• 제목/요약/키워드: root media

검색결과 503건 처리시간 0.034초

Effect of Root Media Formulation and Fertilizer Application on Potato Plug Seedling Growth and Field Performance

  • Kang, Bong-Kyoon;Kang, Young-Kil;Kang, Si-Yong;Park, Yang-Mun
    • 한국작물학회지
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    • 제46권2호
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    • pp.125-129
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    • 2001
  • Eight vermiculite-based root media prepared with addition of complete fertilizer (2 g/L; N-$P_2$$O_5$-$K_2$O, 10-10-14) for potatoes (Solanum tuberosum L.) and a commercial root medium were evaluated in 2000 to develop the root media suitable for potato plug seedling production. The eight media consisted of various ratios of vermiculite, perlite, peatmoss, and compost. In addition, four rates (0, 1, 2, or 4 g/L) of the complex fertilizer for potato were added to a root medium (70% vermiculite, 10% perlite, 10% peat moss, and 10% compost by volume) to determine the optimum addition rate of the complex fertilizer for plug seedlings. Compost addition to the media increased plant height, the number of leaves per plant, and top and root fresh weight of 15-day old plug seedlings. The seedlings raised in root media containing compost produced significantly higher total tuber yield. Addition of the complex fertilizer to root media enhanced seedling growth and increased the number of tubers per plant and tuber yields. The results suggest that root media containing 50% vermiculite, 0 to 20% peat moss, 10% perlite, 20 to 40% compost, and 2 g/L complex fertilizer for potato appear suitable for potato plug seedling production.

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Changes in Physico-chemical Properties of Moss Peat Based Root Media and Growth of Potted Chrysanthemums as Influenced by Blending Ratios of Root Media in a C-channel Mat Irrigation System

  • Kang, Seung-Won;Hong, Jong-Won;Lee, Gung-Pyo;Seo, Sang-Gyu;Pak, Chun-Ho
    • 원예과학기술지
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    • 제29권3호
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    • pp.201-210
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    • 2011
  • This experiment was conducted to investigate physical and chemical characteristics by volume fractions of root media using peatmoss, perlite, and vermiculite, along with effects on the growth of pot chrysanthemums (Dendranthema ${\times}$ grandiflorum 'Vemini') in a C-channel mat irrigation system. To evaluate the physico-chemical properties of 20 root media, the bulk density, particle density, total pore space, pore space, ash content, organic matter, pH, and electrical conductivity were measured and data were analyzed using principal component analysis (PCA). PCA scores revealed that physico-chemical properties changed by the blending of peatmoss, perlite, and vermiculite. The 20 root media were divided into three main groups by hierarchical cluster analysis. At the end of the experiment, the pH and EC of the root media were measured from media divided into four layers. The pH of root media without plants showed a strong linear relationship and the pH of root media with plants increased exponentially. The change of EC in the root medium was indicated as a hyperbolic curve. Plant growth characteristics according to growth in the 20 root media were analyzed by PCA. It was found that the mixing ratios of the root media affected plant growth characteristics. Therefore, mixing ratio is an important factor for pot-plant production in a subirrigation system.

인삼 Root의 생장 및 사포닌 생성에 미치는 배지와 생장조절물질의 영향 (Effects of Media and Growth Regulators on the Growth and Saponin Production of Ginseng Root)

  • 김정혜;장은정;오훈일
    • Journal of Ginseng Research
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    • 제25권3호
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    • pp.130-135
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    • 2001
  • 식물조직배양기술을 이용하여 사포닌 함량이 높은 인삼 root를 생산하고자, 인삼 root의 생장과 사포닌생산에 미치는 배지와 식물생장조절물질의 영향을 조사하였다. 인삼 root를 여러 종류의 배지에 배양하였을 때, 인삼 root의 생장과 사포닌 생산은 SH배지에서 가장 우수하였고, SH배지에 배양시, 접종후 약 10일후에 생체중량이 초기접종량의 2배가 되었다. 각 배지별로 배양한 인삼 root의 진세노사이드 패턴과 함량은 다소 차이가 있었는데, SH배지와 White배지에서 성장한 인삼 root의 총진세노사이드 함량이 가장 높았다. 생장조절물질에 있어서는 4.0mg/L NAA를 함유한 SH배지에서 성장한 인삼 root의 생장이 가장 우수하였고, 사포닌 함량은 0.5mg/L BAP 처리구에서 가장 높았다. 이러한 결과들은 인삼 root 배양에 의해 사포닌을 단기간에 생산할 수 있는 가능성을 제시하고 있다.

