• Title/Summary/Keyword: 포트재배

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Effect of Controlled Water Level for Irrigation Constraint on Growth of the Rice Plant (수위조절(水位調節)에 의(依)한 관개수(灌漑水)의 제한공급(制限供給)이 포트재배수도(栽培水滔)의 생육(生育)에 미치는 영향(影響))

  • Kim, Jai-Joung;Yuk, Chang-Soo;Jung, Kwang-Yong
    • Korean Journal of Soil Science and Fertilizer
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    • v.23 no.4
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    • pp.268-274
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    • 1990
  • In order to understand the effect of irrigation constraint on the growth and yield of the rice plant. two rice cultivars. Samnambyeo and Chucheongbyeo. were cultured in the pot controlled with different water levels: + 2 cm-submergence, and -17cm, -37cm, -57cm, -77cm, -97cm, -120cm, and -145cm depth from soil surface. 1. Among differently irrigated conditions, submerged condition was the best in growth and yield of both Samnambyeo and Chucheongbyeo. Yield and growth of rice decreased linearly with lowering the water level in sequence. 2. Samnambyeo appeared to be more drought resistant cultivar than Chucheongbyeo. It was regarded that physiologically critical water level on rice yield was about 70cm depth in Samnambyeo and 50cm depth in Chucheongbyeo. 3. The earliest heading date of the rice plant was from submergence condition and the head ing date was linearly delayed with lowering water level in sequence. The heading date of Samnambyeo was about 10days earlier than that of Chucheongbyeo at the same water level.

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Several Factors Affecting Cultivation of Ground-cover Plants on Silene repens Patrin (오랑캐장구채(Silene repens Patrin)의 지피식물용 재배생산에 영향을 미치는 몇가지 요인)

  • Jeong, Eun-ah;Jeon, Ki-beom;Choi, Hye-min;Moon, Sang-a;Yeon, Su Ho;Lee, Seong Yeon;Kwon, Soon-tae;Lee, Cheol Hee
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2018.10a
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    • pp.57-57
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    • 2018
  • 관상용, 식용 및 약용으로도 이용되는 석죽목 석죽과의 여러해살이풀인 오랑캐장구채는 국내에서는 중부 이북지방의 유용 자생식물로 조경산업에의 이용가치가 크나, 이용성 증대 등을 위한 재배기술은 미흡하다. 지피식물용 재배조건의 구축을 위하여 2017년 7월 31일부터 10월 9일까지 약 10주간 본 연구를 수행하였다. 실험재료로 종자에서 육묘한 유묘를 사용하였으며, 유묘의 소질, 이식조건 및 재배관리에 대한 생육의 영향을 조사하였다. 유묘의 소질로는 162구 트레이에서 cell당 4립씩 파종하여 육묘된 유묘가 초장 및 건물중이 높았고, 특히 4립 파종구는 마디수를 제외한 생육량이 다른 처리구에 비해 유의적으로 큰 차이가 있었다. 경제성을 고려할 때, 상토는 혼합비료(N-P-K) $300-200-200mg{\cdot}L^{-1}$가 첨가된 마사토:피트모스(3:1) 혼용토를 충진한 처리구가 효과적이었다. 또한, 코트비료의 기비처리는 포트당 20알 처리구에서 지하부 생체중이 무거웠으나, 엽면적 등 다른 생육량을 고려할 때 기비하지 않은 처리가 효과적이다. 재배관리에 있어서 차광처리는 습기 등의 환경에 약한 유묘의 특성상 차광하지 않고 배치하는 것이 모든 생육량이 높았다. 이식 후에는 추비처리를 하는 것이 효과적이며, 추비농도는 엽수 등을 고려할 때 $500mg{\cdot}L^{-1}$ hyponex이 적합하였다.

