• Title/Summary/Keyword: 양액재배

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Effect of Substrate on the Production of Korean Ginseng(Panax ginseng C.A. Meyer) in Nutrient Culture (한국인삼 양액재배시 배지의 영향)

  • Dong Sik Yang;Gung Pyo Lee;Park, Kuen Woo
    • Journal of Bio-Environment Control
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    • v.11 no.4
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    • pp.199-204
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    • 2002
  • To overcome a decrease of Korean ginseng production caused by successive cropping, we have tried to develop a nutrient culture system for Korean ginseng production. For determining the optimal substrate, mixture of sand and TKS-2 (S+T), peatmoss (P), reused rockwool (RR), and granular rockwool (GR) were investigated. The overall physico-chemical properties of RR fell into the reported optimal range for the ginseng cultivation. However, bulk density of S+T was a little higher than that of soil in Korean ginseng fields. The top fresh weight of the ginseng was high in RR and S+T substrates. The root fresh and dry weights in the RR were remarkably greater than that in the conventional soil (CS) of Korean ginseng fields. In terms of ginseng quality, the vitamin C content of ginseng root in nutrient culture was higher than that in CS. However, the contents of crude saponin and total ginsenosides in ginseng between in the nutrient culture and in the soil culture did not show any significant differences.

Study Growth Environmental Monitoring and Controlling Platform for Hydroponic (양액재배를 위한 생육환경 모니터링 및 제어 플랫폼에 관한 연구)

  • Yeon, In-won;Lee, Won-cheol
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.41 no.9
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    • pp.1132-1140
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    • 2016
  • According to global trend, despite the overall scale of agricultural industry has been downsized, agriculture accommodating cutting-edge ICT technologies has been proliferated, and various timely-issued relevant researches have been on progress to deploy the future food cultivation. In this paper, we propose an effective nutrient management system with web-based monitoring with functionality of controlling temperature, humidity, pH (hydrogen ion), EC (Electric Conductivity), LED and cooling fan to maintain the hydroponic nurturing environment being optimal. In this paper, in order the arduino hardware and java software are employed to control the nurturing environment automatically in optimal fashion. In proposed system, due to the usage of WiFi router with the socket communication and DB-assisted Web server with proper interfaces, it allows to facilitate the management to keep monitoring and controling overall hydroponic nurturing environment. Since the proposed Web-based management system provides the superior reliability, the short nurturing period and the robustness to the pest by controlling LED emitting color rather than conventional system, so it can be applied and appropriate for in-house vegetable factory overcoming limitation of time and location.

A Study of Sap Analysis for the Establishment of Nutrient Diagnosis Method (온실멜론의 양액재배에 있어서 영양진단법 확립을 위한 즙액분석)

  • 장홍기;정순주
    • Journal of Bio-Environment Control
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    • v.6 no.4
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    • pp.310-316
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    • 1997
  • This experiments comparisons were conducted to establish the effective sap analytical method including quantitative analysis of nitrate and phosphorous, sap extraction method, extraction rate, macerating time and sampling position. Earl's Favorite muskmelon was sown on February 11th, 1993 and transplanted to rockwool slab when three to fourth true leaf appeared. Non-circulating system was employed in this experiment. Sap testing using a sample provides an immediate analysis of nutritional status of the crop and potential problems can be recognized and corrective measures taken. Some methods were recommended UV-spectroscopy for the analysis of nitrate nitrogen, Vanad molybdenium acid method for phosphorous. Optimal extraction rate of sample to water was determined as one to four and the best result observed at 60seconds in macerating duration. Further trials would be requested about sampling time due to the difference according to the sampling time. Given sampling position was favorable for the sap analysis.

