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Research Article
- Determinants of Kimchi Consumption Behavior: A Logit Model Analysis
- Sun-Hyung Min, Sang Hyeon Lee
- This study analyzes factors affecting kimchi consumption using a logit model, focusing on consumption frequency, variety, and preference for kimchi-based dishes. Age …
- This study analyzes factors affecting kimchi consumption using a logit model, focusing on consumption frequency, variety, and preference for kimchi-based dishes. Age and household size directly influence how often kimchi is eaten, with older generations and larger households consuming it more frequently. The variety of kimchi types in a household correlates with household size and income, suggesting that wealthier, larger households have greater access and demand for diverse kimchi types. The preference for dishes with kimchi is linked to gender, household size, and income, with women and high-income, larger households showing a stronger preference. These insights are crucial for the kimchi industry, policymakers, and health experts, aiding in promoting traditional diets, enhancing food security, and improving public health. - COLLAPSE
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Research Article
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Effect of Organic Fertilizer Treatment on Growth Characteristics of Soybean [Glycine max (L.) Merr]
유기질비료 처리가 콩 생육 특성에 미치는 영향
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Hogyun Kim, Yoonha Kim
김호균, 김윤하
- Recent concerns over the environmental repercussions of excessive chemical fertilizer use have led to growing interest in the utilization of organic fertilizers …
- Recent concerns over the environmental repercussions of excessive chemical fertilizer use have led to growing interest in the utilization of organic fertilizers for crop cultivation. However, the effects of organic and inorganic fertilizers on soybean plant growth remain unclear. Therefore, this study aimed to investigate the effects of organic fertilizer application on the shoot, root, and yield-related traits of soybean plants. The experiment was conducted in both the ‘Gunwi’ and ‘Gyeongsan’ regions, with the organic fertilization treatment being compared with a control group. Our results revealed that there were no significant differences in shoot traits between the organic fertilization treatment and the control. However, compared with the control, the organic fertilizer treatment led to a small increase in stem width and branch number. On the other hand, there was no discernible difference between treatments for any root traits, including total root length, surface area, branch number, and average root diameter. Correlation analysis indicated that plant height had the highest positive correlation (r2 = 0.6***) with yield, followed by the total seed number per plant (r2 = 0.41***). In conclusion, the use of organic fertilizers did not result in a significant difference in shoot and root traits compared to the control group. As a result, our experiment found no increase in yield with organic fertilizer application compared with the control. As the experimental field already contained sufficient organic matter, the additional supply of organic and inorganic fertilizers from external sources had no significant effect on the yield. - COLLAPSE
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Effect of Organic Fertilizer Treatment on Growth Characteristics of Soybean [Glycine max (L.) Merr]
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Research Article
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Comprehensive Phenome Survey to Increase the Yield of Buckwheat (Fagopyrum esculentum)
메밀(Fagopyrum esculentum) 수량 증대를 위한 종합적인 표현형 조사
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Minah Oh, Gyung Deok Han, Yong Suk Chung
오민아, 한경덕, 정용석
- Buckwheat is a cereal grain consumed mainly in Asia. This crop has attracted attention owing to the recent increase in demand for …
- Buckwheat is a cereal grain consumed mainly in Asia. This crop has attracted attention owing to the recent increase in demand for alternative grains. Compared to other cereal crops, buckwheat has a higher protein content. It also has substantial quantities of dietary fiber and antioxidant flavonoids. However, there has been few studies on increasing buckwheat yield. In this study, eight buckwheat strains were used to investigate growth characteristics (such as height, stem diameter, number of nodes, number of pedicels, number of seeds per plant, total seed weight per plant, and one hundred grain weight) and flowering characteristics (such as flowering time, flowering period, maturity time, and maturity period). Plant height was found to be positively correlated with stem diameter, number of nodes, number of pedicels, and number of seeds per plant. Thus, if the characteristics of one trait are known, the characteristics of the other traits targeted for breeding can be predicted. Furthermore, individuals that were short, and had thick nodes, and large number of spikes were selected before sowing in the F4 generation; subsequently, it was confirmed that stem length decreased in all strains compared to that in the preceding spring and autumn studies. In the future, we will continue to progress generations by selecting individuals favoring increased yields, by performing growth investigations and tracking changes in traits according to selection. - COLLAPSE
