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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 41, Issue 6 - Dec 1996
Volume 41, Issue 5 - Oct 1996
Volume 41, Issue 4 - Aug 1996
Volume 41, Issue 3 - Jun 1996
Volume 41, Issue 2 - Apr 1996
Volume 41, Issue spc1 - Mar 1996
Volume 41, Issue 1 - Feb 1996
Selecting the target year
Effective Tillering Pattern and Grain Yield on Different Fertilizer Application Level in Barley
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 1~12
This study was aimed to provide understanding on the eco-physiological response of barley tillers as affected by fertilizer application level. Yield and yield contribution rate of tillers were investigated with the data of field experiments in the former Wheat and Barley Research Institute of Suwon, Korea from September 1982 to July 1984. The 50％ and 100％ increased rates of fertilizer application were compared to the local recommendation, which is 120 - 90 - 70kg /ha for N-P
O, to examine tiller dynamics under diverse fertilization scheme. With the increased rates, more mainstem leaves appeared and more effective tillers resulted from C3, 4P, 41, 2P1 and 3PP. Higher number and yield of grains per plant were also observed in the increased rates, though the number of grains and grain yield per ear were slightly lower than the recommended rate. The order of yield contribution by various tillers with the recommended rate and 50％ increment was mainstem, 1, 2, 11, 3, 21, 12, 22, 4 and C, but 1 and 11 contributed more than mainstem and 3 with the 100％ increased rate.e.
Determination of Barley Grain Components at Different Maturing Stages by Near Infrared Reflectance Spectroscopic Analysis
Hyung-Soo Suh ;
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 13~19
This study was conducted to establish the rapid determination method for major components of maturing covered barley grains, and to improve the efficiency of selection in barley breeding. Near Infrared Reflectance Spectroscopy (NIRS) is an established, economical and nondestructive technique applied widely to the food and feed industry. 34 barley lines were sampled at 5 day-interval from 25 to 35 days after heading. A standard regression analysis for the data obtained by analytical laboratory methods and NIRS method was carried out to get a useful calibration equation. The simple significant correlation between these two methods at 25 days after heading was recognized in starch and
-glucan contents. At 30 days after heading the data obtained by two methods showed significant correlation in starch,
-glucan and protein contents. Analyzed data and that from NIRS method at 35 days after heading was significantly correlated in starch and protein contents. It was concluded that the applicability of NIRS method for the components analysis in maturing barley grains was different depending on maturing stages and components.
Specificity in Weed Competition and Herbicide Response of Soybean under Foggy Condition
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 20~27
Greenhouse experiment was carried out to investigate the specifics in growth, weed competition, and herbicide response of soybean(Glycine max) under foggy condition. Plant height and leaf stage of soybean under foggy condition were greatly increased through all growing stage comparing with non-foggy condition. At 100 days after seeding, plant height of soybean also was increased by 14％ while number of pods, number of grains per pod were reduced by 16, 24 and 23％, respectively comparing with non-foggy condition. On the other hand, plant height of soybean under foggy condition was reduced with increasing the duration of competition and this tendency was similar to non-foggy condition. Plant height was reduced by above 50-day competition. Number of pods per plant of soybean was reduced regardless of foggy condition. Among the herbicides treated, quizalofop caused slightly crop injury under foggy condition, but the other herbicides did not affect growth of soybean. Number of pods and 100-grain weight of soybean by treatment of herbicides were similar to that of the untreated control but those of soybean under foggy condition were significantly reduced. At 40 days after herbicide application, weeding efficacy (based on shoot fresh weight) of herbicides treated under foggy and non-foggy condition, released exellent data(above than 97％) in all regardless foggy condition.
Effect of Seeding Methods on Growth and Yield of Rice in Direct Seeding on Dry Paddy
;Yong-Dea Yun;Moon-Hee Lee;
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 28~33
This experiment was carried out at National Crop Experiment Station in 1994 to obtain basic information of growth characters and yield of rice under various seeding methods in direct seeding on dry paddy. Hwaseongbyeo sown on April 27 by flat drill seeding, high ridged drill seeding and hill seeding under different seed conditions, soil convering after seeding and irrigation methods. Nitrogen applied 150kg /ha by 3 times split application at rate of 40:30:30％ (basal: 5th leaf stage:panicle initiation stage). Seedling stands were higher in flushed irrigation water after seeding than in irrigation at 3rd leaf stage, and it also was higher in high ridged drill seedings than in flat drill seedings. Days for seedling stand, heading date were shorten 6~10 days, 2~3 days by flushed irrigation water after seeding, respectively. Number of tiller was more in high ridged drill seedings than conventional seedling method(Flat drill seeding ＋ intact seed ＋ soil covering after seeding ＋ irrigation at 3rd leaf stage after seedling stand) at early growth stage, but the most tiller number was highest in developed seeding method(Flat drill seeding ＋ soaked seed ＋ non soil covering after seeding ＋ fulshed irrigation water after seeding) at heading stage among used seeding methods. Lodging index was slightly high in high ridged drill seeding and conventional seeding. Field lodging was degree 1 in high ridged drill seedings and developed seeding, Milled rice yield in developed seeding was increased 7％ compaired with conventional seeding(5.35t /ha).
