A Simple Emergence Model of Southern Type Garlic Based on Temperature

Moon, Kyung Hwan; Choi, Kyoung-Seong; Son, I.; Song, Eun-Young; Oh, Seung‐Won

doi:10.5532/kjafm.2014.16.4.343

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Previous studies have used high pressure sodium lamps or infrared lamps, and some reported various plant growths, although the crops were different (Moon et al, 2014;Graper and Healy, 1991). As such, it was revealed that supple- Table 3.…”

Section: Discussionmentioning

confidence: 99%

Growth and Agronomic Traits of Green Onion under the Agrovoltaic System with Red Supplemental LED Lighting

Kim

Suh

et al. 2023

J. People Plants Environ

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Background and objective: An agrovoltaic system is a power generation method applying photovoltaics (PV) to crops cultivated on a farm. Usually, the PV system covers less than 30% of the upper surface of crops on the ground. If the PV system covers the upper layer of the crops, the yield will decrease by 15-20% due to the shading of the PV module. This study was carried out to investigate the effects of red supplemental light-emitting diode (LED) lighting under the PV system on growth and agronomic traits of green onions.Methods: To resolve the issue about decreasing yield, we constructed a 50 kW agrovoltaic system with the red (660 nm peak) LED dimming facility on the farm with 3 different plots for comparison. The 1<sup>st</sup> was PV + LED (two parts of dimming area: 3 hours and 6 hours). The second was only PV, and the last was a reference for comparison of yield (control plot). We transplanted uniform seedlings of green onions on three areas of the farm on June 23, 2020. We used red LED lighting for 3 hours and 6 hours after sunset and harvested green onions on October 25, 2020. We used less than 1% of electricity of total power generated by the agrovoltaic system for supplemental LED lighting.Results: The result of harvesting under the agrovoltaic system with 3 hours of lighting showed that there was 38% more yield than the control plot. We also discovered the optimal amount of supplemental LED lighting because even 6 hours of lighting were not better than 3 hours.Conclusion: Applying supplemental LED lighting after sunset can compensate for the yield decrease. The LED supplemental lighting for 3 hours is optimal for crop harvest. We expect that this system can be helpful to farmers who want to construct an agrovoltaic system.

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Section: Discussionmentioning

confidence: 99%

Growth and Agronomic Traits of Green Onion under the Agrovoltaic System with Red Supplemental LED Lighting

Kim

Suh

et al. 2023

J. People Plants Environ

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“…Mineral nutrient content in the bulbs of southern-type garlic (Allium sativum L.) grown for 265 days in different culture temperatures in a temperature gradient tunnel 온도구배터널 내 생육온도 상승에 따른 난지형 마늘의 지상부 생장, 인경 발달 및 무기성분 함량의 변화 고 찰 마늘의 인경 발달은 인편에서 맹아의 출현, 잎의 발달과 같은 초기 영양생장, 인경의 형성과 발달, 그리고 성숙 단계로 구분되 며(del Pozo and González, 2005), 각 단계에는 온도가 중요하게 작용한다. 인편으로부터 맹아의 출현은 온도에 민감하여 10°C에서는 100% 출현하는 데 반해 고온으로 갈수록 출현율이 저조하여 30°C에서는 75%로 감소하고, 출현율이 50%에 도 달하는 데 소요되는 시간도 온도가 증가할수록 늦어지는 것으로 보고된 바 있다(Moon et al, 2014). 또한, 마늘 재배 시 기후변 화 시나리오 RCP 4.5와 RCP 8.5를 적용하였을 때 기온이 상승하면 마늘의 파종 적기는 늦어지고 수확 적기는 빨라져 추후 100년 동안 재배기간이 50 -90일 정도 짧아질 수 있다고 한다(Park et al, 2018).본 연구에서도Fig.…”

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Shoot Growth, Bulb Development and Mineral Contents of Southern-type Garlic in Response to Elevated Temperatures in Temperature Gradient Tunnels

Oh¹,

Moon²,

Shin³

et al. 2020

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This study assessed shoot growth, bulb development, and mineral content of southern-type garlic (Allium sativum L.) in a temperature gradient tunnel (TGT), to examine effects of temperature increase. TGT temperatures in the middle and outlet were maintained at +3°C and +6°C higher, respectively, than ambient temperatures at the inlet. The germination of garlic cloves occurred at 19.2 days after sowing near the inlet, yet occurred at 23.5 and 25.0 days, respectively, in the middle and outlet. At ambient and +3°C temperatures, bulbs developed well, with clove size and shape large and uniform, resulting in a high-quality commodity with high post-harvest commercial value. In all temperatures, 7-8 cloves per bulb developed, but small secondary cloves developed from the cloves in the transverse sections of bulbs grown in the middle and outlet of the TGT. The surfaces of cloves showed a distinct purple color at ambient +3°C. In addition, at elevated temperatures, the Ca and Zn content in the cloves decreased, while the K and Fe content increased, indicating that the rising temperature affects mineral absorption of garlic. Implications of this study include possible delays to sowing time, and/or delayed harvest, as a response to climate change, to avoid irregular small-sized cloves caused by secondary growth in the bulb. The results of this study, therefore, are important to maintain the productivity and quality of garlic in the future, as it becomes necessary to mitigate impacts of elevated temperature at each stage of growth.

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A Simple Emergence Model of Southern Type Garlic Based on Temperature

Cited by 2 publications

References 11 publications

Growth and Agronomic Traits of Green Onion under the Agrovoltaic System with Red Supplemental LED Lighting

Growth and Agronomic Traits of Green Onion under the Agrovoltaic System with Red Supplemental LED Lighting

Shoot Growth, Bulb Development and Mineral Contents of Southern-type Garlic in Response to Elevated Temperatures in Temperature Gradient Tunnels

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