• Title/Summary/Keyword: 양액

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Growth and Antioxidant Activity of Gynura procumbens by Natural Media Composition in Hydroponic Cultivation Using Organic Nutrient Solution (유기 수경재배 시 천연배지 조성에 의한 명월초 생육 및 항산화 활성)

  • Lee, Kyu-Hoi;Lee, Sung-Hee;Kim, Ju Hyoung;Park, Jae-Ho
    • Korean Journal of Organic Agriculture
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    • v.27 no.3
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    • pp.341-351
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    • 2019
  • Gynura procumbens (Family Asteraceae) is a medicinal plant commonly found in tropical Asia countries such as China, Thailand, Indonesia, Malaysia, and Vietnam. Traditionally, it is widely used in many different countries for the treatment of a wide variety of health ailments such as kidney discomfort, rheumatism, diabetes mellitus, constipation, and hypertension. The objective of this study was to select the natural growth media for hydroponic cultivation of Gynura procumbens. The commercially available thirty four different organic nutrient solutions were analyzed for growing Gynura procumbens. After analysis, two organic nutrient solution were selected, mixed (pH 5.5~6.5 / EC 0.5~1.0 ds/m) and then used as organic fertilizers. Thirty day old seedlings were planted and the environmental conditions of the rhizosphere were also examined to select the natural media composition. The minimum temperature of rhizosphere by type of natural media was highest in cocopeat media and lowest in perlite media. Furthermore, plant growth was examined from 50 days old seedlings, and vermiculite was observed to be most effective and perlite was the least effective component as natural media. The total polyphenol content of the studied plant material was also higher in vermiculite in comparison to other growth media. The Gynura procumbens yields were also higher in vermiculite in comparison to other growth media. Thus, vermiculite can be used to improve Gynura procumbens plant growth as a natural growth media.

Productivity of Major Varieties of Cucumber in Retarding Culture under Hydroponic Condition (주요 오이품종들의 억제작형 양액재배 수량성 비교)

  • Lim Jung-Mook;Kwon Byung-Sun;Shin Dong-Young;Hyun Kyu-Hwan;Kim Hak-Jin;Chung Soon-Ju;Lee Beom-Seon;Lim June-Taeg
    • Korean Journal of Plant Resources
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    • v.19 no.2
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    • pp.223-226
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    • 2006
  • This study was conducted to select proper varieties of cucumber by comparing growth and yield in retarding cultivation under hydroponic culture. Number of leaves appeared to be the highest Chungjangoi and the lowest in Heukjinjuoi. Heukjinjuoi showed higher vegetative growth rate. Heukjinjuoi showed the highest number of female flowers while Chungjangoi the lowest. The ratio of female flower was the highest in Heukjinjuoi and the lowest in Chungjangoi. Abortion of female flower appeared to be the highest in Heukjinjuoi and the lowest with 0% in Chungjangoi. There was no significant difference in yield between treatments of removal and not-removal of lateral buds.

Use of East Deep Sea Water for the Increase of Functional Components of Ginseng (Panax ginseng C.A. Meyer) and Tomato (Lycopersicon eculentum L.) (인삼과 토마토의 기능성 성분 증진을 위한 동해 해양심층수의 이용)

  • Woo Cheon-Seok;Kang Won-Hee
    • Korean Journal of Plant Resources
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    • v.19 no.2
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    • pp.331-335
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    • 2006
  • This experiment was conducted to investigate the effect of deep sea water on fruit quality and yield of tomato. In the deep sea water treatments, fruit growth and weight were decreased as the concentration of deep sea water increased. Especially, the fresh weight of second truss was decreased significantly than first truss. Soluble solid content was increased significantly in higher concentration treatment especially at 30mM and 40mM treatment. That was increased more in the first than in the second truss fruits. Most of hexose in fruits were glucose and fructose. The reason of increased glucose and fructose contents was the decline of growth because of salinity stress by deep sea water treatment. however deep sea water treatment increased the lycopene content, especially in 20mM treatment. It is assumed that deep sea water treatment cause induction and promotion of ethylene. The higher concentration of deep sea water to the solution, the eater fruit quality improvement was noticed. However, proportional yield reduction accompanied concentration, 20mM deep sea water improved fruit quality without a significant yield reduction. The Re content was the highest among ginsenosides in all treatments. The contents total of ginsenosides in all treatments, except EC 8 treatment, was higher than those in the controlled treatment. The PT/PD value was 1.31 of the lowest in the EC 8 treatment and was 2.52 of the highest in the EC6 treatment. Rf contents in high increase was detected at all treated ginseng roots.

