Model to Enhance Site-Specific Estimation of Leaf Wetness Duration
نویسندگان
چکیده
منابع مشابه
Sensitivity analysis of leaf wetness duration within a potato canopy
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,...
متن کاملan evaluation and comparison of physical and empirical models for estimation of leaf wetness duration
leaf wetness duration (lwd) is a key parameter in agricultural meteorology. because of difficulties involved in lwd being readily measured, several methods have been developed to estimate it from weather data. among the employed to estimate lwd, those that use physical principles of dew formation plus dew and/or rain evaporation have shown to be especially transmittable and of sufficiently accu...
متن کاملPerformance of Cylindrical Leaf Wetness Duration Sensors in a Tropical Climate Condition
Leaf wetness duration (LWD) measurements are required for disease warning in several agricultural systems, since it is an important variable for the diagnose of plant disease epidemiology. The cylindrical sensor is an inexpensive and simple electronic LWD sensor initially designed to measure this variable for onions, however some studies show that it may be helpful for standard measurements in ...
متن کاملEffects of leaf wetness duration and temperature on infection of Prunus by Xanthomonas arboricola pv. pruni
Xanthomonas arboricola pv. pruni is the causal agent of bacterial spot disease of stone fruits and almond. The bacterium is distributed throughout the major stone-fruit-producing areas of the World and is considered a quarantine organism in the European Union according to the Council Directive 2000/29/EC, and by the European and Mediterranean Plant Protection Organization. The effect of leaf we...
متن کاملLeaf wetness within a lily canopy
A wetness duration experiment was carried out within a lily field situated adjacent to coastal dunes in the Netherlands. A within-canopy model was applied to simulate leaf wetness in three layers, with equal leaf area indices, within the canopy. This simulation model is an extension of an existing model. It appeared that in most cases leaf wetness started in the uppermost layer followed by the ...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2002
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pdis.2002.86.2.179