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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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KOREAN JOURNAL OF CROP SCIENCE
Journal Basic Information
Journal DOI :
The Korean Society of Crop Science
Editor in Chief :
Volume & Issues
Volume 56, Issue 4 - Dec 2011
Volume 56, Issue 3 - Sep 2011
Volume 56, Issue 2 - Jun 2011
Volume 56, Issue 1 - Mar 2011
Selecting the target year
Analyzing the Effect of Climatic Variables on Growth and Yield of Rice in Chuncheon Region
Lee, An-Soo ; Kim, Jae-Rok ; Cho, Youn-Sang ; Kim, Yong-Bog ; Ham, Jin-Kwan ; Jeong, Jeong-Su ; Sa, Jong-Gu ; Shin, Jin-Chul ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 99~106
DOI : 10.7740/kjcs.2011.56.2.099
Here we reported an analyzing result for the relationship between climatic variables and rice(c.v. Odaebyeo and Ilpumbyeo) yield characteristics (including some growth characteristics) based on a long-term observed data at GARES and at KMA for rice and weather, respectively. Most of crop parameters investigated, such as heading date, culm height, panicle number
, grain number
ripening rate, 1,000 grain weight and yield were strongly affected by wind velocity and relative humidity, as well as by daily mean air temperature, precipitation, sunshine hours and daily variations in air temperature depending on variety and crop developmental stages. Air velocity and relative humidity had not been studied as climatic variables affecting on the characteristics of rice growth and yield, however, they turned out to affect all the characteristics of rice investigated, especially ripening rate and yield, as much as any other climatic variables in this study. Air velocity appeared to affect highly the culm height and yield of Odaebyeo and ilpumbyeo. Relative humidity appeared to affect highly grain number and ripening rate of Odaebyeo and yield of Ilpumbyeo. Consequently Rice yield revealed to increase in the climatic conditions of high air velocity and low relative humidity.
Quality Characteristics of Bread Added with Oat Flours
Lee, Na-Young ; Ha, Ki-Young ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 107~112
DOI : 10.7740/kjcs.2011.56.2.107
Oat flour was purchased and investigated for quality characteristics of oat bread. Antioxidant and flour pasting properties of oat flour, and water content, weight, volume, Hunter color value, texture of bread were measured. DPPH radical scavenging capacity (%) of oat extract was 68.49%. Pasting temperature of oat flour ranged between
. Flour pasting properties of sample added with 10 and 30% oat flour was shown similar results compared with wheat flour. Final viscosity of sample was increased by adding concentration of oat flour (up to 311.65 RVA). Water content (%) of bread was shown increasing trend by adding oat flour. Weight of bread loaf with 100% oat flour was shown higher score than other samples. Volume of loaf by adding oat flour of 10, 30, and 50 % ratio was 550, 450, and 388 mL, respectively. The Hunter color
values of bread by adding oat flour was dark compared with wheat bread. Color value of bread added 10% oat flour was similar results with
values of bread with wheat flour. The bread added with 20 and 30% oat flours had the higher hardness, gumminess, and chewiness compared with other samples. Cohesiveness of the bread with wheat flour showed higher than that of bread added with oat flour and increased by storage period. The growth of total viable cell was inhibited depending on the concentration of oat flour during storage.
Bio-degradable Characteristics and Mechanical Properties of Mulching Films Containing Rice By-product
Han, Sang-Ik ; Kang, Hang-Won ; Byun, Dae-Woo ; Jang, Ki-Chang ; Seo, Woo-Duck ; Ra, Ji-Eun ; Kim, Jun-Young ; Choi, Kyung-Jin ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 113~118
DOI : 10.7740/kjcs.2011.56.2.113
This study was aimed to develop blend films by rice by-product (rice-hull and rice-bran) and bio-degradable materials. The rice by-product was firstly prepared from the pulverizing for making fine powder. Bio-degradable materials could be prepared by melting at high temperature. The mixture of the fine powder of rice by-product and melted bio-degradable materials was then blended and cast into films. The obtained films were investigated on their morphology, secondary structures and properties by using SEM, ICP and ASTM, respectively. Mechanical properties and degradability of these films were measured and compared to those of the PE films. Mechanical strength of bio-films was higher than that of PE films, however elongation ratio showed lower percent than that of PE film. In addition, bio-film could be degraded into fragments within 3 months under the field condition of normal upland crop cultivation. Bio-degradable mulching film indicated great potential for agronomic use as a new source of bio-degradable material.