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Comparison of Growth According to the Seedling Methods and Freshness to Storage Ones on Lettuce (결구상추 육묘방법에 따른 생육 및 저장방법에 의한 선도 비교)

  • Lee, Jung-Soo
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.27 no.3
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    • pp.181-186
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    • 2021
  • The research was aimed to improve pre-harvest methods to maintain marketability in postharvest coniferous lettuce. Non-woven pots or plug plates were used to generate seedlings. No difference was found in growth characteristics of lettuce grown in non-woven pots vs plug plates. Since, seedling method with non-woven pots was convenient, lettuce harvested from non-woven pots used for water dipping treatment. The quality parameters, such as fresh weight loss, SPAD value, and appearance of lettuce were investigated after harvest. The lettuce with dipping treatment inside the plastic box container showed lower weight loss, higher SPAD value and better appearance compared to those exposed to the control (non-packaging) during the storage at 2℃. The treated plant showed higher SPAD and hue angle values 21.9 and 113.8°, respectively, compared to that of 18.8 and 108.3°, in non-treated plants. Therefore, it seems that the water dipping treatment is effective for storage method to maintain freshness of the lettuce. We showed the non-woven pot growing as a convenient seedling method for packaging treatment. Further studies will be continued to improve freshness postharvest of other horticultural crops.

Several Treatments of Veronica rotunda Nakai for Pot Cultivation (분화 재배를 위한 둥근산꼬리풀의 몇 가지 처리)

  • Yeon, Soo Ho;Lee, Sang In;Lee, Seung Yeon;Lee, Cheol Hee
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2019.04a
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    • pp.89-89
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    • 2019
  • 둥근산꼬리풀(Veronica rotunda Nakai)은 다년생 초본으로 높은산 정상에서 자라며, 초장은 10~20 cm, 잎의 길이는 2~4 cm 정도이다. 또한, 기부의 잎은 엽병이 불분명하고, 줄기에는 털이 없는 것으로 알려져 있다. 관상소재로 이용되고 있으나, 식물정보는 매우 부족하며, 활용하기 위해서는 재배 연구와 식물에 대한 정보 수집이 필요하다. 이에 본 연구는 둥근산꼬리풀의 관상용 재배 시 적정 차광, 기비, 추비, 왜화제 및 적심 등의 처리 정도를 알아보고자 수행하였다. 재배방법의 확립을 위하여 선행연구에서 육묘한 유묘(2018년 5월 15일에 파종하여 생산)를 7월 16일에 정식하여 10월 15일까지 약 14주 동안 재배하였다. 공통조건은 플라스틱 화분 10호(이색포트, $9{\times}9cm$)에 원예상토를 충진하고, 200구 트레이에 셀 당 4립씩 파종하여 생산된 1셀을 정식하였다. 차광 정도 실험은 0, 55, 75% 차광막을 이용하였으며, 기비는 싱싱코트를 0, 10, 20알 처리하였고, 추비는 hyponex (N:P:K, 4:6:6)를 0, 1000, $2000mg{\cdot}L-1$의 농도로 엽면시비 하였다. 또한, 관상효과 증가를 위해 왜화제는 diniconazole, daminozide를 농도별(각 0, 1000, $2000mg{\cdot}L-1$)로 처리하였고, 적심은 4주차에 1회 처리 유무의 효과를 비교하였다. 연구의 결과, 둥근산꼬리풀에 기비 10알 처리는 생육에 유의적인 차이는 보이지 않았으나, 20알 처리는 무처리와 10알 처리에 비해 절간장, 경직경이 증가하는 결과가 나타났다. 추비는 절간장을 증가시켰으나, 측지수와 마디수는 유의적으로 감소시켰다. 차광처리별로는 55, 75% 차광 모두 무차광에 비해 측지수, 마디수, 엽수 및 개화율을 크게 감소시키는 결과를 보여, 둥근산꼬리풀는 광이 충분한 곳에서 재배하는 것이 적합한 것으로 생각된다. 왜화제의 처리는 종류와 농도에 관계없이 둥근산꼬리풀은 측지수, 마디수, 엽수를 감소시키는 결과를 보였다. 또한 초장이 짧아지고 경직경은 두꺼워졌으나, 유의적인 차이는 없었다. 종류별로는 daminozide $2000mg{\cdot}L-1$ 처리는 무처리에 비해 개화율이 증가하여, 둥근산꼬리풀의 분화용 재배시 daminozide $2000mg{\cdot}L-1$를 처리하는 것이 효과적이다. 적심처리는 무처리에 비해 전반적인 생육 및 개화를 억제하는 결과가 나타났다. 결론적으로 둥근산꼬리풀의 분화용 재배시 광량이 충분한 곳에서 재배하고, 기비와 추비는 절간장을 증가시키며, 측지수, 마디수, 엽수에 큰 차이가 없거나 감소하는 결과를 보여 관상용 재배에 적합하지 않은 것으로 판단된다. 추가적으로 daminozide $2000mg{\cdot}L-1$를 처리하며, 적심처리를 하지 않는 것이 좋을 것으로 생각된다.

