• Title/Summary/Keyword: Peatmoss

Search Result 173, Processing Time 0.028 seconds

Composting and Fertilizing Characteristics of Poultry Manure Mixture with Compressed Expansion Rice Hull as Bulking Agent (수분조절제로서 팽화왕겨를 이용한 계분 발효 특성 및 시비 효과)

  • Kim, Young-Sun;Cho, Sung-Hyun;Lee, Hoon-Soo;Lee, Geung-Joo
    • Journal of the Korea Organic Resources Recycling Association
    • /
    • v.28 no.4
    • /
    • pp.5-13
    • /
    • 2020
  • This study was conducted to evaluate effects of compressed expansion rice hull (CERH) as bulking agent on physicochemical properties of composting poultry manure (PM) and of its fertilization on lettuce and pak choi growth. Treatments were designed as follows; sawdust treatment (90% PM + 10% sawdust; SP), peatmoss treatment (90% PM + 10% peatmoss; PP), and CERH treatments [PCR1 (90% PM + 10% CERH 1.3 mm) and PCR2 (90% PM + 10% CERH 3.0 mm)]. Physicochemical properties such as temperature, water content, pH, and total carbon of composted poultry piles for 31 days were unaffected by various bulking agents. However, total nitrogen content in compost pile was higher in PP and PCR1 than that of SP or PCR2. After composting for 31 days, content ranges of N, P2O5, and K2O in the composting PM piles were 19.1~19.7%, 47.6~51.6%, 2.76~3.65%, and 2.53~2.90%, respectively. As compared to SP treatment, dry weight of lettuce treated with PP and PCR1 increased by more than 10%, but only in PP for pak choi. These results indicated that CERH 1.3 could be used as bulking agents for composting PM on behalf of peatmoss or sawdust.

Mass Production of Eleutherococcus senticosus Plants through in vitro Cell Culture (세포 배양을 통한 가시오갈피(Eleutherococcus senticosus) 묘목의 대량 생산 시스템 개발)

  • Han, Jeong-Yeon;Choi, Yong-Eui
    • Journal of Plant Biotechnology
    • /
    • v.30 no.2
    • /
    • pp.167-172
    • /
    • 2003
  • Immature zygotic embryos of Eleutherococcus senticosus seeds matured rapidly within one month when the seeds comprising zygotic embryos were pieced to small size and cultured on 1/2 MS medium. Frequency of somatic embryos formation was declined rapidly when the zygotic embryos germinated and grew to plantlets. Embryogenic cells were induced by consecutive subculture of somatic embryos on MS medium with 1.0mg/L2,4-D. After heart-shaped somatic embryos were induced by suspension culture, these embryos were plated onto petri dish to support maturation of embryos. Germination of embryos occurred on medium with 5mg/L GA$_3$and transferred to culture bowl to stimulate the further growth. Frequency of soil survival of plantlets was influenced by soil mixture (perlite and peatmoss). The suitable combination of perlite and peatmoss was 1:5, and the soil survival rate was 78% after 4 months. The soil transferred plantlets were over-wintered in field condition after defoliation. New year sprouting of plants was achieved successfully and they grew to adult plants. These results indicate that the systematic procecure of plant production in E. senticosus for micro propagation.

A Study on acclimatization culture of the tissue cultured seedings in Zantedschia spp. (유색칼라 기내배양묘의 순화재배에 관한 연구)

  • Park, N.B.
    • Journal of Practical Agriculture & Fisheries Research
    • /
    • v.5 no.1
    • /
    • pp.20-27
    • /
    • 2003
  • This experiment was carried out to develop an acclimatization system of tissue cultured seedling in Zantedeschia spp. There was not different in percentage of leaf emergence by the media compost of acclimatization but tuber was enlarged in sand(50%)+peatmoss(50%) treatment after 6 months growth. The optimum time for the acclimatizantion of Zantedeschia spp. was from the 20th of March to 20th of April. During this time, rate of acclimatization reached over 90 percentage. However on the 20th of august, acclimatization was low to 64-70.4 percentage. Size of tuber was enlarged in planting on the 20th of March. The weight of tuber was better in 10×10cm density of planting than others.