Effect of Barley Green Manure on Rice Growth and Yield According to Tillage Date in Spring
Kim, Min-Tae ; Ku, Ja-Hwan ; Jeon, Weon-Tai ; Seong, Ki-Yeong ; Park, Chang-Young ; Ryu, Jin-Hee ; Cho, Hyeoun-Suk ; Oh, In-Seok ; Lee, Yong-Hwan ; Lee, Jong-Ki ; Park, Man ; Kang, Ui-Gum ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 119~123
DOI : 10.7740/kjcs.2011.56.2.119
To use barley as a green manure crop, this study has been conducted in Suwon, Gyeonggi-do to establish the barley green manure (BGM)-rice cropping system with emphasis on soil incorporation date and BGM density. The nitrogen (N) contents of rye and barley, grass green manure crops, were 1.4~2.4% at early growth stage and decreased rapidly to 0.6~1.0% at late growth stage. The biomass of barley was 449 kg/l0a at heading stage (HS) and increased to 421 kg/10a at 10 days after heading stage (DAH), 473 kg/10a at 20 DAH. C/N ratio of BGM was the lowest 26.3 at HS. The N contents of BGM was in the range of 0.9~1.5%, the highest at HS and gradually decreased, and the output of N were 4.3-6.3 kg/10a. The total amount of nitrogen, phosphorous and potassium of BGM showed the highest level at 10 DAH. Culm length of rice was relatively longer as the BGM application time was delayed. The application of BGM into soil increased plant height of rice by 7.2~7.7 em as compared to the plants treated with commercial fertilizer at recommended rate. but panicle length of rice showed a similar tendency in both the soil-applied of BGM and commercial fertilizer. N contents of unhulled rice was the highest at HS of BGM and followed by 10 DAH of BGM and 20 DAH of BGM. This trend could also be seen in rice straw. The yield of rice in the soil-applied of BGM was 10~15% lower than in the soil-applied of commercial fertilizer. Based on this study, application of BGM made it possible to save 30~50% of application amount of nitrogen fertilizer for following crops.
Genetic Analysis on the Bacterial Blight Resistance Gene from a Wild Relative, Oryza minuta
Jeung, Ji-Ung ; Roh, Tae-Hwan ; Kang, Kyung-Ho ; Shin, Young-Seop ; Kim, Yeon-Gyu ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 124~133
DOI : 10.7740/kjcs.2011.56.2.124
Bacterial blight (BB), cuased by the vascular pathogen Xanthomonas oryzae pv. oryzae, is one of the major threats in rice fields worldwide. In Korea, two resistance genes against BB, Xa1 and Xa3 had been intensively used for developing high quality japonica rice cultivars. Those traditional resistance sources have being rapidly ified by the adopting of BB pathogen through mutations of the corresponding avr-genes, such as K3a exhibiting high compatibility to both Xa1 and Xa3. To expanding genetic resource against BB in Korea, the Suweon506, an introgression line between a Korean japonica cultivar, Hwaseong and a wild relative, Oryza minuta, was be subjected for genetic analysis owing to the BB resistance. Through association analyses between the pathotyping and genotyping results for each
progenies, derived from a cross between Suweon506 and a Tongil type cultivar, Milyang23, a major resistant dominant gene is localized on the subterminal region of rice chromosome 4, where at least three BB resistancde genes, Xa1, Xa2, and Xa22, were reported previously.