Change of Agronomic Traits of Tillering Isogenic Lines under Different Seedling Density in Barley
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 34~44
Several major agronomic traits of 4 isogenic lines for tillering(Kindred, Morex)were investigated under the different seeding rates and seedling mortality grown in the pots. The normal-tillering phenotypes had higher grain yield(46％) and leaf area index(56％) than their uniculm isogenic counterparts. The assortment rate(69％) and 1,000 grain weight(27％) in uniculm type were greater than the normal type. Uniculm plants were earlier in heading(4∼8days) and maturing(2∼3 days) dates compared with their counterparts. The grain yield was fitted to linear regression, ranged 0.659g to 0.5g per spike number. On increasing the seedling mortality rates, the grains per spike and 1,000 grain weight were slightly decreased, but the grain yield per plot was decreased markedly because of decrease of spikes per plot. The assortment rate, leaf photosynthetic capacity and reproductive tiller number were increased with increase of seedling mortality. The grain yield was largely dependent on the number of spikes per plot on occurrence of seedling mortality. For the uniculm genotypes to be introduced and bred into a present leading variety, the isogenic lines were precisely tested in the open field for a couple of years.
Inheritance of Days to Heading, Spikelet Number and Fertility under Cold Water Treatment in Rice
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 45~52
This study was conducted to know how cold tolerance of rice is inherited. Several crosses were made between cold tolerant and susceptible varieties, and their progenies were evaluated for days to heading, spikelet number per panicle and spikelet fertility under both cold water and natural conditions. In F
generations, earlier heading, more number of spikelet per panicle and higher spikelet fertility under the cold condition were dominance, and less delay or reduction in heading days and spikelets per panicle by cold treatment were over dominance or partial dominance, while less reduction in spikelet fertility by cold-water irrigation was complete dominance. Heritability in most characters by cold treatment was high and there was less difference of heritabilities in heading days and spikelets per panicle between cold treatment and natural conditions, while there was much difference of heritability in spikelet fertility between two conditions. Heterosis in spikelet fertility was considerably high, while those in heading days and spikelets per panicle were relatively low. Heterosis in remote crosses was especially larger under the cold-water treatment condition compare with that under natural condition.
Effect of Geothermal Water on Germination, Seedling Growth and Development of Vascular Bundle in Rice
Lee, Dong-Jin ; Zamora, Oscar B. ; Chae, Je-Cheon ;
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 53~61
Geothermal water contains toxic quantities of sulfur, potassium, sodium, boron, and other toxic elements. These toxic elements can substantially restrict germination and seedling growth in rice plant. Germination percentage, average days required for germination and germination velocity were drastically affected by geothermal water. Binato cultivar has higher germination rate compared to IR58 and Unbong 7. Plant height, root length, leaf number and total dry weight decreased with increased geothermal water concentration. Binato and IR58 showed higher total dry weight than Unbong 7 at 25 percent geothermal water at 15 days after treatment (DAT). Binato and IR58 were relatively more tolerant than Unbong 7 in terms of percentage of leaf damage at 25, 50 and 75％ concentration of geothermal water at 10 DAT. The development of large and small vascular bundles decreased with increasing concentration of geothermal water from control to 50％ in three rice cultivars.
Effect of Grain Specific Gravity on Seedling Growth and Vascular Bundle Development of Two Rice Cultivars
Chae, Je-Cheon ; Lee, Dong-Jin ;
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 62~67
High density (HD) grains is associated with seedling vigor. Studies were conducted on the relationship of different grain densities and vascular bundle(VB) development and seedling growth. IR58 (indica type) and Unbong 7 (japonica type) were used in this experiment. HD grains had more and bigger VB in the leaf blade and sheath than poor density grain at seedling stage. IR58 had more large VB at the leaf compared with Unbong 7. Higher development of VB in seedling of HD grains can increase transport of assimilate and growth rate. Plant height, leaf number, root growth and dry weight increased with increasing grain density from poor to high. The total area of large VB in the leaf blade and sheath was highly correlated with the dry weight. Higher number and larger area of VB and dry weight can be obtained by using HD grains and these initial advantages can contribute to high yield potential.
