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http://dx.doi.org/10.12791/KSBEC.2017.26.1.13

Growth and Fresh Bulb Weight Model in Harvest Time of Southern Type Garlic Var. 'Namdo' based on Temperature  

Wi, Seung Hwan (Research Institute of Climate Change and Agriculture, National Institute of Horticultural & Herbal Science)
Moon, Kyung Hwan (Research Institute of Climate Change and Agriculture, National Institute of Horticultural & Herbal Science)
Song, Eun Young (Research Institute of Climate Change and Agriculture, National Institute of Horticultural & Herbal Science)
Son, In Chang (Research Institute of Climate Change and Agriculture, National Institute of Horticultural & Herbal Science)
Oh, Soon Ja (Research Institute of Climate Change and Agriculture, National Institute of Horticultural & Herbal Science)
Cho, Young Yeol (Major of Horticultural Science Jeju National University)
Publication Information
Journal of Bio-Environment Control / v.26, no.1, 2017 , pp. 13-18 More about this Journal
Abstract
This study was conducted to investigate optimal temperature of garlic and develop bulb weight model in harvest time. Day and night temperature in chambers was set to $11/7^{\circ}C$, $14/10^{\circ}C$, $17/12^{\circ}C$, $20/15^{\circ}C$, $23/18^{\circ}C$, $28/23^{\circ}C$(16/8h). Bulb fresh and dry weight was heaviest on $20/15^{\circ}C$. In $11/7^{\circ}C$ and $14/10^{\circ}C$, leaf number and total leaf area increased slowly. But in the harvest, leaf number and total leaf area were not significant, except $28/23^{\circ}C$. Models were developed with fresh bulb weight. As a result of analyzing the model, $18{\sim}20^{\circ}C$ certified optimal mean temperature. And the growing degree day base temperature estimated $7.1^{\circ}C$, upper temperature threshold estimated $31.7^{\circ}C$. To verify the model, mean temperature on temperature gradient tunnel applied to the growth rate model. Lineal function model, quadric model, and logistic distribution model showed 79.0~95.0%, 77.2~92.3% and 85.0~95.8% accuracy, respectively. Logistic distribution model has the highest accuracy and good for explaining moderate temperature, growing degree day base temperature and upper temperature threshold.
Keywords
bulb weight; garlic; model; temperature;
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Times Cited By KSCI : 1  (Citation Analysis)
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