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Influence of pre-planting application of dolomite at various rates in coir-dust containing root media on the growth of red-leaf lettuce

  • Kim, Chang Hyeon;Choi, Jong Myung
    • 농업과학연구
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    • 제43권2호
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    • pp.176-185
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    • 2016
  • This research was conducted to evaluate various levels of dolomitic lime incorporated as pre-planting fertilizers on the growth of red-leaf lettuce. To achieve this, three root media were formulated by mixing coir dust with expanded rice hull (CD+ERH, 8:2, v/v), carbonized rice hull (CD+CRH, 6:4, v/v), and ground pine bark (CD+GRPB, 6:4, v/v). During formulation, equal amounts of essential nutrients, except dolomitic lime, were incorporated into all root media and the levels of dolomitic lime were varied from 0 to $7.5g\;L^{-1}$ at 1.5 g increments. Seedlings of red-leaf lettuces at the 3rd leaf stage were transplanted into each medium treatment. Crop growths were measured 5 weeks after transplant and soil solutions were collected every week and analyzed for pH, EC, and nutrient concentrations. The treatments showing the heaviest fresh and dry weights in CD+ERH, CD+CRH, and CD+GRPB were 4.5 g, 4.5 g, and $7.5g\;L^{-1}$ of dolomite, respectively. The pHs of three root media yielding the highest crop growths were in the ranges of 6.4 to 7.1. These ECs in CD+CRH medium were around $1.0dS\;m^{-1}$ higher than those of CD+ERH and CD+GRPB when application rates of dolomitic lime were equal. $K^+$ concentrations were higher than $Ca^{+2}$ and $Mg^{+2}$ concentrations until week 2 in three root media. But $Ca^{+2}$ and $Mg^{+2}$ concentrations were higher than $K^+$ concentrations after week 3 in all root media. The concentrations of $PO_4{^{-3}}$ in all root media got abruptly lower until week 2. These results indicate that appropriate levels of dolomitic lime, as pre-planting nutrient charge fertilizers in CD+ERH and CD+GRPB media, are 4.5 and $7.5g\;L^{-1}$, respectively.

벼뿌리의 갈변에 미치는 벼뿌리선충의 영향 (Influence of Rice-Root-Nematode(Hirschmanniella aryzae) on the Root Browning of Rice)

  • 이영배;박중수
    • 한국응용곤충학회지
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    • 제14권1호
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    • pp.35-36
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    • 1975
  • 벼뿌리선충의 벼뿌리갈변에 미치는 영향을 알아보기 위하여 벼가 자라는 배지조건을 달리하여 실내시험한 결과, 살균배지조건에서는 선충에 의하여 갈변도가 약간 높아졌으나 무살균조건에서는 선충의 존재여부에 관계없이 뿌리전체가 갈변되었는데 이것은 벼뿌리의갈변이 선충에 의한 다기보다 주로 그외의 토양미생물에 의하여 일어나는 것으로 보인다.

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비탈면 녹화에서 임목폐기물의 활용에 관한 연구 (A Study on the Use of Fresh Root-chips in Slope Revegetation Works)

  • 김남춘;이정호;이태옥;허영진
    • 한국환경복원기술학회지
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    • 제11권4호
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    • pp.119-128
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    • 2008
  • In this study, we attempted to seek out the ways to recycle fresh root-chips in the slope revegetation works by breaking tree root wastes occurring during the construction works, also to review the applicability of fresh root-chips as the soil media in slope revegetation works. For this purpose, we organized test units in order to investigate on-site applicability of fresh root-chips (broken chips). In order to examine the desirable ration of combining fresh root-chips with the hydroseeding soil media on the cutting slopes, we organized test units depending on the amount of combination. The following is the main experimental results. 1. At first, we analyzed properties of hrdro-seeding soil media and soil of the experimental sites. The overall results demonstrate that all the test units show proper range for vegetation. 2. We believe that the physical properties of soils in the earlier phase of restoration works on the sloped sites are not greatly affected by the fact whether broken chips exist or not. However, as time elapses, broken chips needs to be investigated further on what kind of impact they have on the soil condition. 3. More species are found in the test unit combining broken chips and we believe that it will contribute to blossoming of green plants and ecological succession of neighboring plants. 4. We performed experiment on possibility for fresh root-chips as substitutes for the hydro-seeding soil-media. In the test unit that combines fresh root-chips, its mixture ratio tends to exceed that of the test unit that does not combine fresh root-chips by 5 %. In case of the Thick-Layer-Soil-Media Hydroseeding works, the mixture ratio of the test unit that combines fresh root-chips after 16 weeks exceeds that of the test unit that does not combine fresh root-chips by 75%. 5. From the result of our experiment, it is obvious that the ratio of mixture and the number of emerging species are higher for the test unit combining fresh root-chips than the test unit that does not combine them. In other words, we can replace the hydro-seeding-soil-media with some Fresh root-chips without affecting the physical property of soil.