Effect of Band Application of Slow Release Fertilizer on Rice Growth and Yield in Puddled-soil Drill Seeding
Dong-Sam Cho ; Soo-Yeon Cho ;
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 68~76
To elucidate the optimum fertilizer level and application method for band application under puddled-soil drill seeding in Jeonbuk series of fluvio-marine alluvial soil at National Honam Agricultural Experiment Station in 1995, using Dongjinbyeo, slow releasing compound fertilizer of 100％ and 80％ to conventional application level was applied totally as basal fertilizer simultaneously with seeding under 3cm and 5cm depth from soil surface in a distance of 4cm from the seeded row. Plant height was taller and tiller number was higher in band application than conventional application but ratio of effective tiller was vice versa. Panicle number was more but ratio of effective tiller ratio was lower in 100％ than 80％ level of band application and they were higher in 3cm than 5cm depth from soil surface. Leaf area index and dry weight was higher in conventional application at early growth stage but was vice versa after maximum tillering stage, and they were higher in 3cm depth at early growth stage but 5cm depth after maximum tillering stage. NH
-N in soil was higher in conventional application at 25 days after seeding but, thereafter was lower than band application and it was higher in 3cm than 5cm depth till 40 days after seeding but was versa, thereafter. Lodging degree was slightly higher in band application, 100％ level and 5cm depth than in their counterparts. Panicle number and grain number per
was lower in conventional application than 80％ or 100％ level of band application without significant difference between band application levels or application methods. Yield was higher at 80％ level of band application under 3cm depth than conventional application, but no significantly different among other application methods. Therefore, 80％ level of band application under 3cm depth of soil surface was more effective for puddled-soil drill seeding on the basis of the reduction of application efforts, better plant growth and higher yield in rice.
Characteristics of Awns and Grains on Different Spikelet Positions in Barley
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 77~85
To obtain basic information for characteristics of naked barley cultivars, awn length and weight, kernel weight along spikelet positions of some cultivars bred in Korea were investigated. Awn length and weight of third to fifth spikelet, and kernel weight of second to fourth spikelet from spike tip were not different from each mean value for total of spike. From the spike base, awn of third to fourth spikelet was longest and heaviest, and kernel weight of fifth to sixth spikelet was heaviest. Value for awn length, awn weight, and kernel weight of lateral row florets was lower 13 to 26％, 26 to 41％, and 18 to 25％, respectively than one for those of central row floret. Difference for awn length and weight between central and lateral row in nami type cultivars compared to uzu type cultivars was small. In the ratio of weight/length of awn, awn of uzu type cultivars was thicker than that of nami type cultivars, and awn of central row was thicker than those of lateral rows. Kernel weight was linearly related to awn weight. When one spike was divided into three parts, awn length and weight of low part were not different from those of central part, but were longer and heavier than those of upper part. The order of kernel weight was central
Effect of Different Planting Dates on Growth and Yield Component in Two Ecotypes of Soybean
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 86~94
This experiment was carried out to investigate the differences of the growth and yield characteristics at different planting dates in two soybean ecotypes from 1993 to 1994. Two summer types of soybean varieties, Suwon 163 and CNS 342, and two autumn types, Hwangkumkong and Keomcheongkong ＃1 were planted 7 times from 22 April to 21 June with 10 days interval in 1993 and 4 times from 22 April to 21 June with 20 days interval in 1994 at experimental field, Dankook University, Cheonan. Emergence rate was shown to difference between the summer types and the autumn types, as planting date delayed and between 1993 and 1994. The average emergence period was more shortened in 1994 than 1993. This was reduced as planting date delayed. Days to flowering, pod formation and maturity were shortened as planting date delayed, and observed that shortening of days to flowering and maturity were smaller in the summer types than the autumn types. Stem height, stem diameter, number of mainstem nodes, number of branches and number of branch nodes were different between the summer types and the autumn types and between 1993 and 1994. These were reduced as planting date delayed. The number of pods per plant was also different between 1993 and 1994, and reduced as planting date delayed. The number of seeds per pod was not different between 1993 and 1994, and shown to similar tendency as planting date delayed. It was observed that one hundred seed weight of the summer types were reduced, but the autumn types were not as planted date delayed in 1993. In 1994, one hundred seed weight was not measured because almost all pods were unfilled or shriveled probably due to high temperature during pod formation period. The rate of unfilled pods per plant was higher the autumn types than in the summer type of soybeans in 1994.
