Advanced search

PAR scattering by greenhouse covers and its effect on plant growth

Ivan Pollet (UGent) , P Eyskens and Jan Pieters (UGent)
(2000) Acta Horticulturae. 534. p.101-108
Author
Organization
Abstract
The forward scattering properties of dry and condensate covered standard glass and ordinary polyethylene (PE) were determined by means of a laboratory measuring unit. This unit consisted mainly of a cold box / hot box system equipped with a radiation source and a goniophotometer. The experiments revealed that scattering by dry glass was negligible, in contrast to dry PE which scattered 47% of the transmitted radiation. When covered with condensate, 81 and 78% of the radiation transmitted by glass and PE, respectively, was scattered. To assess the scattering effects on plant growth, net photosynthesis rates were calculated for a tomato crop by means of a simplified model. Depending on the parameter values, condensate on glass enhanced the tomato plant photosynthesis rate by at most 13 to 27% compared with the dry state. This positive effect was partly counteracted by the lower radiation quantity available to the plants. The occurrence of condensate on ordinary PE, however, reduced the net photosynthesis rate by at least 3 to 6% due to considerably lower available radiation quantities. In all cases, higher plant growth rates were found under dry and wet ordinary PE than under dry glass.
Keywords
condensation, photosynthesis, cladding material, diffusion, radiation, light, CLADDING MATERIALS, TRANSMISSION

Citation

Please use this url to cite or link to this publication:

Chicago
Pollet, Ivan, P Eyskens, and Jan Pieters. 2000. “PAR Scattering by Greenhouse Covers and Its Effect on Plant Growth.” In Acta Horticulturae, ed. BJ Bailey and M Teitel, 534:101–108. Leuven, Belgium: International Society for Horticultural Science (ISHS).
APA
Pollet, Ivan, Eyskens, P., & Pieters, J. (2000). PAR scattering by greenhouse covers and its effect on plant growth. In B. Bailey & M. Teitel (Eds.), Acta Horticulturae (Vol. 534, pp. 101–108). Presented at the International conference and British-Israeli workshop on Greenhouse Techniques Towards the 3rd Millennium, Leuven, Belgium: International Society for Horticultural Science (ISHS).
Vancouver
1.
Pollet I, Eyskens P, Pieters J. PAR scattering by greenhouse covers and its effect on plant growth. In: Bailey B, Teitel M, editors. Acta Horticulturae. Leuven, Belgium: International Society for Horticultural Science (ISHS); 2000. p. 101–8.
MLA
Pollet, Ivan, P Eyskens, and Jan Pieters. “PAR Scattering by Greenhouse Covers and Its Effect on Plant Growth.” Acta Horticulturae. Ed. BJ Bailey & M Teitel. Vol. 534. Leuven, Belgium: International Society for Horticultural Science (ISHS), 2000. 101–108. Print.
@inproceedings{401273,
  abstract     = {The forward scattering properties of dry and condensate covered standard glass and ordinary polyethylene (PE) were determined by means of a laboratory measuring unit. This unit consisted mainly of a cold box / hot box system equipped with a radiation source and a goniophotometer. The experiments revealed that scattering by dry glass was negligible, in contrast to dry PE which scattered 47\% of the transmitted radiation. When covered with condensate, 81 and 78\% of the radiation transmitted by glass and PE, respectively, was scattered. To assess the scattering effects on plant growth, net photosynthesis rates were calculated for a tomato crop by means of a simplified model. Depending on the parameter values, condensate on glass enhanced the tomato plant photosynthesis rate by at most 13 to 27\% compared with the dry state. This positive effect was partly counteracted by the lower radiation quantity available to the plants. The occurrence of condensate on ordinary PE, however, reduced the net photosynthesis rate by at least 3 to 6\% due to considerably lower available radiation quantities. In all cases, higher plant growth rates were found under dry and wet ordinary PE than under dry glass.},
  author       = {Pollet, Ivan and Eyskens, P and Pieters, Jan},
  booktitle    = {Acta Horticulturae},
  editor       = {Bailey, BJ and Teitel, M},
  isbn         = {9789066059528},
  issn         = {0567-7572},
  keyword      = {condensation,photosynthesis,cladding material,diffusion,radiation,light,CLADDING MATERIALS,TRANSMISSION},
  language     = {eng},
  location     = {Haifa, Israel},
  pages        = {101--108},
  publisher    = {International Society for Horticultural Science (ISHS)},
  title        = {PAR scattering by greenhouse covers and its effect on plant growth},
  url          = {http://www.actahort.org/books/534/534\_10.htm},
  volume       = {534},
  year         = {2000},
}

Web of Science
Times cited: