Browse > Article
http://dx.doi.org/10.5351/KJAS.2020.36.6.763

A study on the estimation of onion's bulb weight using multi-level model  

Kim, Junki (Department of Agricultural Outlook, Korea Rural Economic Institute)
Choi, Seung-cheon (Department of Agricultural Outlook, Korea Rural Economic Institute)
Kim, Jaehwi (Department of Agricultural Outlook, Korea Rural Economic Institute)
Seo, Hong-Seok (Department of Agricultural Outlook, Korea Rural Economic Institute)
Publication Information
The Korean Journal of Applied Statistics / v.33, no.6, 2020 , pp. 763-776 More about this Journal
Abstract
Onions show severe volatility in production and price because crop conditions highly depend on the weather. The government has designated onions as a sensitive agricultural product, and prepared various measures to stabilize the supply and demand. First of all, preemptive and reliable information on predicting onion production is essential to implement appropriate and effective measures. This study aims to contribute to improving the accuracy of production forecasting by developing a model to estimate the final weight of onions bulb. For the analysis, multi-level model is used to reflect the hierarchical data characteristics consisting of above-ground growth data in individual units and meteorological data in parcel units. The result shows that as the number of leaf, stem diameter, and plant height in early May increase, the bulb weight increases. The amount of precipitation as well as the number of days beyond a certain temperature inhibiting carbon assimilation have negative effects on bulb weight, However, the daily range of temperature and more precipitation near the harvest season are statistically significant as positive effects. Also, it is confirmed that the fitness and explanatory power of the model is improved by considering the interaction terms between level-1 and level-2 variables.
Keywords
multi-level model; onion bulb weight; interaction effect; above-ground growth factor; meteorological factor;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
연도 인용수 순위
1 Ahn, S. R. and Suh, J. K. (2013). Effect of Different Day Length on the Production of Onion, Protected horticulture and Plant Factory, 22, 43-47.   DOI
2 Burstein, L. (1980). Chapter 4: The analysis of multilevel data in educational research and evaluation, Review of Research in Education, 8, 158-233.   DOI
3 Brewster, J. L. (1990). The influence of cultural and environmental factors on the time of maturity of bulb onion crops, Acta Horticulturae, 267, 289-296.   DOI
4 Choi, S. and Baek, J. (2016). Onion yield estimation using spatial panel regression model, The Korea Journal of Applied Statistics, 29, 873-885.   DOI
5 Cooley, W. W., Bond, L., and Mao, B. B. (1981). Analyzing multilevel data. In R A. Berk (Ed.), Educational Evaluation Methodology, Baltimore, MD: Johns Hopkins University Press.
6 Cronbach, L. J. and Webb, N. (1975). Between-class and within-class effects in a reported aptitude * treatment interaction: Reanalysis of a study by G. L. Anderson, Journal of Educational Psychology, 67, 717-724.   DOI
7 De Ruiter, J. M. (1986). The effects of temperature and photoperiod on onion bulb growth and development. Proceedings Agronomy Society of NZ, 16, 93-100.
8 Finch, W. H., Bolin, J. H., and Kelley, K. (2014). Multilevel Modeling Using R, CRC Press, Fl.
9 Huh, E. J., Cho, K. S., Kwon, Y. S., and Woo, J. G. (2002). Effects of temperature and photoperiod on bulbing and maturity of spring sown onions in highland, The Journal of Horticultural Science and Biotechnology , 43, 587-590.
10 Jung, I. (2019). Comparison of the prediction model of the production unit and the area of the onion-comparison of stepwise, LASSO, PCA and PLS methods (Master Thesis), Chonnam National University.
11 Kang, S. (2016). Multilevel Model, Hakjisa, 290-296.
12 Kim, D. J., Kim, S. O., Kim, J. H. and Yun, E. J. (2019). Establishment of Geospatial Schemes Based on Topo-Climatology for Farm-Specific Agrometeorological Information, Korean Journal of Agricultural and Forest Meteorology, 21, 146-157.   DOI
13 Lee, C. and Yang, S. B. (2017). Development of yield forecast models for onion and garlic using artificial neural network, Horticultural Science and Technology, 35, 128-129.
14 Robinson, W. S. (2009). Ecological Correlations and the Behavior of Individuals, International Journal of Epidemiology, 38, 337-341.   DOI
15 Lee, H. J., Lee, S. G., Kim, S. K., An, S., Lee, J. H., Lee, H. S., Kim, C. W., Kwon, Y. S., and Han, J. W. (2019). Effects of High-Temperature and Soil Moisture Conditions on the Physiological Response of Onion, Horticultural Science and Technology, 37, 571-578.   DOI
16 Lee, J. (2015). Onion: From one year old to organic and no-till cultivation method, deulnyeok.
17 Lee, S. I., Son, S., and Lee, H. (2020). An analysis of changes onion yields in Korea using panel regression analysis and Bayesian network model, Journal of Rural Development, 43, 1-28.   DOI
18 Lim, C. H., Kim, G. S., Lee, E. J., Heo, S., Kim, T., Kim, Y., and Lee, W. K. (2016). Development on crop yield forecasting model for major vegetable crops using meteorological information of main production area, Journal of Climate Change Research, 7, 199-203.
19 Riekels, J. W. (1972). The influence of nitrogen on the growth and maturity of onions grown on organic soil, Journal of the American Socoety for Horticultural Science, 97, 37-40.
20 Snijders, T. B. S. and Bosker, R. J. (2011). Multilevel Analysis: An Introduction to Basic and Advanced Multilevel Modeling, Sage Publishers, London.
21 Song, E. Y., Moon, K. H., Wi, S. H., Kim, C. H., Lim, C. K., Oh, S. J., and Son, I. C. (2017). Impact of Elevated Temperature in Growing Season on Growth and Bulb Development of Extremely Early-Maturing Onion, Korean Journal of Agricultural and Forest Meteorology, 19, 223-231.   DOI
22 Steer, B. T. (1980). The bulbing response to day-length and temperature of some Australasian cultivars of onion(Allium cepa L.), Australian Journal of Agricultural Research, 31, 511-518.   DOI
23 Henriksin, K. (1987). Effect of N- and P-fertilization on yield and harvest time in bulb onions (Allium cepaL.), Acta Horticulturae, 208, 207-215.   DOI
24 Cronbach, L. J. (1976). Research on classrooms and schools: Formulation of questions, design, and analysis,Occasional paper of the Stanford Evaluation Consortium.