Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 370766
Title Diffuse greenhouse covering materials material technology, measurements and evaluation of optical properties
Author(s) Hemming, S.; Mohammadkhani, V.; Dueck, T.A.
Source In: International Workshop on Greenhouse Environmental Control and Crop Production in Semi-Arid Regions. - Leuven : ISHS - ISBN 9789066055810 - p. 469 - 476.
Event Leuven : ISHS - ISBN 9789066055810 International Workshop on Greenhouse Environmental Control and Crop Production in Semi-Arid Regions, 2008-10-20/2008-10-24
DOI https://doi.org/10.17660/ActaHortic.2008.797.68
Department(s) Wageningen UR Greenhouse Horticulture
Publication type Contribution in proceedings
Publication year 2008
Abstract At high irradiation levels, diffuse greenhouse coverings result in better light distribution, lower crop temperature, decreased transpiration, and increased photosynthesis and growth. Various greenhouse coverings (plastic films, glass panes and temporal coatings) can be used to transform direct light into diffuse light. However, light diffusing properties of materials are hardly known. Optical properties of a wide range of materials are being currently investigated, including direct light transmission under different angles of incidence, transmission for hemispherical light and haze. The potential of diffusing greenhouse covering materials is estimated by analyzing the global radiation data for different climatic regions: marine winter climate (The Netherlands), Mediterranean mild winter climate (Italy) and semi-arid climate (Arizona). The required optical properties differ for the various climates. With modern material technology, the optical properties (haze and light transmission) can be altered to meet the requirements for different climatic regions in order to optimize crop performance in the future.
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