Effects of Hairy Vetch and Rye Cover on Weed Occurrences and Minor Cereal Growth
Jeon, Seung-Ho ; Lee, Se-Hun ; Oh, Se-Yun ; Kim, Young-Ju ; Kim, Kyung-Moon ; Kim, Seok-Hyun ; Hwang, Jae-Bok ; Yoon, Seong-Tak ; Shim, Sang- In ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 134~139
DOI : 10.7740/kjcs.2011.56.2.134
This study was conducted to evaluate the weed suppressing effects of two winter cover crops, hairy vetch and rye in foxtail millet and sorghum fields in 2010. Crop growth and development and weed occurrences in the fields were examined to know the efficiency of proposed cropping system. In hairy vetch treated plots, heading of minor cereals occurred early. The heading date was earlier by 1 day and 2 days in sorghum and foxtail millet, respectively. However, rye treatment delayed heading by 12 days and 8 days in sorghum and foxtail millet, respectively. Besides he effect of cover crop on ear emergence of crops, the Besides changed growth-related characteristics. Plant height, chlorophyll content and chlorophyll fluorescence of sorghum ere increased in hairy vetch treatment by 46.4% 88.7% and 7.9%, respectively. In foxtail millet, the characteristics ere also increased by 45.6%, 50.9% and 37.8%, respectively, s compared to control. Yields of sorghum and foxtail millet were increased by 105.1% and 135% as compared o control by hairy vetch treatment, respectively. However, he yields of cereal crops were decreased by rye cover crop treatment, the yields of sorghum and foxtail millet were decreased by 25.8% and 119.1%, respectively. Rye cover crop treatment inhibited crop growth suggesting nitrogen starvation in rye treated plots. In rye treatment, plant height, chlorophyll contents and chlorophyll fluorescence of sorghum ere slightly decreased by 7.1%, 10.8% and 10.8%, respectively, as compared to control whereas the inhibitory effects were greater in foxtail millet. Weed occurrences based n weed number in hairy vetch and rye plots were reduced n weed number in hairy vetch and rye plots were reduced y 27% and 20%, respectively. The smothering effect was weakened or disappeared after heading of crops. Weed number and dry weight in hairy vetch plot were increased by 159% and 55.2%, respectively, as compared to control. The results implied that weed suppressing of cover crops could be reduced drastically after heading of crops.
Effects of Split Application of SCB Liquid Fertilizer on Rice Yield and Soil Chemical Property in Honam Plain Field
Lee, Sang-Bok ; Cho, Kwang-Min ; Yang, Chang-Hu ; Oh, Young-Jin ; Park, Tai-Il ; Kim, Kee-Jong ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 140~145
DOI : 10.7740/kjcs.2011.56.2.140
In order to establish the application method of slurry composting & biofilteration liquid fertilizer (SCB LF) in rice cultivation, experiments were studied on split application method of it and effects of it on soil chemical properties and rice yields. Land leveling by rotary tillage within 2 days after application of SCB LF,
-N concentration in soil was maintained uniformly in all paddy field. Initial concentrations of
-N in soil were high at standard fertilization and 100% application of SCB LF as basal fertilization, however, after tillering stage they maintained similar concentrations in all experimental plots.
-N content in infiltration water was slightly lower at 70% application of SCB LF as basal fertilization and 30% application of SCB LF as fertilization at panicle initiation stage than at standard fertilization. Yields of rice by split application of SCB LF were lower at 100% application of SCB LF as basal fertilization, however, those of the other application of SCB LF were similar with that of standard fertilization. In case of rice quality, perfect kernel rates were high and protein contents were lower at non-application and 100% application of SCB LF. Rice quality of 70% application of SCB LF as basal fertilization and 30% application of SCB LF as fertilization at panicle initiation stage were similar with that of standard fertilization.
Changes of Nitrogenous Compound According to the Topping Stage and Harvesting Time in Burley Tobacco(Nicotiana tobacum L.)