Effects of Medium and Planting Density on Growth and Yield of Seed Potatoes Grown in a Wick Hydroponic System (배지 및 재식밀도가 심지양액재배 씨감자의 생육 및 수량에 미치는 영향)

  • Kim, Chan-Woo;Song, Chang-Khil;Park, Jung-Sik;Mun, Hyun-Ki;Kang, Young-Kil;Kang, Bong-Kyoon
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.53 no.3
    • /
    • pp.251-255
    • /
    • 2008
  • This study was carried out in 2002 to determine the usefulness of Jeju scoria for a component of a growth medium and optimum planting density of 'Dejima' seed potatoes (Solanum tuberosum L.) grown in a wick hydroponic system. The minitubers ($7.0{\pm}0.2\;g$) produced in an aeroponics system were planted at five planting densities (3 to 15 tubers/box; 19 to $95\;tubers/m^2$) in polystyrene boxes (51 cm long $\times$ 31 cm wide $\times$ 20 cm high) containing two media (perlite + peatmoss and Jeju scoria + peatmoss 1:2, v/v mixtures). There were no significant interactions between medium and planting density for the growth and tuber yield traits. Shoot growth and the number of tubers per plant were not significantly affected by the media. However, tuber yield was higher in the perlite + peatmoss mixture than in the Jeju scoria + peatmoss mixture. The percentage of underdeveloped plants ranged from 8.3 to 14.7% at four lower planting densities (3 to 12 tubers/ box), and was 25.8% at the highest planting density (15 tubers/box). As planting density was increased from 3 to 15 tubers per box, seed potato (${\geq}5\;g$ tuber) number increased from 101 to 269 and yield from 6.3 to $11.6\;kg/m^2$. These results indicate that the perlite + peatmoss mixture might be more suitable for seed potato production in the wick hydroponic system, and considering the percentage of underdeveloped plants and tuber yield, optimum planting density would be 56 to $76\;tubers/m^2$ in the system depending on availability of seed potatoes.

Physicochemical Properties of Various Blends of Peatmoss and Perlite and the Selection of Rooting Media for Different Growing Seasons (다양한 종류의 피트모스와 펄라이트 혼합에 따른 물리·화학성 변화와 계절별 육묘를 위한 상토 선발)

  • Shim, Chang Yong;Kim, Chang Hyeon;Park, In Sook;Choi, Jong Myung
    • Horticultural Science & Technology
    • /
    • v.34 no.6
    • /
    • pp.886-897
    • /
    • 2016
  • The physical properties of rooting media for the establishment of plugs in a greenhouse are modified according to variations in the greenhouse environment throughout the season. In this study, we established a standard for rooting media for the production of plug seedlings for each growing season (summer, winter and spring fall). Eight types of peatmoss (PM) and 4 types of perlite (PL) commonly used in Korea were collected and blended with the ratio of 7 parts PM to 3 parts PL (v/v) to make 32 different rooting media blends. We determined the total porosity (TP), container capacity (CC), air-filled porosity (AFP), pH, and electrical conductivity (EC) of the 32 media blends, and 6 media blends were selected for seasonal use. We also conducted additional analyses for plant easily available water (EAW), buffering water (BW), cation exchange capacity (CEC), and nutrient contents in the 6 media blends. The TP, CC, and AFP of the 32 media blends ranged from 64.7 to 96.0%, 42.9 to 90.1%, and 1.3 to 27.8%, respectively, indicating that the physical properties were strongly influenced by the type of PM and PL. The pH and EC of the PMs ranged from 2.96 to 3.81 and 0.08 to $0.47dS{\cdot}m^{-1}$, respectively. However, after blending the PM with the PL the pH was raised and the EC was lowered The media blends selected for the summer growing season were Blonde Golden peatmoss (BG) + No. 1 perlite size < 1 mm (PE1) and Latagro 0-10 mm (L1) + No. 2 perlite size 1-2 mm (PE2). These two media blends had 89.8-90.9% of TP, 80.8-81.3% of CC, and 9.0-9.7% of AFP. The media blends selected for the winter growing season were Sfagnumi Turvas (ST) + PE2 and Latagro 20-40 mm (L3) + PE2. These media blends had 79.9-86.7% of TP, 60.4-74.9% of CC, and 11.8-19.6% of AFP. The TP, CC, and AFP of two media blends, BG + No.3 perlite 2-5 mm (PE3) and Orange peatmoss (O) + PE3, selected for the spring and fall growing seasons, respectively, were 85.2-87.3%, 77.9%, and 7.4-9.4%, respectively. The percentage of EAW of the media blends selected for the spring, summer, and winter growing seasons ranged from 24.2-24.9%, 22.0-28.6%, and 18.0-21.8%, respectively, but the percentages of BW were not significantly different among the selected root media blends. The pH, EC, and CEC of the 6 selected media blends ranged from 3.11-3.97, $0.06-0.26dS{\cdot}m^{-1}$, and $97-119meq{\cdot}100g^{-1}$, respectively.

