulched during April and early May, but later-on the soil temperature was similar between the two treatments. The ripening and slender grain ratio increased with closer spacing and earlier sowing. Compared with ordinary cultural practices of May 10th sowing without mulching the peanut yield increased by 9% by mulching sown May 10th, and by 49% by mulching and early sowing April 20th.
Studies on the Tissue Culture of Korean-Ginseng (I) -Effect of temperature on the growth of ginseng plant and ginseng callus-
Jae-Seong Joo ;
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 75~79
These studies were designed to define the effects of temperature on the vegetative growth of the korean ginseng, the induction and growth of the ginseng callus and organ differentiation from the callus of ginseng. At the temperature over
. the plant growth of ginseng was significantly decreased and the chlorophyll in the .central parts of leaflets was deteriorated. Induction and growth of the ginseng callus was best at
. High temperature of
promoted the initiation of roots from callus tissue but the shoot was not initiated at the temperature over
. Shoots initiation from the ginseng callus occurred at
or lower temperature.
Variation of Agronomic Characters in the Yearling of Ginseng Plants
Kwang-Tae Choi ;
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 81~84
Present studies were carried out to clarify the variation of agronomic characters of Panax ginseng (violet-stem variant and yellow-berry variant) and Panax quinquefolium (American ginseng). The variations of stem diameter. stem length, leaf width, root diameter. and root length of Panax quinquefolium were found to be more variable as compared with those of Panax ginseng. As for the variations of agronomic characters of Panax ginseng. violet-stem variant was more variable than yellow-berry variant. In Panax ginseng as well as Panax quinquefolium . the variability of stem length. leaf length, and root length was high. while the other agronomic characters showed comparatively low variability.
A Study on Sugar Beet Cultivation in Daegwanryeong Area
Byong-Ho Chang ;
Korean Journal of Crop Science, volume 24, issue 3, 1979, Pages 85~102
In spite of the expansion of population as well as the improvement of living standard, the sugar consumption in Korea depends totally upon the imported sugar with no domestic production. In order to solve this current problem, the author carried out series of experiments and investigations in Daegwanryeong area best suitable for sugar beet cultivation to determine the good varieties, cultivation method, distribution of cultivation area. Thus, it is expected that the result of investigation make a small contribution to the enterprise or production.