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Comparisons of Growth and Fruit Quality of Citrullus lanatus cv. Mudeungsan and Citrullus vulgaris cv. Dalgona Grown in Fertigation and Soilless Culture (무등산수박과 달고나수박의 관비재배와 양액재배에 있어서 생육 및 과실품질의 비교)

  • 이범선;정순주;박순기
    • Journal of Bio-Environment Control
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    • v.8 no.1
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    • pp.19-29
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    • 1999
  • This experiment was conducted to compare with the growth and fruit quality of Citrullus lanatus cv. Mudeungsan and Citrullus vulgaris cv. Dalgona grown in fertigation and soilless culture. Seeds were sown on April 16 and transplanted on April 24, 1998. Cultural systems used in fertigation and soilless culture beds using mixed substrate, coir dust (50%) and perlite (50%). In the plot of fertigation system, the number of leaves of cv. Dalgona were increased more than that of cv Mudeungsan, but leaf area shown inversed trend. Plant growth shown greater in soilless culture than those of fertigation culture. In regardless of cultural systems, soluble solid content in fruit was higher in the cv. Dalgona than that of cv. Mudeungsan, but fruit fresh weight was greater in cv. Mudeungsan compare to the cv Dalgona. Nitrate content in petiole sap of watermelon in regardless of cultivars and cultural systems was 11.4∼13.4mg/gFW on 15 days after transplanting, and then increased to 17.1∼20.6mg/gFW on the fruit growth stage. Phosphorous content was 3.7∼5.7mg/gFW in the early growth stage while decreased to 0.6∼1.1mg/gFW from maturing stage to harvesting stage. Potassium content was increased to 5.8∼6.6mg/gFW in the early growth stage while decreased to 4.0∼4.8mg/gFW from pollination stage to harvesting stage. Calcium content in spa petiole of watermelon was higher in soilless culture as 3.4∼4.1mg/gFW than 2.5∼3.5mg/gFW of fertigation culture, but calcium content in fertigation culture during maturing stage was higher than that of soilless culture. The tendency of magnesium uptake was higher in fertigation culture than that of soilless culture, and was similarly absorbed in the range of 0.9∼1.3mg/gFW in regardless of cultural method after pollination. It was demonstrated that cv. Mudeungsan can be adapted to soilless culture and improved the fruit quality. Consequently, hydroponic possibility for year round culture in the greenhouse was recognized.

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Effects of Concentration of Nutrient Solution and Irrigation Frequency on Growth and Flower Quality of Cut Chrysanthemum Grown Hydroponically in Perlite (국화의 펄라이트 양액재배시 양액농도 및 관주주기가 생육과 절화 품질에 미치는 영향)

  • Ji, Eun Young;Oh, Wook;Kim, Sun Hwa;Kim, Ki Sun
    • Horticultural Science & Technology
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    • v.16 no.1
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    • pp.37-39
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    • 1998
  • This study was carried out to investigate the effects of nutrient solution concentration, irrigation frequency on growth, flowering, and cut flower longevity of Dendranthema grandiflorum (Ramat.) Kitamura 'Shuhouno-chikara' hydroponically grown in perlite media. Not only stem length but also mineral contents of each plant organ in nutrient solution culture were much higher than those in soil culture. 1/2S of nutrient solution was good at early stage, but 1S of nutrient solution was better as chrysanthemum growth progressed. Among different concentrations of nutrient solution, mineral contents of each plant part showed no significant difference. 1S treatment of nutrient solution increased the vase life by 3 days than 2S treatment. The growth and mineral contents of each plant organ were great in plants irrigated 8 times a day, because of high moisture contents of medium and high water availability, followed by more frequent nutrient replenishment near roots. There was no correlation between nutrient solution concentration and vase life of cut flower grown in nutrient solution culture. Cut flowers irrigated twice per day had the longer vase life than other treatments (4, 8 times).

