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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 :
Lee, Sang Chul
Volume & Issues
Volume 35, Issue 6 - Dec 1990
Volume 35, Issue 5 - Oct 1990
Volume 35, Issue 4 - Aug 1990
Volume 35, Issue 3 - Jun 1990
Volume 35, Issue 2 - Apr 1990
Volume 35, Issue 1 - Feb 1990
Selecting the target year
A Survey on Cold-induced Sterility of Rice at High Land of Kangweon Province in 1988
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 481~486
A survey was carried out on the cold-induced sterility of paddy rice in 1988 in the alpine area of Kangweon province when cold spell occurred during late July to early August, During this period minimum temperature as low as 8.5
was recorded at Dunnae and Jinbu, respectively. The rice cultivars, which encountered this cold spe]J at meiotic stage of microspore, were damaged by sterility in most alpine areas of higher than 300m in altitude. To secure spilkelet fertility higher than 80% it was estimated that the minimum and average air temperature accumulated during 13 days of meiotic stage should be higher than 2
, respectively and/or the duration of lower than 17
in minimum temperature should not exceed fivedays during that period.
Cultural Practices for Improving Grain Quality of Rice in Southern Plain Area
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 487~491
This experiment was conducted to investigate the cultural practices for improvement of rice grain quality under different cultivation times and fertilizer levels at panicle initiation, heading and different drainage times after heading. The obtained results could be summarized as follows. In consideration of brown rice whole kernel form, and analyzed physico-chemical properties cultivation time required the optimum season before June 5. Feltilizer level at panicle initiation and heading needed 3kg/10a or less. Drainage time desired late drainage at 30-40 days after heading.
Raising of Rice Infant Seedling Using of Shelve
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 492~496
To utilize narrow space of vinyl house for rice seedling raising in three dimensions and raise infant seedling in large quantilies at once, shelves were constructed with few stories in inside of vinyl house and seedlings were raised by use of the shelve. Seedling characters, rice growth status on paddy field and rice grain yield were tested and the following results were obtained. Rice seedling raising was practicable to 10 days after sowing in the interval of 20cm height and 12 days, 30cm height on the shelve for seedling raising. Seedling characters, rice growth status on paddy field and rice grain yield were not varied according to the seedling raising height of the shelve. Seedling characters were not different according to irrigation intervals in raising box of rice seedling.
Influences of Nitrogen and Potassium Rates on Yield and Quality of Cured Leaf in Burley Tobacco
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 497~503
A field experiment was conducted to find out the effects of nitrogen and potassium rates on the growing characters, yield and quality of burley tobacco (1988 : Burley 21, 1989: Burley 21 and KB101) during successive two years. The effect of added nitrogen fertilizer on the growth characters at topping stage was different according to growing years. Potassium rate had no effect on the growth characters. The effects of nitrogen and potassium rates on the nitrogen conteut of leaf during growth stage were great, while the effects on the potassium content were not large, relatively. As compared with Burley 21, KB101 showed high yield, and the productivity in nitrogen-reduced condition was high. The yield and quality were increased when nitrogen applied to 22.75kg/l0a, but the yield was not increased and the quality was decreased when nitrogen applied above 22.75kg/l0a. Neither potassium rate nor potassium/nitrogen application ratio had effects on the yield and quality, while the quality was somewhat decreased when potassium/nitrogen ratio was small. When the nitrogen fertilizer being applied above 22.75kg/l0a, there were no advantageous effects on the yield and quality, It is sufficient that the potassium application is about 35.0kg/l0a, and the scheme of reducing of potassium rate may be considerable.
