Impact of the Heating Greenhouse and Root-Zone prior to Sunrise on Water Uptake, Photosynthesis, Plant Growth and Yield for Tomato Rockwool Hydroponics

Cho, Eunkyung; Cho, Il-Hwan; Park, Juseong; Choi, Ki-Young; Choi, Eun-Young

doi:10.7235/hort.20210007

Cited by 2 publications

(1 citation statement)

References 30 publications

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“…The amount of bell pepper produced in South Korea in 2019 amounted to 80,000 tons (Yeo et al, 2021). Tomato (Solanum lycopersicum L.) is an important crop, with 160 million tons produced worldwide yearly and 390,000 tons produced in South Korea in 2019 (Zhang et al, 2016;Cho et al, 2021). Approximately 12% of domestic controlled-environment agriculture area in Korea is used to grow crops hydroponically.…”

Section: Introductionmentioning

confidence: 99%

Growth Characteristics of Bell Pepper and Tomato Hydroponically Cultivated in Growth Media Containing Different NaCl Concentrations in Raw Water on Reclaimed Lands

Jung,

Lee

2023

HST

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Reclaimed land used as arable land can improve low food self-sufficiency or export competitiveness through large-scale controlled-environment agriculture. However, high salinity in reclaimed land can cause diseases and decrease yields during crop cultivation. This study was conducted to understand the growth characteristics of bell pepper and tomato hydroponically cultivated in rockwool and coir media reflecting changes in electrical conductivity (EC) and NaCl concentrations in the raw water of reclaimed lands. For bell pepper, Machai varieties (C. annuum L. cv. Machai) were used. For tomatoes, TY TRUST varieties (S. lycopersicum L. cv. TY TRUST) were used. NaCl was supplemented into the nutrient solution once a week to construct a treatment group based on EC. For bell pepper and tomato, NaCl was supplied at the following levels: none (CON), EC 4.0 (T1), EC 4.5 (T2), EC 5.0 (T3), and EC 5.5 dS•m -1 (T4). The plant height, leaf area, leaf fresh weight, leaf dry weight, stem fresh weight, stem dry weight, and fruit yield of bell pepper and tomato were investigated as indicators of growth characteristics of crops. For bell peppers, the growth index decreased with an increase in the stage as the NaCl concentration was increased, regardless of the type of media used. The use of coir media could secure bell pepper production yields without a significant effect of the NaCl concentration at the levels used in this study. However, for tomatoes, the leaf area was significantly decreased when NaCl concentrations were applied compared to that of the control group. Also, most other growth indicators were significantly decreased at NaCl concentrations above T2. The effects of the NaCl concentration were reduced when tomatoes were cultivated in coir media instead of rockwool media. Therefore, for hydroponically cultivated bell peppers and tomatoes, if raw water containing NaCl is supplied, it may be possible to maintain the crop yield if coir media are used.

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Section: Introductionmentioning

confidence: 99%

Growth Characteristics of Bell Pepper and Tomato Hydroponically Cultivated in Growth Media Containing Different NaCl Concentrations in Raw Water on Reclaimed Lands

Jung,

Lee

2023

HST

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Effects of Temperature and Irrigation Intervals on Photosynthesis, Growth and Growth Analysis of Pot-grown Cucumber Seedlings

Choi

Lee³

et al. 2023

J. Bio-Env. Con.

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This study was conducted in an indoor cultivation room and chamber where environmental control is possible to investigate the effect of temperature and irrigation interval on photosynthesis, growth and growth analysis of potted seedling cucumber. The light intensity (70 W•m -2 ) and humidity (65%) were set to be the same. The experimental treatments were six combinations of three different temperatures, 15/10℃, 25/20℃, and 35/25°C, and two irrigation intervals, 100 mL per day (S) and 200 mL every 2 days (L). The treatments were named 15S, 15L, 25S, 25L, 35S, and 35L. Seedlings at 0.5 cm in height were planted in pots (volume:1 L) filled with sandy loam and treated for 21 days. Photosynthesis, transpiration rate and stomatal conductance at 14 days after treatment were highest in 25S. These were higher in S treatments with a shorter irrigation interval than L treatments. Total amount of irrigation water was supplied evenly at 2 L, but the soil moisture content was highest at 15S and lowest at 25S > 15L > 25L, 35S and 35L in that order. Humidity showed a similar trend at 15/10℃ (61.1%) and 25/20℃ (67.2%), but it was as high at 35/25°C (80.5%). Cucumber growth (plant height, leaf length, leaf width, chlorophyll content, leaf area, fresh weight and dry weight) on day 21 was the highest in 25S. Growth parameters were higher in S with shorter irrigation intervals. Yellow symptom of leaf was occurred in 89.9% at 35S and 35L, where the temperature was high. Relative growth rate (RGR) and specific leaf weight (SLA) were high at 25/20℃ (25S, 25L), RGR tended to be high in the S treatment, and SLA in the L treatment. Water use efficiency (WUE) was high in the order of 25S, 25L > 15S > 15L, 35S, and 35L. As a result of the above, the growth and WUE were high at the temperature of 25/20℃.

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Impact of the Heating Greenhouse and Root-Zone prior to Sunrise on Water Uptake, Photosynthesis, Plant Growth and Yield for Tomato Rockwool Hydroponics

Cited by 2 publications

References 30 publications

Growth Characteristics of Bell Pepper and Tomato Hydroponically Cultivated in Growth Media Containing Different NaCl Concentrations in Raw Water on Reclaimed Lands

Growth Characteristics of Bell Pepper and Tomato Hydroponically Cultivated in Growth Media Containing Different NaCl Concentrations in Raw Water on Reclaimed Lands

Effects of Temperature and Irrigation Intervals on Photosynthesis, Growth and Growth Analysis of Pot-grown Cucumber Seedlings

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