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Development of Recirculating Wick Hydroponic Techniques for Safe Seed Tuber Multiplication of Potatoe (심지 양액재배법에 의한 상위급 씨감자의 안정적 대량생산)

  • Kang Bong Kyoon;Kim Chan Woo
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.49 no.6
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    • pp.447-451
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    • 2004
  • This study was conducted to establish the proper techniques of the recirculating wick hydroponics for safe seed tuber proliferation of potatoes (Solanum tuberosum L. CV. Dejima). To achieve these, several intact tubers (5, 10 and 20 g) and cut seed-pieces (two or four) were treated in wick hydroponic system beds. A polystyrene box (31cm in width, 20cm in height, 51cm in length, and $0.031m^3$ in volume) was placed on a styrofoam hox. Eight wicks $(width\;1.5cm\;{\times}\;length\;40cm) $ were put into each polystyrene hox and the boxes were filled with perlite + peatmoss (1 : 2, v/v) medium. Top fresh weight per plant increased with increasing the tuber size from 10 to 30g/tuber. As the tuber size increases from 10 to 30 g/tuher in case of uncut tuber, the marketable tuber (>5g) production per plant increased from 83.8 to 141.8 g/plant and the marketable tuber (>5g) production per plant of cut tuber was slightly higher than that of uncut treatment. Total tuber yield ranged from 4.16 to $6.56kg/m^2$ and the percentage of seed tubers was greater than $97\%$ for all treatments. These results indicate that seed tuber should be cut to produce large tuber $(\geq10g)$ in the recirculating wick hydroponic system.

Evapotranspirations of Lettuce and Cucumber by Cropping Systems in Greenhouse (시설재배 상추 및 오이의 재배방식별 증발산량)

  • 남상운;이남호;전우정;황한철;홍성구;허연정
    • Journal of Bio-Environment Control
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    • v.6 no.3
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    • pp.168-175
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    • 1997
  • In greenhouse, data on evapotranspiration or water consumption is important for the rational water management, irrigation planning, thermal environment analysis, and watering automation. But little investigations have been attempted to make clear the characteristics of water consumption in greenhouse. In this paper, evapotransplrations of lettuce and cucumber by cropping systems were investigated. And the correlations among evapotranspiration, pan evaporation, solar radiation, mean air temperature, and minimum relative humidity were analyzed. Experimental cropping systems of lettuce were soil culture and NFT system. Those of cucumber were soil culture, perlite culture, and rockwool culture. Total water consumption of lettuce was 2.62$\ell$/plant in soil culture and 1.71$\ell$/plant in NFT system. That of cucumber was 45.22$\ell$/plant in soil culture, 27.45$\ell$/plant in rockwool culture and 29.06$\ell$/plant in perlite culture. Therefore total water consumption of soil culture showed higher than soilless culture.

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Analysis of Well Water Quality for Hydroponic Farms in Chollabuk-do Area (전북지역 양액재배 농가의 원수 수질 분석)

  • 배종향;이용범
    • Journal of Bio-Environment Control
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    • v.5 no.2
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    • pp.131-137
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    • 1996
  • This analysis has been conducted to get some basic data of the composition of culture solution mostly in inorganic ions, and water quality in hydroponic farms in Chollabuk - do. pH range was shown from 6.00 to 7.65 and the average was 6.58. EC range was shown from 0.01 to 0.94 mS/cm and the average was 0.28 mS/cm. Na concentration ranged from 4.71 to 145.44 ppm and Cl concentration ranged from 0 to 171.80 ppm were shown and their average were 24.24 ppm and 26.33 ppm, respectively. Na and Cl concentrations were higher as 7.7%, compared to those of other farms, which could cause the salt accumulation in the substrate mats. K, Ca and Mg concentrations were ranged from 0.93 to 17.38 ppm, 2.29 to 34.30 ppm and 0.70 to 18.61 ppm, respectively. Average concentrations were 3.06 ppm in K, 13.00 ppm in Ca and 4.91 ppm in Mg. 50, and PO$_4$ concentration ranged from 0.63 to 59.79 ppm and 0 to 4.28 ppm were shown and their average were 18.11 and 0.51 ppm. Cu concentration was ranged from 0 to 0.32 ppm and 0 to 6.22 ppm in Zn concentration. Their average were 0.02 ppm and 0.52ppm, respectively.

