Effect of Polyolefine Greenhouse Covering Film on Growth of Lettuce and Cucumber in Cool Season Cultivation

Kwon, Joon-Kook; Park, Kyoung-Sub; Choi, Hyo-Gil; Lee, Sun-Yi; Bekhzod, K.; Kang, Nam Jun

doi:10.12791/ksbec.2012.21.4.312

Cited by 5 publications

(4 citation statements)

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“…난방비 가 경영비에 차지하는 비중이 약 30-35%를 차지하고 있어 농가 경영에 어려움을 주고 있으며, 이 비중은 더 증가할 것으로 생각된다 (Choi et al, 2004). 온실에서는 온도를 점차적으로 상승 시키기 위하여 초저녁부터 일출 직후까지 난방에너지를 투입한다 (Kwon et al, 2004).…”

Section: 동절기 반밀폐형 온실과 일반형 온실의 시설 내부 기상 환경 비교unclassified

Comparison of Climate between a Semi-closed and Conventional Greenhouse in the Winter Season

Jeon,

Kim,

et al. 2022

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This study analyzed and compared the air temperature, humidity, CO 2 concentration, solar radiation, and electricity consumption data collected from the climate control software of a semi-closed and a conventional greenhouse in the winter season. There was no difference in the daytime temperature between the semi-closed and the conventional greenhouse, but there was a statistically significant difference in night temperature, which was 18.0 ± 0.8°C for the conventional greenhouse and 18.8 ± 0.8°C for the semi-closed greenhouse. As the outside temperature decreased, the difference became larger in January. The change in the daytime humidity deficit (HD) with respect to the amount of global radiation was significantly different between the two greenhouses; it was 0.08 g•kg -1 for the semi-closed greenhouse and 0.15 g•kg -1 for the conventional greenhouse per 1 MJ•m -2 of radiation. As a result of comparing the average 24-hour HD in the two greenhouses, it was found that the humidity in the conventional greenhouse was higher and the coefficient of variation was much larger, indicating a large deviation in the humidity change. There was no difference in the average daytime CO 2 concentration between the two greenhouses, but at night, there was a significant difference; it was 682.1 ± 103.7 ppm in the conventional greenhouse and 762.7 ± 107.4 ppm in the semi-closed greenhouse. In winter, the average electricity consumption was 13.8 kWh•m -2 in the semi-closed greenhouse and 15.3 kWh•m -2 in the conventional greenhouse; it was significantly higher in the conventional greenhouse. These results suggest that the semi-closed greenhouse has a high energy efficiency and is capable of uniform crop growth by stably maintaining the internal climate environment of the facility.

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Section: 동절기 반밀폐형 온실과 일반형 온실의 시설 내부 기상 환경 비교unclassified

Comparison of Climate between a Semi-closed and Conventional Greenhouse in the Winter Season

Jeon,

Kim,

et al. 2022

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“…2). 앞서 발표된 오이 조기가온 연구결과도 본 연구 결과와 일치되는데 일출전에 난방온도를 12°C에서 16°C로 올려서 커튼 개방 전 2시간, 1시간 및 0시간 가온 후 광합성속도, 기공전도도 및 증산량을 측정하였을 대 2시간 조기가온 처리에서 가장 높았고 무가온 처리구는 현저히 감소하였다 (Kwon et al, 2004). 엽면적은 4일간 PH-30 처리 후 Control 처리와 비교하였을 때 상승폭이 가장 큰 것으로 나타났고 그 다음으로 PH-60과 PH-90 처리간 차이가 컸으며 PH-30과 PH-60 처리간 변화폭이 가장 작았다(Fig.…”