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Comprehensive Phenome Survey to Increase the Yield of Buckwheat (Fagopyrum esculentum)
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Research Article
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Quality Characteristics and Antioxidative Activity of Sulgidduk with Added Kamut (Triticum turanicum Jakubz) Powder
카무트 분말을 첨가한 설기떡의 품질특성 및 항산화활성
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Sunho Lee
이선호
- This study examined the characteristics of Sulgidduk with different kamut (Triticum turanicum Jakubz) powder (MP) concentrations (0%, 5.0%, 10.0%, 15.0%, and …
- This study examined the characteristics of Sulgidduk with different kamut (Triticum turanicum Jakubz) powder (MP) concentrations (0%, 5.0%, 10.0%, 15.0%, and 20.0%). The moisture content of the control sample (MP 0) was the highest at 37.27%, and that of the MP 20 sample was the lowest at 34.10%. Adding MP decreased the L values of Sulgidduk but increased the a and b values. Adding MP decreased the hardness, cohesiveness, and chewiness but increased the springiness. The total polyphenol content and DPPH radical scavenging activity of Sulgidduk with 20% MP was 9.89 mg GAE/100 g, 67.69%. Based on these results, the quality of Sulgidduk with added kamut powder was higher than that of the control Sulgidduk. - COLLAPSE
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Quality Characteristics and Antioxidative Activity of Sulgidduk with Added Kamut (Triticum turanicum Jakubz) Powder
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Research Article
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Performance Analysis of a Maize Harvester Detach-System Using Discrete Element Method (DEM)
이산요소법을 이용한 옥수수 수확기 탈과 시스템의 탈과 성능 분석
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Ho-Seop Lee, Ji-Tae Kim, Young-Jun Park, Jeakeun Woo, Chang-Sub Ha, Dongkeun Lee, Sung-bo Shim
이호섭, 김지태, 박영준, 우제근, 하창섭, 이동근, 심성보
- This study aimed to develop a discrete element model for edible maize to replace factorial experiments with computer simulations. We also performed …
- This study aimed to develop a discrete element model for edible maize to replace factorial experiments with computer simulations. We also performed factorial experiment simulations for the detach-system using the developed model. When the maize stalk was detached, we measured the physical properties of edible maize and the maximum load from the push-pull gauge test. The variables necessary to develop a discrete model of edible maize were determined through parametric studies, and the developed model was validated by comparing it with the physical and mechanical properties of maize. We also performed a simulation analysis on the detach-system using a dynamic simulation model that can evaluate the detaching rate according to the cylinder angle of the detach part. Our results showed that the detaching rate of maize varies depending on the cylinder angle. Furthermore, simulations identified a cylinder angle of 65° or less as ideal with an excellent detaching rate. - COLLAPSE
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Performance Analysis of a Maize Harvester Detach-System Using Discrete Element Method (DEM)
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Research Article
- Evaluation of Physicochemical Separation Characteristics of Pig Manure According to the Type of Solid-liquid Separation Process
- Soo-Ryang Kim, Seung-Hyun Park, Su-Chan Lee, Joshua Nizel Halder, Ji-Won Jung, Sang-Hyean Ahn, Kwon-Woong Ham, Myung-Gyu Lee
- This study evaluated different solid-liquid separation (SLS) methods that are used to treat wastewater and manure originating from pig farms. SLS is …
- This study evaluated different solid-liquid separation (SLS) methods that are used to treat wastewater and manure originating from pig farms. SLS is crucial for recycling and purification of pig manure. We tested 7 SLS processes at 13 farms: centrifuge, centrifuge with a coagulation agent, belt press with a coagulation agent, drum screen, inclined screen, vibration screen, and screw press. We collected manure samples both before and after the SLS separation process, including the separated liquid and solid manure, and analyzed them for pH, electrical conductivity, moisture, chemical oxygen demand (CODMn), five-day biological oxygen demand (BOD5), total nitrogen (TN), total phosphate (TP), K, total solids (TS), suspended solids (SS), sodium chloride, and heavy metals. Belt presses with coagulation agents showed the highest TS and SS reductions (78.8% and 96.9%). Belt press and centrifugation with coagulation agents achieved 41.0% and 94.2% TN and TP removal, respectively. A belt press with a coagulation agent reduced 59.4% and 66.0% BOD5 and CODMn, respectively. A centrifuge with a coagulation agent removed 100% Zn and 98.6% Cu. Drum screens, inclined screens, vibration screens, screw presses, and centrifuges without coagulation had lower removal efficiencies for nutrients, solids, Zn, and Cu compared with that of centrifugal and belt presses with coagulation. Centrifugal and belt presses with coagulation exhibited higher efficiencies for removing nutrients, solids, and metals. Further studies are clarify the effects of SLS on the biological and chemical processes. - COLLAPSE