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

  • Park, Eun Young;Choi, Jong Myung
    • Horticultural Science & Technology
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    • v.31 no.6
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    • pp.720-725
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    • 2013
  • When highly shrinkable materials such as coir dust are major component of root media, the degrees of compaction during container filling of root media severely influences the physical properties of root media. It results in the changes in total porosity (TP), container capacity (CC) and air-filled porosity (AFP). This research was conducted to secure the fundamental information in changes of soil physical properties as influenced by the compaction of root media during container filling. To achieve this, three root media were formulated by blending coir dust (CD) with expanded rice hull (CD + ERH, 8:2, v/v), carbonized rice hull (CD + CRH, 6:4) and ground and raw pine bark (CD + GRPB, 8:2). Based on the optimum bulk density, the amount of root media filled into 6.0, 7.5, 8.5, 10.5 and 12.5 cm were adjusted to 90, 100, 110, 120 and 130% based on the weight of root media. Then the changes in TP, CC, and AFP were measured. Elevation of the packing amount of root media in all sizes of pot resulted in the decrease of TP. But the decrease was more severe in CD + ERH and CD + CRH than those in CD + GRPB. The CC also decreased gradually as the packing amounts were elevated in three root media, but the decreases were severe as the container sizes became larger. The AFP decreased drastically by the elevation of the packing amount of root media in all sizes of pot. The AFP was the highest in CD + CRH medium when pot sizes were smaller than 7 cm, but that was the highest in CD + ERH when the pot sizes were larger than 8.5 cm among the 3 root media tested. In this research, the elevation of packing amount of three root media influenced more severely the AFP rather than CC. This result indicates that the packing amount should be controlled to maintain appropriate level of AFP because AFP rather than CC influence severely crop growth. The results obtained through this study can be used to predict the changes in physical properties of root media as influenced by packing amount in various sizes of pots.

Effect of Soil Texture and NPK Fertilizers Application Level on Growth and Yield of Ostericum koreanum (토성과 시비량에 따른 강활(羌活)의 생육과 수량변화)

  • Hur, Bong-Koo;Kim, Zhoo-Hyeon;Oh, O-Jin
    • Journal of agriculture & life science
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    • v.44 no.2
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    • pp.1-6
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    • 2010
  • This study was carried out to investigate the effects of the various soil textures and NPK fertilizer application rates on growth and yield of Ostericum koreanum by pot experiment. Mean temperatures during cropping seasons of May, June, August and October were higher than those of normal year, but also the values were equal or lower for the other period. The growth and yield of Ostericum koreanum in the 1.5 fertilization rates became higher as the fertilizer rates increased by different soil textures. The content of soil organic matter and available phosphorus were high by application of high fertilization levels, while another contents did not show any significant differece. The yield of Ostericum koreanum was high in the loam soil by 278kg/10a. Those for clay soil was lower. Therefore, these results suggested that optimum soil texture for cultivation of this plant could be loam soil.

