Abstract
Almost 50% of the variation in leaf wetness duration can be explained by maximum and minimum temperatures, rainfall and hours with relative humidity above 90% on a daily basis. All of these parameters can be estimated from a standard weather station. If variables related to wind are added the level of explanation increases to 69–76%. Leaf wetness duration explained up to 42% of the rate of disease increase (RDI) forS. nodorum. Leaf wetness duration was accumulated over a 5-day ‘window’ period and correlated with rate of disease increase after a 7-day ‘lag’ period. Standard weather variables could explain 20–34% of the disease increase. The relevance of these statistical models to disease prediction is discussed.
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Djurle, A., Ekbom, B. & Yuen, J.E. The relationship of leaf wetness duration and disease progress of glume blotch, caused byStagonospora nodorum, in winter wheat to standard weather data. Eur J Plant Pathol 102, 9–20 (1996). https://doi.org/10.1007/BF01877111
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DOI: https://doi.org/10.1007/BF01877111