Growth and Development of Pot Chrysanthemum 'Pink Pixie Time' in Various Mixtures of Shattered PUR and CGF (PUR과 CGF를 재활용한 혼합배지에서 분국화 'Pink Pixie Time'의 생육)

  • 정병룡;신우근
    • Journal of Bio-Environment Control
    • /
    • v.11 no.1
    • /
    • pp.29-34
    • /
    • 2002
  • An experiment was conducted to evaluate shattered industrial polyurethane (PUR) and cellular glass foam (CGF) as growth medium components. Pot chrysanthemum 'Pink Pixie Time 'was cuttured in media containing various volume ratios of PUR, CGF, peatmoss, coir, and perlite. Before plant culture, pH and EC of media were determined. Container capacity (%) was low in perlite and CGF-containing media, but it increased when incorporation ratio of peatmoss or coir was increased. pH was stable between 5.0 and 6.3, but was high in coir-contaning media as compared to other media tested. EC was very high in coir-containing media. Hight at 34 days after planting was the greatest in media containing CGF, and number. of leaves was similar among treatments. Growth in PUR-containinly media was poorer than that in the other media, with some leaf edge burning. Trends in growth measured at 97 days after planting was similar to that measured at 34 days after planting.

Effect on the Growth of Pllioblastus pygmaed and Soil Characteristics as Affected by Difference of Soil Thickness and Soil Mixture Ratio in the Shallow-Extensive Green Roof Module System (저관리 옥상녹화 모듈에서 토심, 배합비의 차이가 토양의 특성 및 흰줄무늬사사의 생육에 미치는 영향)

  • Park, Je-Hea;Ju, Jin-Hee;Yoon, Yong-Han
    • Journal of Environmental Science International
    • /
    • v.19 no.7
    • /
    • pp.871-877
    • /
    • 2010
  • The objectives of this study were to compare growth of Pllioblastus pygmaed and soil characteristics as affected by difference of soil thickness and mixture ratio in shallow-extensive green roof module system, and to identify the level of soil thickness and mixture as suitable growing condition to achieve the desired plants in green roof. Different soil thickness levels were achieved under 15cm and 25cm of shallow-extensive green roof module system that was made by woody materials for $500{\times}500{\times}300mm$. Soil mixture ratio were three types for perlit: peatmoss: leafmold=6:2:2(v/v/v, $P_6P_2L_2$), perlit: peatmoss: leafmold=5:3:2(v/v/v, $P_5P_3L_2$) and perlit: peatmoss: leafmold=4:4:2(v/v/v, $P_4P_4L_2$). On June 2006, Pllioblastus pygmaed were planted directly in a green roof module system in rows. All treatment were arranged in a randomized complete block design with three replication. The results are summarized below. In term of soil characteristics, Soil acidity and electric conductivity was measured in pH 6.0~6.6 and 0.12dS/m~0.19dS/m, respectively. Organic matter and exchangeable cations desorption fell in the order: $P_4P_4L_2$ > $P_5P_3L_2$ > $P_6P_2L_2$. $P_6P_2L_2$ had higher levels of the total solid phase and liquid phase, and $P_4P_4L_2$ had gas phase for three phases of soil in the 15cm and 25cm soil thickness. Although Pllioblastus pygmaed was possibled soil thickness 15cm, there was a trend towards increased soil thickness with increased leaf length, number of leaves and chlorophyll contents in 25cm. The growth response of Pllioblastus pygmaed had fine and sustain condition in order to $P_6P_2L_2$ = $P_5P_3L_2$ > $P_4P_4L_2$. However, The results of this study suggested that plants grown under $P_4P_4L_2$ appear a higher density ground covering than plants grown under $P_6P_2L_2$. Collectively, our data emphasize that soil thickness for growth of Pllioblastus pygmaed were greater than soil mixture ratio in shallow-extensive green roof module system.

Influence of Physico.Chemical Properties of Root Substrates on the Growth of 'Maehyang' Strawberry Daughter Plants Produced by Bag Culture of Stock Plants (포트 충전용 상토의 물리.화학성이 플라스틱 백 재배를 통해 발생한 '매향' 딸기의 자묘 생육에 미치는 영향)