Oral Single-dose Toxicity Studies on Germanium-fortified Lettuce, in Mouse (게르마늄을 함유한 상추의 단일 경구투여 독성 검사)

  • Kim, Jong-Jin;Choi, Ji-Na;Cho, Ju-Sik;Heo, Jong-Soo;Yee, Sung-Tae
    • Korean Journal of Environmental Agriculture
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    • v.28 no.1
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    • pp.59-68
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    • 2009
  • Single-dose toxicity test of germanium-fortified lettuce was investigated in mice. Both sexes of C57BL/6 mice were orally administered once at a dose of 2,000 mg/kg. No death, clinical signs and pathological findings related to the treatment were observed. In addition, no significant changes in feed consumption and body weight gain were obtained during the treatment period, in spite of day-to-day fluctuation of water consumption. There were no considerable changes in hematology and serum biochemistry, except a significant decrease in GPT, GOT and LDH. Several alterations were observed in organ weight and blood biochemistry, including thymus, ovaries, heart, kidney and platelet in male or female mice. The ability of spleen cells proliferation was almost same level as shown in control group. However the population of B cells, helper T cells and cytotoxic T cells was not comparably changed in all groups. Taken together, it is suggested that single oral dose of germanium-fortified lettuce to C57BU6 mice did not cause apparent toxicological change at the dose of 2,000 mg/kg body weight.

Effect of Relative Humidity on Calcium Uptake of Tomato Plant (상대(相對) 습도(濕度)가 토마토의 Ca흡수(吸收)에 미치는 영향(影響))

  • Cho, Ill-Hwan
    • Korean Journal of Soil Science and Fertilizer
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    • v.30 no.2
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    • pp.178-183
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    • 1997
  • The effect of different relative humidity(RH) of atmosphere on the uptake of calcium by tomato plant was investigated through an experiment in the protected cultivation system. The RH regime was imposed by humidifiying by humidifier in one plot, and by mulching the ridge to cut down the evaporation of water to lower the RH, in another plot. During the course of plant growth, RH in the humidified plot, at noon, was about 70%, while in non-humidufied plot, RH was about 50%. The humidification also resulted in the lowering of temperature significantly(by about, $3.1^{\circ}C$). This higher RH of atmosphere under humidifying treatment, resulted in the increase in the water efflux rate of root significantly(greater by 0.24g/g dry root/h than that under mulching treatment). Relatively severe occurrence of blossom end rot(23%) was observed in the humidifying treatment, while no such symptom occurred in mulching plot. The efflux rates of Ca, K and Mg were found to be higher in the humidifying plot. It was also observed that the concentrations of Ca, Mg and K in the xylem solution was 2-4 times higher than that of gydroponic solution. This suggested that the occurrence of blossom end rot, under high RH of atmosphere, would not be due to the decrease in the uptake of Ca per se, by tomato plant, but due to anomalies in the distribution of it within the plant.

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Selection of Compound Leaf Position for Sap Test of Hydroponic Tomato and Relationship between Inorganic Elements of Sap and Dried Matter (양액재배 토마토의 즙액검정을 위한 엽위 선정과 즙액 및 건물체의 무기원소 상관 관계)

  • Kim, Yang-Rok;Kang, Tae-Woo;Song, Sung-Jun;U., Zang-Kual
    • Korean Journal of Soil Science and Fertilizer
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    • v.36 no.6
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    • pp.391-398
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    • 2003
  • Research was conducted to establish the leaf and petiole sap test to diagnose the nutritional status of tomato. The concentrations of $NO_3$, $PO_4$, K, Ca, Mg and $SO_4$ ions extracted from the leaves and petioles in the different positions in a plant were measured and compared with their corresponding inorganic contents in the leaves analyzed by the chemical method. The ionic concentrations in the leaf and petiole sap showed the different values depending on their positions in a plant. The leaves and petioles in the lower positions of a plant had higher concentrations of $NO_3$, Ca, Mg and $SO_4$ ions. In particular, there were greater changes of ionic concentrations and less increases in the leaf length and width from the 9th compound leaf down from the uppermost cluster. On the other hand, the leaflets in a compound leaf had the same ionic concentrations. Therefore, it appeared that the optimal sampling position of leaf and petiole for the sap test is the leaflets of the 9th compound leaf down from the uppermost cluster. A good correlation between the sap test and the chemical analysis of plant showed that the ionic concentrations in the leaf and petiole sap reflect the nutritional status of tomatoes.

Basic seed production using aeroponic system in double cropping (가을감자 기본종생산을 위한 분무경 재배시 적품종 선발)

  • Cho, Il-Chan;Chang, Dong-Chil;Kim, Hyun-Jun;Cho, Hyun-Mook
    • Journal of Plant Biotechnology
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    • v.38 no.1
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    • pp.49-53
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    • 2011
  • The present study was performed to select suitable potato (Solanum tuberosum L.) varieties for double cropping in seed production using aeroponic system, the nutrient solution was sprayed for 20 seconds in every 3 minutes, and potatoes were planted into styrofoam at a distance of 25 cm between plants. Transplantation was completed in September 9 and potatoes were harvested in November 12. The 10 trial cultivars, 'Atlantic', 'Dejima', 'Haryong', 'Hongyoung', 'Jayoung', 'Jopung', 'Jowon', 'Namsuh', 'Seohong', 'Superior' were examined for growth and yield. The shoot growth of all cultivars at the early stage was better than 'Superior', however, no difference was observed at the late stage of plant growth. In addition, 'Superior' showed a excellent root growth during the early plant growth stage, however, increased root growth was only found in 'Jayoung', 'Seohong', during the late plant growth stage. The stolon weight was greater in the order of 'Seohong'>'Superior'>'Jayoung'>'Hongyoung'. Particularly, the number of tuber in 'Jowon' was 22.4/plant that was over twice than 'Superior'(11.3/plant). As results of the current study, therefore, we concluded that four cultivars 'Seohong', 'Jayoung', 'Hongyoung', 'Jowon'were the most suitable cultivars for basic seed production using aeroponic system in Autumn potato.