Agricultural Climatology of Cheju Island II. Potential Evapotranspiration Based on Near-Real Time Data Measured by Automated Weather Stations
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 504~511
Weather data acquisition and potential evapotranspiration (PET) calculation procedure were investigated to support the agricultural development efforts in the mid-altitude mountainous region of Cheju Island. Automated weather stations (AWS) were installed at two points representing the east and the west of the study area. A personal computer was employed to collect the near-real time weather data from AWS through the public telephone line. Hourly data were available for solar radiation, air and soil temperature, relative humidity, wind speed and direction, and precipitation. Based on the data for the month of June 1989, daily climatic features were comparatively analyzed for the two areas and the Penman equation was used to calculate PET. Air temperature was higher by 1 to 2 degree C in the east due mainly to the higher solar radiation and partly to the Fohn effect caused by the daytime southwesterly blowing over Mt. Halla. Diurnal march of soil temperature lagged by 4 hours behind that of air temperature and the diurnal range for 10cm subsurface soil was 3 degree C. Wind was consistently stronger and a marked sea-land breeze circulation was detected in the west. Calculated PET values were higher in the east by 6% than in the west. Overall values from the east and the west of the mid-altitude mountainous region were higher by 30% than those of the coastal region, which were estimated from the Class A Pan evaporation measured by the Korea Meteorological Service Offices.
Tillering Behavior of Low and High Tillering Rices
Je Kyu, Kim ; B. S. Vergara ;
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 512~517
This experiment was conducted to evaluate the tillering behavior of low- and high-tillering rice plants, IR58. a high-tillering cultivar with small panicles showed not only higher tiller number but also earlier tillering, faster tillering rate and longer tillering duration than IR25588. a low-tillering cultivar with large panicles, Tillering ability of IR25588 was only 59% that of IR58, Percent effective tillers was higher in IR25588(85%) than in IR58 (67%), Tillering response to wider spacing was higher in a high-tillering cultivar than in a low-tillering cultivar, Grain yield response to closer spacing (close spacing adaptability) was higher in a low-tillering cultivar than in a high-tillering cultivar.
Estimation of Actual Evapotranspiration over Paddy Rice Field
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 518~524
Actual evapotranspiration was measured over rice paddy field by Bowen ratio heat balance method and based on this, investigated was the reliability of actual evapotranpiration estimation from Class-A Pan and small pan evaporation and reference evapotranspiration calculated by modified Penman-Monteith model. Crop coefficients based on Class-A Pan and small pan evaporation and reference evapotranspiration by modified Penman-Monteith model were averaged to be 1.57. 1.10 and 1.49 over the whole rice growing season, respectively. Their respective coefficients of variation were 28.7. 22.7 and 12.8 percent, respectively. Crop coefficient based on modified Penman-Monteith model varied in good agreement with the trend of leaf area development, being greatest around heading stage.
Effects of Nitrogen and Potassium on Plant Growth, Yield and Nodule Formation in Winged Bean(Psophocarpus tetragonolobus(L.) D. C.)
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 525~531
This study was conducted to find out the effects of nitrogen, potassium application on the plant growth, grain yield and nodule formation of Winged bean. Plant height, number of branches, number of leaves, leaf area, NAR, RGR and CGR increased with basal and top dressing of nitrogen and potassium application. Especially CGR was increased significantly with the added amount of potassium. Number of nodules and nodule dry weight decreased with application of basal and top dressing nitrogen, but increased with the added amount of potassium. Green pod, tuber and grain yield increased with application of basal and top dressing nitrogen, and the added amount of potassium. There appeared positive correlation coefficient between grain yield and growth charateristics, and between grain yield and components. But there showed negative correlation coefficient among yield, number of nodules, dry weight and P
5/ contents in leaf.