다양한 규격의 포트에서 코이어더스트를 포함한 혼합상토의 충전밀도 차이에 의해 유발된 물리성 변화 (Changes in Soil Physical Properties in Various Sizes of Container as Influenced by Packing Amount of Coir Dust Containing Root Media)

  • 박은영;최종명
    • 원예과학기술지
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    • 제31권6호
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    • pp.720-725
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    • 2013
  • 수축성이 강한 코이어더스트가 주요 구성물질로 조제된 혼합상토는 충전량에 따라 용기내의 밀도가 달라지고 결과적으로 공극률(TP), 기상률(AFP) 및 용기용수량(CC)의 상대적인 비율이 변화된다. 따라서 충전량 차이에 따라 변화된 상토의 물리성 변화를 구명하여 작물 재배를 위한 기초자료로 제시하고자 본 연구를 수행하였다. 연구 목적을 달성하기 위해 코이어더스트 + 팽연왕겨(8:2, v/v; coir dust + expanded rice hull, CD + ERH로 지칭), 코이어더스트 + 훈탄(6:4; coir dust + carbonized rice hull, CD + CRH), 그리고 코이어더스트 + 분쇄된 수피(8:2; coir dusts + ground and raw pine bark, CD + GRPB)의 세 종류 상토를 조제하였다. 이 후 직경이 6.0, 7.5, 8.5, 10.5 및 12.5cm의 포트에 최적 가비중을 기초로 90, 100, 110, 120 및 130%가 되도록 상토 충전량을 조절한 후 TP, AFP 및 CC 변화를 측정하였다. 모든 규격의 포트에서 상토 충전량이 많아질수록 TP가 감소하였지만 CD + GRPB 상토보다 CD + ERH 또는 CD + CRH 상토의 감소 정도가 컸다. 상토 충전량이 많아질 경우 CC도 감소하였지만, 동일한 충전 비율에서 포트의 크기가 커질수록 CC의 감소한 정도가 컸다. 상토 충전량이 많아질수록 AFP도 뚜렷하게 감소하였다. 그러나 포트의 직경이 7.5cm보다 적을 때에는 동일한 충전 비율에서 CD + CRH 상토의 AFP가 가장 높았고, 포트의 크기가 8.5cm 이상으로 커질 경우 CD + ERH 상토의 AFP가 가장 높았다. 본 연구에서 상토 충전량 증가는 CC보다 AFP에 더 심한 영향을 미쳤으며 근권부의 가스 교환이 작물 생육에 큰 영향을 미침을 고려할 때 AFP의 감소를 방지할 수 있도록 충전량을 조절해야 한다고 판단하였다. 본 연구 결과는 상토를 이용한 용기재배에서 충전량 차이에 따른 물리성 변화를 예측하기 위한 자료로 활용될 수 있을 것이다.