Genetic Stability Analysis of in vitro Regenerated Wolly Grass (Imperata cylindrica 'Rubra') Based on Inter-Simple Sequence Repeats (ISSR) Markers (ISSR 표지에 의한 기내재생 홍띠(Imperata cylindrica 'Rubra')의 유전적 안정성 분석)

  • Ye-Jin Lee;In-jin Kang;Chang-Hyu Bae
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2020.12a
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    • pp.54-54
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    • 2020
  • 지구온난화에 따라 농업부문 신재생에너지의 중요성이 증대되고 있으며, 화본과 식물은 바이오에너지작물의 중요한 소재를 제공하고 있다. 화본과 식물의 기내대량증식연구의 일환으로 홍띠식물의 기내 재생 식물체의 유전적 안정성에 대한 기초자료를 제공할 목적으로 기내배양으로 재분화시킨 홍띠(Imperata cylindrica 'Rubra') 재분화 식물체 중 녹색체 재생식물체를 대상으로 ISSR 표지를 사용하여 유전적 안정성을 조사하였다. 재분화식물체는 MS (Murashige and Skoog, 1962)배지에 생장조절제를 첨가한 배지에서 배양하였다. 생장점 부위를 적출하여 캘러스를 유도하고(0.1 mg/L 2,4-D와 2 mg/L BA), 캘러스 증식(0.1 mg/L 2,4-D와 0.05 mg/L BA), 신초 재분화( 0.01 mg/L NAA와 2 mg/L BA) 후 MS배지에서 식물체를 양성하고 순화시켰다. 배양은 26±2℃, 25 µmol/m2/s, 14h/10h (day/night) 광조건 하에서 실시하였다. 재분화식물체는 홍띠 및 녹색 재분화식물체 2 종류로 나타났는데, 이는 생장점에서는 홍띠가 분화되었음에도 불구하고 생장점 주변조직에서 유래한 녹새체가 분화된 후 우세하게 자라서 녹색재생체가 우점하는 것으로 추정된다. ISSR 분석은 대조구로 모식물체 홍띠를(8개체), 재분화식물체는 녹색체 중, 1년간 노지포장에서 재배중인 녹색체(10개체)와 실험실내 화분에서 재배중인 시료를(10개체) 사용하였다. ISSR 밴드패턴을 비교한 결과, 재분화체는 실내포트 재배식물체 10.3%, 노지1년 재배식물체 8.3%로 대조구의 4.1%보다 유전적 다형성 비율이 2배 이상 높게 나타났다. 또한 재분화식물체들의 유전적 유사도를 평가하고 군집분석을 실시하였다.

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Influence of paper Mill Sludge Compost to Corn(Zea may L.) cultivated Soil(Incase of Inorganic Phosphorus) (옥수수(Zea may L.)재배 토양에서 제지슬러지퇴비의 시용효과: 무기태인산을 중심으로(II))

  • Lim, Hyun-Taek;Chang, Ki-Woon
    • Journal of the Korea Organic Resources Recycling Association
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    • v.9 no.1
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    • pp.99-108
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    • 2001
  • The study was carried out to evaluate characteristics of inorganic phosphate fractions in cultivating soil with paper mill sludge comport(PMSC). The experiment were conducted in cultivating corn by a pot test. The place of the pot test was a plastic house. The pot size was 1/5000a and PMSC was added at rates of 0, 30, and 100 Mg/ha. The pot experiment was divided to two treatments, one in which corn was cultivated and the other which was not. The items of measurement was pH and inorganic phosphate fractions which were determined for the pot tests for 80 days. The results can be concluded as follows, pH increased depending on the higher rates of PMSC application to the soil during the Pot tests, because calcium content was high and contents of nutrient were high. When the application rates of PMSC were increased, Saloid-P and Fe-P decreased, while Al-P and Ca-P in soil increased during the pot tests. According to the increase of PMSC application rates, the growth and the yield of com significantly increased Such results seem to be associated with the higher nutrient level from PMSC application. Although uptake of phosphorus in corn decreased in the corn with increased application of the PMSC, phosphate deficiency didn't appear in the pot test.