Effect of Combination Method on the Four Inbred Lines of Double Cross Hybridization for Crop Population Improvement
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 532~538
This experiment was carried out to establish the efficiency of crop breeding on comparison of combination methods of single, 3-way, and double crosses and combination order of 4 winter wheat which were different in origin, source, and plant types, On comparison of 4 crossing modes, there appeared the earliest heading and the highest grain yield in double cross, and decreased in 3-way. single crosses. and parents in order, There showed the significant mean squares of GCA and SCA in 4
4 diallel analysis for grain yield and yield components. Grumil and Bezostaya 1 exhibited highest GCA effect of grain yield which appeared the actual highest grain yield. There appeared the highest SCA-effect in F
(Eunpamil/Bezostaya 1) showing 4.22. Of the 3 double crosses there exhibited the highest grain yield in F
(Grumil/Eunpamil/ /Lanota/Bezostaya 1). Two single crosses for this double cross ---F
(Grumil/Eunpamil) and F
(Lancota/Bezostaya 1) --- do not revealed directly for this yield, but combined each other by chromosome switch as combination of F
(Grumil/Bezostaya 1), F
(Eunpamil/Lancota) and F
(Eunpamil/Bezostaya 1) which appeared the higher grain yields and SCA-effects. Of the six 3-way crosses. F
(Lancota/Bezostaya 1/ /Eunpamil) expressed the highest grain yield. Its combinations were F
(Lancota/Eunpamil) and F
(Bezostaya 1/Eunpamil) combined by chromosome switch, which its grain yield and SCA-effect were higher.
Effects of Leaf Harvest Number and Time on Agronomic Characters and Grain Yield in Perilla
Jung-Il Lee ;
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 539~542
This experiment was conducted to obtain some informations on the effects of number of leaf harvest and time to agronomic characters and grain yield in perilla. For the experiments perilla seedlings of 40days old were transplanted on June 20, July 20 and August 20 in 1988, and leaf harvested at 30. 40. 50 and 60 days after transplanting, respectively. The following results were obtained from the experiments. In the case of the fully developed leaves were harvested, culm length were decreased by more harvests and by the later harvests. However culm diameter, number of nodes and branches were little influenced by the leaf harvests. Number of clusters, weight of 1,000 grain and grain yield were significantly influenced by the number of leaf harvest and time. As the above results, considering the grain yield, leaf harvest would be available in the case of once or twice at the early growing stage.
Diurnal Variation of
Concentration and Air Temperature inb Polyethylene Film Covered Rice Seedbed Subjected to Various Ventilation Methods
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 543~547
Diurnal courses of
concentration and air temperature in the rice seedbed tunnel covered with polyethylene film, subjected to three different ventilation methods, were traced. Regaredless of ventilation methods,
concentrations in the tunnel on a clear day were lower than that in ambient air, and vice versa before dawn.
concentration during the day was lowest in the tunnel with non-ventilation (NV), followed by horizontal slit ventilation (HSV) and traditional one(TN), reaching down to the lowest level of 58ppm, 155ppm and 272ppm, respectively. Air temperature in the tunnel reached 46
in NV, 37
in HSV and 32
in TV at the daytime when ambient air temperature was 22
. Even at night time of ambient air temperature below 15
, HSV was more effective than TV in raising the air temperature in the tunnel. The dry weight of 40-day old seedling weighed heaviest in HSV, followed by TV and NV.
Physiological and Genetical Characters for Early Maturity in Barley and Common Wheat
Yasuda, Shozo ;
KOREAN JOURNAL OF CROP SCIENCE, volume 35, issue 6, 1990, Pages 548~558
Physiology and genetics of early maturity in cereals are the subject of practical as well as scientific interest for agronomist and plant breeders, Thorough understanding of the true nature of such a complex character requires physiological and genetical knowledge about the internal factors, which are closely bound up with and react to some particular external or environmental factors. From the practical point of view. experiments should be conducted under controlled conditions. especially the day length and temperature, so that the genotypic differences pertaining to these factors may be discerned. Takahashi and Yasuda (1958, 1970) maintained that at least three physiological factors were responsible for determining earliness in barley. namely. (1) spring and winter habit of growth or vernalization requirement, (2) ogitioeruiduc response or sensitivity to short-day, and (3) earliness factor in a narrow sense or minimal vegetative growth. The same situations were true in common wheat also (Yasuda and Shimoyama, 1965), In this report. physiology and genetics of internal factors and their relations to the time of heading in the field will be presented with some problems concerning differences in mechanism of early maturity between barley and wheat.