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Estimation Model of the Change in Dairy Leaf Surface Temperature Using Scaling Technique

  • Eom, Ki-Cheol ;
  • Eom, Ho-Yong
  • Received : 2013.09.27
  • Accepted : 2013.10.02
  • Published : 2013.10.31

Abstract

This study was conducted to develop a model to estimate crop leaf surface temperature. The results were as following; A definition for the daily time based on elapsed time from the midnight (00:00) as "E&E time" with the unit of Kmin. was suggested. The model to estimate the scaled temperature ($T^*e$) of crop leaf surface temperature by scale factor ($T^*$) according to the "E&E time : Kmin."(X) was developed as eq. (1) $T^*e=0.5{\cdot}sin(X+780)+0.5$ (2) $T^*=(Tx-Tn)/(Tm-Tn)$, Tx : Daily leaf temperature, Tm : Daily maximum leaf temperature, Tn : Daily minimum leaf temperature. Relative sensitivity of the measured temperature compared to the estimated temperature of red pepper, soybean and persimmon was 1.078, 1.033 and 0.973, respectively.

Keywords

Leaf surface temperature;Scaling technique;Relative sensitivity

References

  1. Eom, K.C., K.S. Ryu, and K.T. Um. 1988. Comparison of the measurement methods of soil water content. Korean J. Soil Sci. & Fert. 21:367-372.
  2. Eom, K.C., E.R. Son, and K.S. Ryu. 1990. Changes in evapotranspiration and soil water status to vinyl mulching. Korean J. Soil Sci. & Fert. 21:367-372.
  3. Eom, K.C., K.C. Song, K.S. Ryu, Y.K. Sonn, and S.E. Lee. 1995. Model equations to estimate the soil water characteristics curve using scaling factor. Korean J. Soil Sci. & Fert. 28:227-232.
  4. Eom, K.C. and K.R. Eom. 2008. Mathematics for agricultural sciences. Daewon Publishers, Korea, Seoul. 438-491 (In Korean).
  5. Hillel, D. and D.E. Erick. 1990. Scaling in soil physics : Principles and applications. Soil Science Society of America, Inc. Madison, Wisconsin, USA. 300-318.
  6. Lal, R. and Shukla M. 2004. principles of soil physics. Marcel Dekker, Inc. USA. 515-555.
  7. Mandel,J. 1964. The statistical analysis of experimental data. John Wiley & Sons, New York, 58-77, 363-389.
  8. Miller, E.E. and R.D. Miller. 1955a. Theory of capillary flow : I. Practical implications. Soil Sci. Soc. Am. Proc. 19:267-271. https://doi.org/10.2136/sssaj1955.03615995001900030005x
  9. Miller, E.E. and R.D. Miller. 1955b. Theory of capillary flow : II. Experimental information. Soil Sci. Soc. Am. Proc. 19:271-275. https://doi.org/10.2136/sssaj1955.03615995001900030006x
  10. Patricia, M.T. and D.R. Nielsen. 1984. Scale factors in soil science. Soil Sci. Soc. Am. J. 48:953-959 https://doi.org/10.2136/sssaj1984.03615995004800050001x
  11. Scott, H.D. 2000. Soil physics agricultural and environmental applications. Iowa State University Press. Ames. IA.

Cited by

  1. Relative Sensitivity Analysis of the Soil Water Characteristics Curve vol.48, pp.6, 2015, https://doi.org/10.7745/KJSSF.2015.48.6.712
  2. Daily Changes in Red-Pepper Leaf Surface Temperature with Air and Soil Surface Temperatures vol.47, pp.5, 2014, https://doi.org/10.7745/KJSSF.2014.47.5.345

Acknowledgement

Grant : Cooperative Research Program for Agriculture Science & Technology Development

Supported by : Rural Development Administration