Jang, Soo-Won ; Kim, Jae-Hyun ; Park, Chang-Jin ; Kim, Yoon-Ha ; Lee, In-Jung ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 146~150
DOI : 10.7740/kjcs.2011.56.2.146
A large amount of nitrogenous compounds are found in burley tobacco and are responsible for peculiar aroma during smoking. Excess in nitrogen or its compounds such as total nitrogen and proteins in burley tobacco gives a strong pungency and make its taste bad. The present study has focused on improving quality of Burley tobacco by regulating topping and harvesting time of leaf to reduce nitrogen compounds in Burley tobacco. In addition, the early-stage of flower topping had lower level of nitrogenous compound, such as total nitrogen and protein nitrogen, and total tobacco-specific nitrosamine (TSNA) contents compared to the button-stage and full flower-stage topping. Also, the contents of nicotine got significantly decreased while the ether extract was increased as the period of topping got delayed. Regarding the brightness among the colors of cured leaves, the color at the full flower-stage topping was the brightest, and there was no particular difference in red and yellow colors. The harvesting amount was decreased as the period of topping got delayed and there was no significant difference between the topping treatments in terms of the exterior quality. As the harvesting time delayed, the total nitrogen, protein nitrogen, nitrate nitrogen, and ammonium nitrogen were decreased while the nicotine contents got increased. Also, the total TSNA contents were decreased as the harvesting time delayed. However, ether extract was increased. Among the colors of cured leaves, the brightness and degree of yellow color were significantly increased as the harvesting time delayed, and there was no particular difference in the degree of red color. The harvesting amount was decreased along with the delayed harvesting time; however, the harvest of the matured and mellow leaves was higher in terms of price, compared to that of the immature leaves. For the reduction of nitrogenous compound and TSNA contents in Burley tobacco, the topping was examined to be more effective in terms of improvement in chemical contents and quality regardless of the decreased harvesting amount.
Agronomic Characterization of Sorghum bicolor (L) Moench Germplasm Collected in Gangwon-do for Bio-energy Crop
Seong, Eun-Soo ; Yoo, Ji-Hye ; Lee, Jae-Geun ; Hwang, In-Seong ; Kim, Nam-Jun ; Kim, Myong-Jo ; Lee, Ju-Kyung ; Ghimire, Bimal Kumar ; Lim, Jung-Dae ; Yu, Chang-Yeon ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 151~158
DOI : 10.7740/kjcs.2011.56.2.151
Forty nine accessions of the Sorghum bicolor (L) Moench collected from different agronomical zone of Gangwondo province, Korea were characterized morphologically on field trial. Plant length, stem diameter, tiller number, ear type, ear length, ear width, leaves length, leaves width and leaf color differed significantly in the cultivated accessions. Out of forty nine test accessions, six accessions (12.2%) showed comparatively taller height, measuring more than 300 cm, while, other ten test accessions (20.4%) were measured from 200~300 cm. There were no significant differences in the diameter of stem in the collected test accessions (2~3 cm). Of the total test accession, seven accessions showed leaf length of over 70 cm, and twenty two test accession revealed leaf length between 60-70 cm. Forty nine of the collected test accessions showed narrow and short leaves with white mid vain. These results provided additional information for the breeding programs and conservation of Sorghum bicolor as a bio-energy crop.
Effect of Top Dressing and Harvest Time on Growth, Feed Value, and Anthocyanin Content of Colored Barley
Song, Tae-Hwa ; Han, Ouk-Kyu ; Kim, Yang-Kil ; Park, Tae-Il ; Park, Ki-Hun ; Kim, Kee-Jong ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 159~166
DOI : 10.7740/kjcs.2011.56.2.159
This experiment was carried out to evaluate the effects of top dressing of nitrogen and harvest time on the growth, feed value and anthocyanin content for developing functional feed of colored barley. A colored barley cultivar, Boanchalbori, was tested in this experiment. Top dressing was applied at seven separate growth stages, regeneration time (RT), and intervals of 20, 30, 40, 50, 60, and 70 days after RT, and harvested at different time from 20 days after heading (DAH) to 40 DAH with 10 days interval in split plot design with three replications. Plant height was increasing with earlier top dressing, but not affected by harvest time. Percent dry matter was increasing with earlier top dressing and later harvests. Protein content was increased with later top dressing and harvests, but percent NDF, ADF and TDN was not significant. Total anthocyanin content was increased with earlier top dressing, included increasing C3G (cyanidin-3-glucoside) and delphinidin. The C3G and delphinidin were detected from 25 DAH and P3G (pelargonidin-3-g1ucoside), cyanidin and perlagonidin from 30 DAH. Their contents were increased significantly as harvest was delayed. This experiment provides some interesting results with respects to optimum top dressing and harvest time for the functional feed production of the colored barley.