Analyses of Microbiological Contamination in Cultivation and Distrubution Stage of Tomato and Evaluation of Microbial Growth in Tomato Extract (토마토의 생산·유통단계에서 유해미생물 오염 및 추출물에서 미생물 증식)

  • Yun, Hyejeong;Park, Kyeonghun;Ryu, Kyoung-Yul;Kim, Byung Seok
    • Journal of Food Hygiene and Safety
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    • v.28 no.2
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    • pp.174-180
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    • 2013
  • This study investigated the microbiological contamination of tomato in cultivation and distribution stage. Growth of Escherichia coli O157:H7 and Listeria monocytogens examined in tomato extracts (0.1, 1.0, and 10.0%) and incubation temperatures (5, 15, 25, and $35^{\circ}C$). In cultivation stage of tomato, total aerobic bacteria were 7.77 log CFU/g in gloves of APC (Agricultural Products Processing Center) worker and Bacillus cereus were 0.33 log CFU/g at nutrient tank, respectively. And Staphylococcus aureus, Salmonella spp., were not detected. After APC stage, total aerobic bacteria were significantly higher compared with before-APC stage. Among of general, pesticide-free and organic produce in tomato were no significant difference in microbial contamination. Coliforms of tomato in small vinyl package were significantly higher when compared to tomato in whole boxes package. There was no significant difference in bacteria count between unwashed tomato and washed tomato using tap water for one minute. The growth of E. coli O157:H7 and L. monocytogens in tomato extracts were decreased significantly as the concentration increased, and the microbial population was reached the lowest point during storage in 10% tomato extracts concentration for 72h at $5^{\circ}C$. However, the population of E. coli O157:H7 and L. monocytogens were gradually increased at 7.33~8.51 and 7.73~8.60 log CFU/ml during storage at $15{\sim}35^{\circ}C$ for 72h, respectively.

Effect of Plant Growth and Production of Tomato on the Water Content Control in Rockwool Culture (암면배지의 수분제어가 토마토의 생육 및 생산성에 미치는 영향)

  • Moon, Doo-Gyung;Kim, So-Hee;Cho, Myeng-Whan;Yu, In-Ho;Ryu, Hee-Ryong;Choi, Kyung-Hee;Kwon, Yong-Hee;Lee, So-Jin
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.20 no.2
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    • pp.183-189
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    • 2018
  • This study was carried out to investigate the effect of plant growth and production of tomato (Lycopersicon Esculentum Mill cv. Tefunis) according to the water content of non-recycled rockwool culture in high-rise tomato greenhouse. Daily irrigation amount was 3.8 times higher in the irrigation control by Integrated Solar Radiation (ISR) than in the Frequency Domain Reflectometry (FDR) sensor. Water content of ISR and FDR was 90-95 and 60-65%, respectively. Plant height and weight of tomato fruit was 1.2-1.9 times longer and 1.2-2.0 times heavier in the ISR than in the FDR sensor, respectively. No significantly differed to sugar content of tomato by treatments. Marketable fruits were the higher 1.3 times in the ISR compared with the FDR sensor. Cracking percentage in the ISR was also the higher 2.0 times compared with FDR sensor. Therefore, Irrigation control by ISR was appropriate to improve of plant growth and production of tomato with non-recycled rockwool culture in greenhouse during long-term cultivation.

Characteristics of Seedling and Rhizome Propagation in Epimedium koreanum NAKAI (삼지구엽초 실생 및 지하경번식 특성)

  • Noh, Joon-Hyun;Kim, Young-Jin;Choi, Kang-Jun;Kim, Se-Won;Kim, Sung-Kyeong;Kim, Jong-Hwa
    • Korean Journal of Medicinal Crop Science
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    • v.11 no.2
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    • pp.155-160
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    • 2003
  • This study was carried out to investigate propagation characteristics of seedling and rhizome in Epimedium koreanum NAKAI. Seed germination essentially needed after-ripening duration after harvesting for 250days and more by stratification. At $20^{\circ}C$ seed emergence days and root length were 8 and 0.46cm respectively. The above-ground part of E. koreanum grew until 60days after root cutting and the underground part of it grew after that time. The optimum amount of organic fertilizer was fermented cow-manure with husk 2,000kg/10a that showed $57.5cm^2$ in leaf area per plant, 6.2cm in new rhizome length, and 0.43% in icariin content, an index component of E. koreanum, while inorganic N-fertilizer made E. koreanum worse as it increased. In nutriculture extruded rice hull media was better for growth than perlite media at 1/2 NHRI solution.