Measurement of evapotranspiration rate in a single-span greenhouse using the energy-balance equation

T. Takakura, Chieri Kubota, S. Sase, M. Hayashi, M. Ishii, K. Takayama, H. Nishina, K. Kurata, Gene A Giacomelli

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The energy-balance equation was used to estimate evapotranspiration in a greenhouse, and an instrument was developed to collect data for this purpose. The values estimated by this method were in good agreement with the measured data. It was shown that the net solar radiation term was the largest and cannot be neglected, and that long-wave radiation exchange had a relatively small effect. As usual, soil heat flux can be neglected but the sensible heat transfer term cannot be neglected since the maximum of the possible range of values is large and significant. It was concluded that the method used was simple and suitable for irrigation control in greenhouses. It was also concluded that normal radiation sensor measurements on a horizontal surface are not adequate for measuring radiation received by a plant canopy in a single-span greenhouse.

Original languageEnglish (US)
Pages (from-to)298-304
Number of pages7
JournalBiosystems Engineering
Volume102
Issue number3
DOIs
StatePublished - Mar 2009

Fingerprint

Evapotranspiration
Greenhouses
Energy balance
energy balance
evapotranspiration
Radiation
greenhouses
longwave radiation
heat flux
heat transfer
solar radiation
Hot Temperature
canopy
irrigation
sensor
Solar radiation
Irrigation
irrigation management
sensors (equipment)
Heat flux

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Food Science
  • Animal Science and Zoology
  • Soil Science
  • Control and Systems Engineering

Cite this

Measurement of evapotranspiration rate in a single-span greenhouse using the energy-balance equation. / Takakura, T.; Kubota, Chieri; Sase, S.; Hayashi, M.; Ishii, M.; Takayama, K.; Nishina, H.; Kurata, K.; Giacomelli, Gene A.

In: Biosystems Engineering, Vol. 102, No. 3, 03.2009, p. 298-304.

Research output: Contribution to journalArticle

Takakura, T. ; Kubota, Chieri ; Sase, S. ; Hayashi, M. ; Ishii, M. ; Takayama, K. ; Nishina, H. ; Kurata, K. ; Giacomelli, Gene A. / Measurement of evapotranspiration rate in a single-span greenhouse using the energy-balance equation. In: Biosystems Engineering. 2009 ; Vol. 102, No. 3. pp. 298-304.
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