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Development of a Nutriculture System for Fruit Vegetables Using Perlite and Its Mixtures with Other Substrates II. Effects of Substrates on the Growth and Fruit Quality of Hydroponically Grown Tomato (Perlite 단용 및 혼용처리를 이용한 과채류 양액재배 기술 개발 II. 배지의 종류가 양액재배 토마토의 생장과 과실품질에 미치는 영향)

  • 정순주;서범석;이범선;이정현
    • Journal of Bio-Environment Control
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    • v.5 no.1
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    • pp.7-14
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    • 1996
  • This experiment was carried out to investigate the growth and yield responses of hydroponically grown tomato as affected by the different substrates using perlite and mixtures with perlite. Substrates used in this experiment were perlite (fine and coarse granule), peatmoss, rice hull and carbonized rice hull. The results obtained were as follows ; The best results in terms of total fruit yield and average fruit weight obtained in the single treatment of perlite, followed by perlite mixture with rice hull and carbonized rice hull. Leaf area was also higher in the plots of perlite mixture and optimum mixing ratio of perlite, peatmoss and carbonized rice hull was determined as 5:3:2 by volume. The more the rice hull was added to the mixed substrates, the less in fruit production was observed. However, adding perlite to other substrates brought higher fruit yield. Single treatment of rice hull showed the lowest fruit yield but enhanced in soluble solids contents over 6.0 $^{\circ}$Brix at each cluster.

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Effects of Concentrated Pig Slurry Using Membrane Filter on the Growth and Yield of Tomato in Nutriculture (막분리 돈분뇨 농축액비를 이용한 양액재배가 토마토의 생육과 수량에 미치는 영향)

  • Ryoo, Jong-Won;Seo, Woon-Kab
    • Journal of Animal Environmental Science
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    • v.14 no.2
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    • pp.119-128
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    • 2008
  • This experiment was conducted to investigate the effects of concentrated pig slurry using membrane filter on growth of tomato in nutriculture. Pig slurry was filtered by ultra filtration and concentrated by reverse osmosis process. Filtration of pig slurry was necessary to prevent the hose clogging in nutriculture. The concentrated pig slurry (CS) and nutrient solution (NS) were mixed by six different mixing ratios of 0:100, 20:80, 40:60, 60:40%, 80: 20 and 100%:0% based on nitrogen content. The chemical nutrient solution was the solution of National Horticulture Research Station for the growth of tomato. The concentration of nutrient solution was adjusted a range of $1.6{\sim}2.0mS/cm$ in EC. The plant height of tomato treated with CS 20+NS 80% was similar with NS 100% control plot. Plant height was highest in the plot of CS 20+NS 80%. The treatment of 100% concentrated pig slurry was lowest in the gowth characteristics of tomato. Number of cluster was very lower in 100% concentrated pig slurry compared with plot of chemical nutrient solution. In the beginning of growth stage, SPAD reading value was reduced in plot treated with CS 100%, but CS 20+NS 80% plot was higher compared to 100% concentrated pig slurry. SPAD value of tomato leaves was decreased as the amount of CS was increased. The SPAD value also in treatment of concentrated pig slurry was lower in the middle growth stage compared to control plot. The dry weight of stem and leaf were 107.4, 104.2g in plot of NS 100% and CS 20%+NS 80%, respectively. The fruit number and weight were decreased at high application plots of concentrated pig slurry, The fruit setting of tomato showed lowest in the plot treated with 100% concentrated pig slurry, and the growth of tomato severely decreased after application of 100% CS treatment. In conclusion, the growth characteristics such as plant height and fruit weight of tomato were not significantly different between the plots treated with mixture of 20% CS +80%NS and 100% nutrient solution treatment. In conclusion, the mixture solution of 20% of concentrated pig slurry and 80% of nutrient solution could be used as a nutrition solution of tomato nuticulture.

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