Section: 측정항목 및 측정방법unclassified

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

Cho¹,

Cho²,

Park³

et al. 2021

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This study aims to determine effects of heating greenhouse and root-zone prior to sunrise in winter season on water uptake, photosynthesis, plant growth and yield for tomato rockwool hydroponics. Greenhouse heating was controlled at 25°C prior to sunrise with 4-day intervals [Control: None heating, PH-30: 30min-heating (07:30-08:00), PH-60: 60min-heating (07:00-08:00), PH-90: 90minheating (06:30-08:00)] with Sap Flow-and Integrated Solar Radiation-automated irrigation systems (SF, ISR) in experiment I. Root-zone heating was controlled at 19°C prior to sunrise (RPH-90) or at 13°C (Control) with ISR system in experiment II. The substrate temperature was increased to 4°C for both PH-30 and PH-60 treatments, and to 7°C for PH-90. In the SF system, the first irrigation started average 18, 26, 30 mins earlier under the PH-30, PH-60, and PH-90, respectively compared to the ISR system. The water uptake was higher as heating duration was longer. The photosynthetic rate under the PH-90 was higher than that in the PH-30. The degree of leaf area change was greater between the PH-30 and Control, followed by between the PH-60 and PH-90. The substrate temperature ranged from 13.3 to 19.1°C under the RPH-90 treatment, whereas it ranged from 11.0 to 17.2°C under the control in the Experiment II. The water use efficiency (WUE), leaf area, specific leaf area, and marketable yield was higher about 7.0, 10.3, 23.8, and 23.0%, respectively under the RPH-90, compared to the control.

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“…Low temperatures at a range of 10 − 15°C cause chilling stress damage at any stage of eggplant growth and developmen (Abdel-Aziz and Geeth , 2019). The damage happend due to low temperature stress was alleviated by using some agricultural methods, like plant growth regulators (Orabi et al, 2015;Siddiqi, et al, 2019;Vardhini , 2019), planting in plastic house (Kwon et al, 2012) or through producing cold tolerance cultivars of eggplants (Singh et al, 2015). Eggplant cultivars differed in flowering, flower morphology and fruit setting (Sekara and Bieniasz, 2008), therefore, there is great variability of fruit setting and yielding among different varieties (Kowalska, 2008).…”

Section: Introductionmentioning

confidence: 99%

Performance of some spherical eggplant hybrids under plastic house and open field conditions

Sayed¹,

Mahmoud²

2022

Scientific Journal of Agricultural Sciences

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Two experiments were conducted during the two winter seasons of 2018/2019 and 2019/2020 at the Agricultural Experimental Station of Faculty of Agriculture Cairo University Giza to investigate the response of four spherical F1 cultivars (Sawad El Laiel, Petra, Amedo and Black Berry) of eggplant (Solanum melongena L.) under two different production systems (open field and plastic house), consider the vegetative growth, fruit quality and yield. Plants grown in open field had higher values of number of branches, early and total yield, fruit weight, fruit diameter, fruit total carbohydrate, vitamin C, macro and micro elements and significant increase in leaf dry matter, leaf concentrations of macro and microelements compared with plastic house production. Reversely, planting in plastic house significantly increased plant height, leaf area and fruit dry matter compared with planting in open field. The period from transplanting to first harvest was shorter in plants grown in open field than those grown in plastic house. Meanwhile, there were no significant differences between production systems in leaf chlorophyll, fruit length, fruit contents of TSS, Ca, Mg, niacin and omega3 in both seasons. The analysis showed significant differences among the different eggplant cultivars for all traits. Sawad El Laiel' recorded the highest value of early and total yield, average fruit weight, total carbohydrate, TSS and leaf concentrations of K, Ca and B. On the other hand, 'Amedo' significantly exceeded all other cultivars in chlorophyll reading and leaf concentrations of N, P, Mg, Fe, Mn and Zn as well as fruit diameter, fruit concentrations of N, P, K, Ca, Mg, Fe, Mn, Zn, vitamin C, niacin (B3) Omega 3 and dry matter. 'Petra' was the earliest cultivar, while the 'Black Berry' was the latest one. The interaction between cultivars and production systems had significantly influence on all traits under study.

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Effect of Polyolefine Greenhouse Covering Film on Growth of Lettuce and Cucumber in Cool Season Cultivation

Cited by 5 publications

References 0 publications

Comparison of Climate between a Semi-closed and Conventional Greenhouse in the Winter Season

Comparison of Climate between a Semi-closed and Conventional Greenhouse in the Winter Season

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

Performance of some spherical eggplant hybrids under plastic house and open field conditions

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