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Optimum Level of Nitrogen Fertilizer Based on Content of Nitrate Nitrogen for Growing Chinese Cabbage in Green House (시설조건(施設條件)의 배추 재배(栽培) 토양(土壤)에서 질산태질소(窒酸態窒素) 검정(檢定)에 의한 질소실비량(窒素施肥量) 결정(決定))

  • Park, Hyo-Taek;Hong, Soon-Dal
    • Korean Journal of Soil Science and Fertilizer
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    • v.33 no.6
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    • pp.384-392
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    • 2000
  • To establish N fertilizer recommended scheme for the Chinese cabbage cultivation in green house based on the soil test of nitrate nitrogen, relationship among the content of soil nitrate and fertilizer effects and fertilizer N use efficiency were investigated from nine soils which differed amount of nitrate nitrogen from $14mg\;kg^{-1}$ to$226mg\;kg^{-1}$. The amount of nitrate nitrogen in soil showed a positive correlation with the dry weight of chinese cabbage in the plot of no fertilization. When the fertilizer effects were calculated by difference between the plots of fertilization and no fertilization in the dry weight and the amount of N uptake, a negative correlation was obtained between the amount of nitrate nitrogen in soils and the fertilizer effects. There was also a negative correlation between the amount of nitrate nitrogen in soils and fertilizer use efficiency. Recommendation of application rate of nitrogen fertilizer based on content of $NO_3-N$ in soils was evaluated by the regression equation among the content of soil nitrate, fertilizer effects and fertilizer N use efficiency. Incase the content of $NO_3-N$ nitrogen in soil is more than $200mg\;kg^{-1}$, No N fertilization is recommended; However, The standard N fertilization($320kg\;ha^{-1}$) is recommended for the soils with less than $50mg\;kg^{-1}$. For the soils ranged from $50mg\;kg^{-1}$ to $200mg\;kg^{-1}$ in the amount of nitrate nitrogen, an equation has been developed in order to calculate the recommended amount of fertilizer N.

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Competitive Effects of Allelochemics on the Monoculture and Corss-cropping Culture System of Plants (작물(作物)의 단일(單一) 및 교호(交互) 재배시(栽培時) 알레로파지 특성(特性)에 관(關)한 연구(硏究))

  • Suh, Jang-Sun;Lee, Sang-Kyu
    • Korean Journal of Soil Science and Fertilizer
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    • v.26 no.4
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    • pp.259-264
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    • 1993
  • Allelopathic chemicals exudated from plants stimulate or inhibit crops directly or indirectly. To prove the effects of allelochemics, we isolated and identified the compounds by bioassays on the monoculture and crosscropping cultre systems. p-Coumaric acid were exudated on all of the test crops such as tomato, red pepper, lettuce, chinese cabbage and sesame, but pyrogallol and phenylacetic acid on tomato. hydroquinone on red pepper and egg plant, pyrogallol on lettuce, and vanillic acid on chinese cabbage. The highest total concentration of allelochemics was $5,883{\mu}g$ on tomato, lowest was $220{\mu}g/g$ dry plant weight on sesame. On the cross-cropping culture of tomato-egg plant, tomato-red pepper, chinese cabbage-egg plant, chinese cabbage-red pepper and chinese cabbage-sasame, the plant height, aerial dry weight and total dry weight of the tomato and the chinese cabbage were inereased contrast with monoculture, but decreased greatly on red pepper and sesame. Growth rate of both crops on the cross-cropping culture of tomato-chinese cabbage declined, while that of chinese cabbage was increased but lettuce decreased on the chinese cabbage-lettuce cross-cropping culture contrast with monoculture.

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