  • Choi, Jong-Myung;Park, Ji-Young;Ko, Kwan-Dal;Lee, Chi-Won W.
    • Korean Journal of Agricultural Science
    • /
    • v.37 no.2
    • /
    • pp.199-207
    • /
    • 2010
  • This research was conducted to determine the influence of physiological and chemical properties of root substrates on the growth of the daughter plants of 'Maehyang' strawberry produced by bag culture. The daughter plants produced by stock plants during bag culture were individually separated and grown in 10-cm diameter plastic pots containing six different formulations of root substrates: a) 50% peatmoss plus 50% vermiculite (5:5 by volume, A), b) 70% peatmoss plus 30% perlite (7:3, B), c) 70% coir dust plus 30% perlite (7:3, C), d) mixture of 35% coir dust, 35% peatmoss, and 30% perlite (3.5:3.5:3.0, D), e) mixture of 20% rice hull, 70% coir dust, and 10% perlite (2:7:1, E), and f) 30% rice hull plus 70% coir dust (30:70, F). The container capacity and air filled porosity of the growing medium varied greatly among the six substrate formulations evaluated. The substrates E and F had less container capacity and higher air-holding spaces than the rest of the formulations. Therefore, these two formulations (E and F) may cause a problem in water management during the production of healthy daughter plants. The substrate formulations A, B, and D retained higher nitrogen (N) concentrations than other formulations containing coir dust or rice hull. The substrate formulations E and F which contained rice hull had lower N, phosphorus (P), and potassium(K) concentrations than other substrate formulations containing coir. The quality of the daughter plants grown in all six different substrate formulations was good with the crown diameters at around 10 mm. Fresh weights of the daughter plants grown in substrate formulations A, C, and D were higher than those obtained from B, E, and F. Dry weights of the daughter plants showed a similar trend. The daughter plants having high fresh and dry weights and increased crown diameter are in demand by the industry. For this reason, the substrate formulations A, C and D can readily be used as potting mixes during the production of 'Maehyang' strawberry transplants utilizing the bag culture system.

Modeling of Medium Temperature Drops of the Elevated-bench Hydroponics for Strawberry Cultivation during Low Temperature Season (저온기 딸기 고설 수경재배시 온실기온에 따른 배지내 온도강하 모델 개발)

  • Park, Jae-Wan;Ha, Yu-Shin;Kim, Ki-Dong;Park, Dae-Heum;Lee, Ki-Myung;Jun, Ha-Joon;Kwon, Soon-Gu;Choi, Won-Sik;Chung, Sung-Won
    • Journal of Bio-Environment Control
    • /
    • v.19 no.3
    • /
    • pp.123-129
    • /
    • 2010
  • A study on modeling of medium temperature drops of the elevated-bench hydroponic system for strawberry cultivation during low temperature season was conducted. Four different conditions were used for the experiment. These consisted of two kinds of bed types (plant, V), four kinds of medium (rice, perlite, rice hulls80% and peatmoss20%, perlite80% and peatmoss20%), two kinds of mulched bed (mulched, non mulched) and four kinds of greenhouse air temperature (l.5, 3.2, 5.0, $6.7^{\circ}C$), and the results were summarized as follows: Temperature drop of medium in the V-bed was slower than that in the plant bed, showing better insulation effect of V-bed. Temperature drop of medium with mulching on the top of the bed was slower than the case without mulching, as a result, the beneficial effect of temperature drop was appeared in mulched bed. Linear regression of the temperature descent rate and the temperature difference between medium and air showed significant correlation. The regression equation for the Pearlite80% and Peatmoss20% in the V-bed was f(x) = -0.2656 + 0.1345x at the $R^2$ of 0.9269. Using the model, the temperature drop during night can be predicted for the various media at the different depths.

The physicochemical properties and effects of various growing media on the growth of pepper seedling (배양토의 물리.화학적 성질과 배양토 종류가 고추묘의 생육에 미치는 영향)

  • 박권우;이정훈
    • Proceedings of the Korean Society for Bio-Environment Control Conference
    • /
    • 1993.05a
    • /
    • pp.7-8
    • /
    • 1993
  • 과채류의 생산에 있어서 육묘는 매우 중요하다. 육묘 시 묘의 생육에 미치는 요인은 다양하나 그 중 배양토는 가장 기본적인 요소가 된다. 배양토는 보수성이 좋고 균질, 무균이어야 할 뿐만 아니라 운송성, 이식성 등이 고려되어야 하며, 이·화학적 성질의 균일성이 필수적으로 요구된다. 이에 본 실험에서는 현재 외국에서 배양토로 많이 사용되고 있는 peatmoss(원예용상토), TKS, vermiculite, perlite 및 이들 인조 배양토에 밭흙ㆍ모래를 배합했을 시 물리ㆍ화학적 특성을 조사하고, 이들 배양토가 고추묘의 생육에 미치는 영향을 조사하였다. (중략)

  • PDF