Screening of Resistance Genes Linked to Brown Planthopper Using STS Marker in Aromatic Rice Germplasm
Kim, Jeong-Soon ; Ahn, Sang-Nag ; Hong, Sung-Jun ; Park, Jong-Ho ; Lee, Min-Ho ; Han, Eun-Jung ; Damodaran, P.N. ; Kim, Yong-Ki ; Jee, Hyeong-Jin ; Shim, Chang-Ki ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 167~176
DOI : 10.7740/kjcs.2011.56.2.167
Brown planthopper (BPH) is a serious insect pest of rice crop throughout rice growing countries, and yield loss due to its infection can be up to 60%. This study aimed to evaluate efficiency of molecular markers for screening BPH resistance accessions among 86 aromatic rice germplasm Eighty-six accessions of aromatic rice germplasm included two accessions of Tongil type (bred in Korea), 28 accessions of japonica type and 56 accessions of indica type. We applied eight STS markers (pBPH9, pBPH19, pBPH20, pBPH21, AJ09-b, RG457L, RG457B, and 7312.T4A) which were linked to four of BPH resistance genes, Bph1, Bph13(t), Bph10, and Bph18(t) respectively. One japonica type accession, 415XIr352, and six indica type accessions possessed one or four positive bands when tested with four STS markers linked to Bph1 gene. One indica type aromatic rice, Basmati9-93, showed the target bands linked to the Bph10 gene. The other accessions did not show same fragments as the respective resistant lines. Bph13(t) is the most widely introduced resistance gene and only one accession showed positive bands implying that this accession might harbor Bph10 and Bph18(t) genes. Three aromatic accessions, Domsiah, Khao Dawk Mali 105 and 415XIr352 showed gene pyramiding of Bph1 and Bph13(t). Two indica aromatic rice, Ds 20 and Basmati 9-93, possessed at least two BPH resistance genes, Bph1, Bph18(t) and Bph13(t), Bph18(t), respectively. These results indicates that aromatic rice germplasm have narrow diversities of BPR resistance genes.
Establishment of Perfect-Drainage Period for Reduction of Salt Injury and Improvement of Grain Filling Ratio in the Newly Reclaimed Land
Choi, Weon-Young ; Yang, Chang-Hyu ; Lee, Jang-Hee ; Kim, Taek-Kyum ; Jeong, Jae-Hyeok ; Cho, Min-Kyu ; Kim, Si-Ju ;
KOREAN JOURNAL OF CROP SCIENCE, volume 56, issue 2, 2011, Pages 177~181
DOI : 10.7740/kjcs.2011.56.2.177
This research was carried out to establish perfect-drainage time in order to stabilize rice yield and improve rice quality. Treatments of perfect-drainage were conducted 5 days interval during 25 days to 50 days after heading date in the field of Saemangeum Gyehwa, newly reclaimed land. Accumulated temperature after heading date in 2010 increased about
and precipitation amount decreased a little compared to normal year harvesting time. Average panicle number was 16.5 and spikelet per panicle was 88. Perfect drainage time treatment after 40~50 days was 3% higher in percent ripened grain and 0.6 g heavier in 1,000 grain weight than treatment after 25~35 days. There was no difference of rice yield between perfect drainage time treatment after 25 days and 30~35 days, but rice yield was 7~8% higher in treatment after 40~50 days than 25 days. Head rice ratio in treatment after 35 days was the highest and the sooner perfect drainage time, the lower protein content. Soil moisture negatively correlated with soil hardness and EC in this result. With this results, we proposed that the time of perfect drainage in newly reclaimed land to stable rice production is 40~50 days after heading date.