용기 크기와 충전밀도 차이에 따른 피트모스 혼합상토의 물리성 변화 (Changes in Soil Physical Properties of Peatmoss Containing Root Media as Influenced by Container Size and Packing Density)

  • 박은영;최종명;이동훈
    • 원예과학기술지
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    • 제31권5호
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    • pp.558-564
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    • 2013
  • 수축성이 강한 원예용 상토를 용기에 충전할 때 충전량 변화에 따른 물리성 변화를 구명하기 위해서 본 연구를 수행하였다. 피트모스 + 팽연왕겨(8:2, v/v; PM + ERH), 피트모스 + 훈탄(6:4; PM + CRH) 및 피트모스 + 분쇄부숙수피(8:2; PM + GRPB)의 세 종류 상토를 혼합 조제하였다. 작물 재배를 위한 최적 가비중을 기초로 직경이 6.0, 7.5, 8.5, 10.5 및 12.5cm의 용기에 90, 100, 110, 120 및 130%가 되도록 상토 충전량을 조절한 후 공극률, 용기용수량 및 기상률의 변화를 측정하였다. 모든 크기의 화분에 세 종류 혼합상토의 충전량이 많아질수록 뚜렷하게 공극률이 감소하였다. 그러나 용기의 크기가 작아질수록 세 종류 상토의 공극률이 유사한 경향을 보이며 감소하고 각 상토별 차이도 크지 않았지만 용기의 크기가 커질수록 공극률 감소의 상토별 차이가 커지는 경향이었다. 상토 충전량이 많아질수록 용기용수량도 뚜렷하게 낮아졌다. 훈탄이 포함된 PM + CRH 상토는 직경 8.5cm 이하의 작은 용기에서 세 종류 상토중 용기용수량이 가장 낮았지만 직경 10.5cm 이상으로 용기가 커질수록 용기용수량이 가장 높았으며 화분의 크기 및 상토종류에 따라 다른 경향을 보이며 물리성이 변함을 알 수 있었다. 모든 규격의 화분에서 상토 충전량 증가는 기상률이 뚜렷하게 감소하는 원인이 되었다. 그러나 PM + GRPB가 혼합된 상토가 팽연왕겨나 훈탄이 포함된 상토 보다 모든 충전밀도에서 기상률이 2배 이상 높았다. 또한 상토 충전량이 많아져도 큰 화분에서는 기상률의 감소한 정도가 크지 않았지만 액상률의 감소한 정도가 컸다. 이상의 연구 결과는 혼합상토를 이용한 작물 재배에서 상토의 충전량이 증가할 경우 공극률, 기상률 및 액상률이 감소하지만 이는 용기의 크기 및 상토 종류에 따라 감소 정도가 달라질 수 있음을 나타낸다. 또한 본 연구 결과는 상토를 이용한 용기재배에서 충전량 차이에 따른 물리성 변화를 예측하기 위한 자료로 활용될 수 있을 것이다.

Production of Tropane Alkaloids by Two-stage Culture of Scopolia parviflora Nakai Adventitious Root

  • Kim, Won-Jung;Jung, Hee-Young;Min, Ji-Yun;Chung, Young-Gwan;Lee, Cheol-Ho;Choi, Myung-Suk
    • 한국약용작물학회지
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    • 제12권5호
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    • pp.372-377
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    • 2004
  • Scopolia parviflora Nakai, a rare and endangered species, is the sole plant producing tropane alkaloids (TA) among the Korean native species. In order to enhance TA productivity the SP72 root line was selected by screening 100 of root line, and the optimal culture media for root growth and TA production were investigated with the SP72 roots. Based on the several media, SH and 2B5 medium were determined as growth medium and White and NN medium as production medium. Among the four combinations of two-stage culture, 2BN (2B5 as growth medium plus NN as production medium) showed more enhanced root growth and TA production as compared with production media of White and NN medium and growth media of SH and 2B5 medium, respectively. However, bubble column bioreactor (BCB) cultures applying two-stage culture did not reveal the effective results despite of the each successful operation of two-stage culture in conical flasks and BCB cultures.

소나무속 식물의 뿌리생장에 대한 알루미늄 내성 (Aluminum Tolerance in Pine Root Growth)

  • Ryu, Hoon;Joon-Ho Kim
    • The Korean Journal of Ecology
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    • 제19권1호
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    • pp.36-46
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    • 1996
  • Variation of Al tolerance in Pinus densiflora, P. rigida and P. thunbergii was investigated in a solution culture. Root length decreased as Al concentration increased, and decreased more in dilute culture media than in dense one. Aluminum tolerance based on relative root length was in the order of P. rigida > P. densiflora > P. thunbergii. Al content in tissue increased as Al concentration of the media increased, but the reverse was true for content of Ca and Mg. Al tolerance for root length showed intraspecific variation, even under the same Al concentration in the media.

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