Stable Production of Summer Spinach (Spinacia Oleracea L.) in Soilless Culture in the Highlands

Lee, E.H.; Lee, J.N.; Kwon, Young Soon; Jang, Suk-Woo; Im, Ju Sung; Kim, W.B.; Ryu, Song-Hee

doi:10.17660/actahortic.2007.742.12

Cited by 4 publications

(3 citation statements)

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“…US and RW were considered to not have enough moisture for germination because their container capacity values were lower than those of the other growing media. Usually, urethane sponges lose more moisture rapidly than other media because the physical structure of the urethane sponge causes vertical water movement [23]. As an example, it was reported by Seo [5] that germination was the lowest in urethane sponges among rockwool, perlite, coir, and urethane sponges.…”

Section: Resultsmentioning

confidence: 99%

Growth Characteristics of Adenophora triphylla var. japonica Hara Seedlings as Affected by Growing Medium

Lee

Kim

Jeong

et al. 2019

Plants

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Adenophora triphylla var. japonica Hara is a highly valued medicinal plant that is used to treat or prevent bronchitis, cough, cancer, and obesity. However, there has been no study on the production of Adenophora triphylla var. japonica Hara seedlings in a closed-type plant production system (CPPS). This study was conducted to examine the growth characteristics of Adenophora triphylla var. japonica Hara seedlings as affected by different growing media. The seeds were sown on a 128-cell plug tray filled with urethane sponges (US), LC grow foam (LC), rockwool (RW), or terra-plugs (TP). The seedlings were cultured for a duration of 54 days under temperature 25 ± 1°C, a photoperiod of 12/12 h (light/dark), and light intensity of 180 µmol·m−2·s−1 photosynthetic photon flux density provided by RB LEDs (red:blue = 8:2) in a closed-type plant production system (CPPS). The germination rate of Adenophora triphylla var. japonica Hara was significantly highest in the TP. Also, seedling shoot growth indicators of plant height, leaf length, leaf width, number of leaves, fresh weight (FW), and dry weight (DW) of the shoot, and leaf area were markedly the greatest in the TP and the lowest in the US. The SPAD (soil-plant analysis development) value was higher in the TP and US than in the LC or RW. In addition, the seedling root growth characteristics of total root length, root surface area, root volume, and number of root tips were significantly greatest in the TP. Moreover, the maximum root diameter, FW and DW of roots were the greatest in the TP. In conclusion, the results suggest that TP are viable for the growth development of Adenophora triphylla var. japonica Hara seedlings.

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Section: Resultsmentioning

confidence: 99%

Growth Characteristics of Adenophora triphylla var. japonica Hara Seedlings as Affected by Growing Medium

Lee

Kim

Jeong

et al. 2019

Plants

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“…The initial and final germination rate and MDG was lowest in the UF medium. Seo et al (2007) and Lee et al (2011) reported that spinach (Spinacia oleracea) seeds showed the lowest germination rate in UF medium. And seeds of lettuce and pak-choi (Brassica campestris) had only 5.1 and 6.9% germination, respectively, in UF medium (Choi et al, 2011).…”

Section: Germination Propertiesmentioning

confidence: 99%

“…UF medium had the highest total porosity and air space. Usually, UF medium loses moisture more rapidly than other media (Choi et al, 2011;Lee et al, 2011). UF medium is thought to have insufficient moisture holding capacity.…”

Section: Germination Propertiesmentioning

confidence: 99%

Selection of Newly Developed Artificial Medium for Lettuce Production in a Closed-type Plant Production System

Kim¹,

Lee²,

Kim³

et al. 2019

HST

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This study evaluated different media for lettuce cultivation in a closed-type plant production system. Lettuce seeds were sown in 128-cell plug trays filled with six different media, and then transplanted at 11 days after sowing in a closed-type plant production system. The used media were commercial media (urethane foam, rockwool, and Q plug), and newly developed media (PU 14-S1, TP-S1, and PU-7B). Higher values were observed for total porosity, container capacity, and air space in urethane foam and PU 14-S1. Bulk density was the greatest in the TP-S1, followed by the Q plug and rockwool. The pH and electrical conductivity (EC) of the medium ranged from 5.17 to 6.50 and 0.01 to 0.31 dS•m -1, respectively. Germination properties were strong in the rockwool, Q plug, and PU-7B media. The initial and final growth of lettuce measured at 11 and 32 days after sowing, respectively, were the best in the Q plug medium, followed by the rockwool and TP-S1 media. These media had higher EC values than the others. The applicability of newly developed medium PU-7B was confirmed for lettuce cultivation in a closed-type plant production system when the EC of PU-7B was regulated similarly to the EC of Q plug medium.

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Innovative harvest practices of Butterhead, Lollo rosso and Batavia green lettuce (Lactuca sativa L.) types grown in floating hydroponic system to maintain the quality and improve storability

Kotsiras

Vlachodimitropoulou

Gerakaris

et al. 2016

Scientia Horticulturae

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Stable Production of Summer Spinach (Spinacia Oleracea L.) in Soilless Culture in the Highlands

Cited by 4 publications

References 0 publications

Growth Characteristics of Adenophora triphylla var. japonica Hara Seedlings as Affected by Growing Medium

Growth Characteristics of Adenophora triphylla var. japonica Hara Seedlings as Affected by Growing Medium

Selection of Newly Developed Artificial Medium for Lettuce Production in a Closed-type Plant Production System

Innovative harvest practices of Butterhead, Lollo rosso and Batavia green lettuce (Lactuca sativa L.) types grown in floating hydroponic system to maintain the quality and improve storability

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