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Research Article
- Assessment of Bacterial Wildfire Infection in Soybean Cultivars by Hyperspectral Imaging
- Propey Then, Liny Lay, Amit Ghimire, Mohammad Shafiqul Islam, Yoonha Kim
- Soybean [Glycine max (L.) Merr.] is an economically important protein and oilseed legume. Bacterial wildfire, a major biotic stress caused by …
- Soybean [Glycine max (L.) Merr.] is an economically important protein and oilseed legume. Bacterial wildfire, a major biotic stress caused by Pseudomonas syringae pv. tabaci (Pst), has steadily increased in occurrence and severity across several soybean cultivars, presenting a significant risk to soybean production. This study aimed to investigate and evaluate the effect of bacterial wildfires on selected soybean cultivars using imaging approaches, such as hyperspectral and digital imaging with red, green, and blue methods. A significant difference between the tolerance and sensitivity of the plants was observed in this study. In the present study, the disease incidence (DI) exhibited was observed in all soybean cultivars 2 days after inoculation (DAI). Taekwang (52.41%) showed more symptoms with a sensitive response to disease infection and showed a significant difference in DI compared with the other cultivars, whereas Daephung 2, Seunphung, and Soyun showed fewer symptoms on leaves (< 10%). Additionally, among the three vegetation indices (VIs), the normalized difference vegetation, photochemical reflectance, and anthocyanin reflectance indices were significantly correlated with DI at 3 DAI. Hence, these VIs can be used for the early detection of bacterial wildfires; however, further research is needed for more precise and accurate disease detection. - COLLAPSE
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Research Article
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Evaluation of the Ecological Role of Lake Doam in Stream Song by Analyzing the Fish Community
어류군집 분석을 통한 송천 수계 내 도암호의 생태학적 역할
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Doupyo Hong, Jongjin Kim, Jaehoon Kim, Bumjun Kim, Kwangyeol Lee, Hekap Kim, Jaeseok Choi
홍두표, 김종진, 김재훈, 김범준, 이광열, 김희갑, 최재석
- This study evaluated the ecological role of Lake Doam (in six sites: two upper reach points, two lake points, and two lower …
- This study evaluated the ecological role of Lake Doam (in six sites: two upper reach points, two lake points, and two lower reach points) using the fish community distribution and eight matrices of fish assessment index (FAI) from June 2021 to October 2022. This research on fish community distribution identified three legally protected species at the lower reach points and two at the upper reach points. Concerning Korean endemic species, ten were identified at the lower reach points, whereas eight were identified at the upper reach points. The lower reaches attained approximately 16 points higher FAI than the upper reaches. The water quality analysis revealed that the quality of water of lower reaches was better than that of the upper reaches, particularly in terms of electrical conductivity and suspended matter. In conclusion, the purification actions such as sedimentation and dilution in Lake Doam had a positive effect on the lower reach points of the aquatic ecosystem. - COLLAPSE
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Evaluation of the Ecological Role of Lake Doam in Stream Song by Analyzing the Fish Community
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Research Article
- Assessment of the Growth and Ornamental Quality of Senecio haworthii (Sweet) Sch.Bip. Grown under Different Day/Night Temperatures
- Jae Hwan Lee, Sang Yong Nam
- Senecio haworthii is a succulent plant belonging to the Asteraceae family. Optimal growth conditions for this species have not been well-established. In …
- Senecio haworthii is a succulent plant belonging to the Asteraceae family. Optimal growth conditions for this species have not been well-established. In this study, we investigated the optimal day/night temperature range for enhancing the growth and ornamental quality of S. haworthii. Four day/night temperature treatments were designed as follows: 20/15, 24/19, 28/23, and 32/27°C. Based on the plant sizes and biomass analysis, the best growth performance was determined to be achieved under a relatively low-temperature treatment of 20/15°C. Conversely, the 32/27°C treatment resulted in the lowest growth rates, likely attributed to decreased leaf function caused by prolonged exposure to high-temperature conditions. Additionally, leaf color analysis using the CIELAB color space revealed that CIELAB L*, representing lightness, and CIELAB a*, indicating green-red opponent colors, proportionally increased with the rise in day/night temperature levels. Previous studies have reported an inverse relationship between L* and plant growth