Differences of Germination Rate, Degree of Solute Leakage and Water Uptake Rate of Soybean Seeds in Two Storage Periods
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 95~102
This investigation was conducted to investigate if germination rate, degree of solute leakage and water uptake rate of seeds are a meaningful information for the selection criteria among soybean genotypes and to find out their characteristics in the variable temperature and moisture conditions encounted during long-term warehouse storage. Germination rate in soybean sprouting box and petri dish differed largely among genotypes stored for twenty months but there was little difference when stored for eight months. Length of hypocotyl was shorter at twenty months of storage than at eight months. Degree of solute leakage of Paldalkong and Pulmuwon was twice higher than that of SS88038 lines at twenty months of storage. In 30 minutes after imbibition, water uptake rate in all genotypes stored for twenty months was faster than these stored for eight months, and water uptake rate in Paldalkong and Pulmuwon stored for eight months was 1.5 and 2 times faster than in SS88038 lines. In correlation coefficients, the germination ability and emergence exhibited significantly negative correlation with degree of solute leakage at twenty months of storage. Water uptake rate in soybean seeds stored for eight months had highly significant positive correlation with degree of solute leakage in 30 minutes and one hour after imbibition while for twenty months of storage, it had highly significant positive correlation with that in 30 minutes, one hour and three hours after imbibition. In eight months of storage, the number of open micropyle had positive correlation with water uptake rate at 30 minutes after imbibiton. But in seeds stored twenty months, it wasn't correlated with water uptake.
Quality Characteristics of Vegetable Soybeans at Different Harvesting Time
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 103~108
The changes in major characteristics of vegetable soybean at different stages were investigated. The 100-seed weight of vegetable soybean had a tendency to increase before 43 days after flowering, but decrease slightly after then. After 37 days after flowering, the sucrose content of Douya had a tendency to decline and in case of Shirofusa, total sugar content was sharply decreased at 40 days after flowering. The total vitamin C content of Douya and Shirofusa was dramatically increased at 37 days after flowering and then got the plateau, otherwise the total vitamin C content of Shirofumi and Hwaeomputkong was the highest level at 43 days after flowering. The hardness changes of vegetable soybeans were tend to increase according days after flowering. In sensory evaluation, preference score was significantly associated with harvesting stages. Correlation coefficient between sweetness and beany taste was significantly negative.
Effect of Tillage Methods of Paddy Field on Yearly Changes of Rice Yield and Soil Properties
Bong Koo, Hur ; Bong Ki, Yun ; Kwan Soon, Choi ;
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 109~114
Field experiment was carried out to investigate the annual changes of rice yield and soil properties. Hwaseongbyeo was cultivated by different tillage methods and fertilizer levels for 5 years in the paddy soil. Tilth efficiency of power tiller(PT) rotary plot was higher by 74.8％, but that of tractor tillage plot was lower by 59.0％. Water requirement in depth of no-tillage plots after rice transplanting was highest and also those of the early growing stage was higher than those of the middle growing stage. Rice yield of PT rotary plot by recommended fertilizer application was increased by 17％ than that of no-tillage plot by conventional fertilizer application. By the rotary of PT and tractor, rice yield increased by 6-17％ than those of no-tillage. In case of cultivating years, rice yield of 2nd year was highest, but that of 4th year was lowest. Soil bulk density and solid phase of no-tillage plot which took not tillage were highest than the other plots. The changes of soil chemical properties in the all treatments had not definite tendency.
Low-Input and Energy Efficiency of Direct Seeding Method in Rice
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 115~122
One of the most laborious work in rice farming is transplanting of rice seedling which has been required preparation of nursery bed and care of seedling during one month period. In this research, direct seeding in dry paddy(DS) and direct seeding in wet paddy(WS) were practiced to compare with traditional transplanting(TP) in Suwon. Growth stages in direct seeding were delayed as its planting time was about 21 days later than those of TP. Heading stage of direct seeding at Suwon was delayed about 9 days as compared to transplanting culture. Rice yield was not different between the seeding practises. Working-hour saving was about 17％(DS) and 28％(WS). Production cost of direct seeding was decreased 20％(DS) and 32％(WS), respectively. Amount of rice production per a unit working-hour in direct seeding could increase 14％(DS) and 39％(WS) compared to that of TP, respectively. Therefore, direct seeding could save significantly working hour and production cost without reducing rice yield. WS was more effective than DS in saving labor and production cost. Direct seeding was not efficient method in input of farming energy and agricultural chemicals.
Effect of Seeding Rates and Growth Regulator Application on Lodging Resistance and Yield in Direct Seeding on Flooded Paddy Surface
KOREAN JOURNAL OF CROP SCIENCE, volume 41, issue 1, 1996, Pages 123~130
Experiments were conducted to effect of seeding rates and growth regulator (KIM-112) application on lodging resistance and yield in direct seeding on flooded paddy surface. The number of seedlings per
were ranged from 61 to 143, and seedling ratios were from 71.7 to 76.1％. The culm length was increased with the higher seeding rates. The culm length was significantly shortened by KIM-112 application, and the shortened effect of internodes were various with application times. The leaf angles with the culm and top leaves were errected and position of light reception by KIM-112 application, also the weight of culm base was increased. The bending moment at breaking of culm and culm diameter were decreased according to the higher seeding rates. The number of panicles per
were increased according to the higher seeding rates. The ripened grain rate and 1, 000 grains weight became higher than the untreated control.