Lancaster EPrints

The Use of Wavelength-selective Plastic Cladding Materials in Horticulture: Understanding of Crop and Fungal Responses Through the Assessment of Biological Spectral Weighting Functions.

Paul, Nigel D. and Jacobson, Rob J. and Taylor, Anna and Wargent, Jason J. and Moore, Jason P. (2005) The Use of Wavelength-selective Plastic Cladding Materials in Horticulture: Understanding of Crop and Fungal Responses Through the Assessment of Biological Spectral Weighting Functions. Photochemistry and Photobiology, 81 (5). pp. 1052-1060. ISSN 0031-8655

Full text not available from this repository.

Abstract

Plant responses to light spectral quality can be exploited to deliver a range of agronomically desirable end points in protected crops. This can be achieved using plastics with specific spectral properties as crop covers. We have studied the responses of a range of crops to plastics that have either (a) increased transmission of UV compared with standard horticultural covers, (b) decreased transmission of UV or (c) increased the ratio of red (R) : far-red (FR) radiation. Both the UV-transparent and R : FR increasing films reduced leaf area and biomass, offering potential alternatives to chemical growth regulators. The UV-opaque film increased growth, but while this may be useful in some crops, there were tradeoffs with elements of quality, such as pigmentation and taste. UV manipulation may also influence disease control. Increasing UV inhibited not only the pathogenic fungus Botrytis cinerea but also the disease biocontrol agent Trichoderma harzianum. Unlike B. cinerea, T. harzianum was highly sensitive to UV-A radiation. These fungal responses and those for plant growth in the growth room and the field under different plastics are analyzed in terms of alternative biological spectral weighting functions (BSWF). The role of BSWF in assessing general patterns of response to UV modification in horticulture is also discussed.

Item Type: Article
Journal or Publication Title: Photochemistry and Photobiology
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
Faculty of Science and Technology > Engineering
ID Code: 9568
Deposited By: Jason Wargent
Deposited On: 16 Jun 2008 11:51
Refereed?: Yes
Published?: Published
Last Modified: 06 Sep 2013 21:24
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9568

Actions (login required)

View Item