Reflections on rainfall and wetness on leaves

Abstract

Water affects moat leaf fungal direares at some stage in their Ute-cycle. Estimates of leaf wetness persistence are important to epidemiology and method8 for providing routine astimatea are sought. In certain climates good relationship8 can br found between tha time that wetnera rtarts and its durationr but usually the situation is le8r predictable. Wetnear duration after rain is dominated by the amount of water held on leaves and the way that it is held (e.g. a8 discrete drops or as a film). The amount of water on the surface will depend not only on the amount of rain, but on the interception efficiency and leaf water holding capcity. These values depend on rainfall intensity and wind speed