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 380165
Title Sensitivity analysis of leaf wetness duration within a potato canopy
Author(s) Jacobs, A.F.G.; Heusinkveld, B.G.; Kessel, G.J.T.; Holtslag, A.A.M.
Source Meteorological Applications 16 (2009)4. - ISSN 1350-4827 - p. 523 - 532.
Department(s) Meteorology and Air Quality
Biointeracties and Plant Health
Publication type Refereed Article in a scientific journal
Publication year 2009
Keyword(s) estimating dew duration - meteorological models - parameterization - field
Abstract A description and analysis is given of a wetness duration experiment, carried out in a potato field in the centre of the Netherlands in September 2005. The observations are used to design and evaluate a within-canopy dew model which provides the leaf wetness distribution within the canopy caused by dew processes and by precipitation. This withincanopy dew model consists of three layers (bottom, centre, top) each with equal contribution to the leaf area index. The model results compared favourably with experimental evidence. The sensitivity of the dew and precipitation interception on the amount of free water and the duration of the leaf wetness was analysed by varying the leaf area index and some important weather variables. The findings suggest that the leaf area index affects the amount of free water, but is barely sensitive to leaf wetness duration. Wind speed has hardly any effect on the amount of free water collection as well as on leaf wetness duration. The net radiation, however, appears to be sensitive to the amount of collected free water as well as the leaf wetness duration
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