parameters. Consistent with previous research, the treatment at 32/27°C, which exhibited the lowest growth, showed higher L* values. Conversely, the CIELAB b* value, representing blue-yellow opponent colors, was highest under the 20/15°C treatment, suggesting leaf-yellowing tendencies in relatively lower temperature conditions. Based on the color difference analysis using CIE76 color difference (ΔE*ab), temperatures of 20/15 and 24/19°C were used as reference points; under these conditions, the temperatures of 28/23 and 32/27°C were evaluated as having a ‘small color difference’. Therefore, even with significant differences in day/night temperatures, no noticeable differences were concluded to be found in leaf color. Based on these findings, cultivating S. haworthii in relatively low-temperature conditions of around 20/15°C is concluded to be advantageous for enhancing both plant growth and ornamental quality compared to higher temperature conditions such as 32/27°C. - COLLAPSE
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Research Article
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Improvements in Sex Pheromone Synthesis for Eco-friendly Control of Mythimna separata
멸강나방 환경친화적 방제를 위한 성페로몬 합성 공정의 개선
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Seon Hee Choi, Hye Ran Son, Young Don Lee
최선희, 손혜란, 이영돈
- Previous methods for controlling Oriental armyworm (Mythimna separata) using sex pheromones involved the use of effective compounds, such as (Z)-11-hexadecenal, …
- Previous methods for controlling Oriental armyworm (Mythimna separata) using sex pheromones involved the use of effective compounds, such as (Z)-11-hexadecenal, (Z)-11-hexadecenyl acetate, and (Z)-11-hexadecenol. However, the existing method, which introduces double bonds via the Wittig olefination reaction, struggles to achieve a high cis-isomer purity of over 95% due to poor cis stereoselectivity during double bond introduction. This study aimed to address the above issue by synthesizing 1,10-dibromodecane and 1-hexyne, which are commercially available and inexpensive, through catalytic reduction, thereby facilitating practical application and contributing to the development of environmentally friendly pest control strategies. - COLLAPSE
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Improvements in Sex Pheromone Synthesis for Eco-friendly Control of Mythimna separata
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Research Article
- Changes in Growth, Visual Qualities, and Photosynthetic Parameters in Peperomia Species and Cultivars under Different Color Temperatures of White Lighting Conditions
- Eun Ji Shin, Jae Hwan Lee, Sang Yong Nam
- Peperomia, the commonly cultivated house plants, are known for their superior shade tolerance, and suitability as ornamental indoor plants. Here, the …
- Peperomia, the commonly cultivated house plants, are known for their superior shade tolerance, and suitability as ornamental indoor plants. Here, the effects of different color temperatures of white light-emitting diodes (LEDs) were experimentally investigated on Peperomia. Three white LEDs with different color temperatures of 3000, 4100, and 6500 K, respectively, were used in the cultivation of Peperomia species and cultivars namely: P. obtusifolia, P. caperata cv. Napoli Nights (‘Napoli Nights’), and P. caperata cv. Eden Rosso (‘Eden Rosso’) for experimental purposes. Results showed that the sizes of the plants P. obtusifolia and ‘Napoli Nights’ were optimal under 4100 and 6500 K white LEDs, whereas, ‘Eden Rosso’ exhibited optimal growth under 6500 K white LED. Compared to the other plants, P. obtusifolia exhibited superior biomass production under 4100 K white LED. Conversely, ‘Eden Rosso’ and ‘Napoli Nights’ had the highest biomass under 6500 and 3000 K white LEDs, respectively. Regarding the leaf color, L* and b* values demonstrated an inverse relationship with plant biomass, suggesting that leaves turn yellow when the growth of a plant is inhibited. Fv/Fm ranged from 0.77 to 0.81 across all treatments, and these values are generally acceptable. Compared to the other plants, P. obtusifolia and ‘Eden Rosso’ had higher ΦDo, ABS/RC, and DIo/RC under 6500 and 3000 K white LEDs, respectively, contradicting the results observed for plant sizes. In addition, PIABS values were higher for P. obtusifolia under 4100 and 6500 K white LEDs and the highest for ‘Eden Rosso’ under 6500 K white LED. In conclusion, P. obtusifolia can be cultivated under 4100-6500 K white LEDs, whereas, ‘Eden Rosso’ and ‘Napoli Nights’, under 6500 and 4100 K white LEDs, respectively. - COLLAPSE
Journal Informaiton
Journal of Agricultural, Life and Environmental Sciences
Journal of Agricultural, Life and Environmental Sciences
Agriculture and Life Sciences Research Institute, Kangwon National University
강원대학교 농업생명과학대학 농업생명과학연구원
1 Kangwondaehak-gil, Chuncheon, Gangwon 24341, Korea
Tel: +82-33-250-6408 / Fax: +82-33-259-5743 / E-mail: alsri@kangwon.ac.kr Copyright© Agriculture and Life Sciences Research Institute, Kangwon National University
Tel: +82-33-250-6408 / Fax: +82-33-259-5743 / E-mail: alsri@kangwon.ac.kr Copyright© Agriculture and Life Sciences Research Institute, Kangwon National University