Armando Bergamin Filho

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The publication hereafter referred to as Er et al. (Er et al. 2013) conflicts with worldwide observations that citrus black spot (CBS) caused by Phyllosticta citricarpa occurs exclusively in climates with summer rainfall, i.e., high temperatures accompanied by high moisture levels. Surprisingly, Er et al. predict that dry Mediterranean climatic conditions,(More)
In some epidemics that have devastating consequences, the primary inoculum plays an important role in both epidemic onset and intensification. This article documents the dynamics of such epidemics, and illustrates their importance using two examples: Huanglongbing of citrus and begomoviruses of tomato. The latter disease is a major constraint to tomato(More)
Six field experiments were carried out during the summers of 1997 to 2003 to evaluate disease progress of soybean brown spot caused by Septoria glycines considering two tillage systems, conventional and no-tillage (wheat was cultivated during winter in all plots). Two logistic models were fitted to the disease progress data: (i) a logistic model with(More)
Here, we report for the first time the complete molecular characterization of a begomovirus infecting tomato crops in Espírito Santo state, Brazil. Based on the analysis of partial nucleotide sequences of isolates obtained from 20 samples, collected from 2007 to 2011, all isolates were preliminary classified as Tomato commom mosaic virus (ToCmMV). Complete(More)
Muitas são as defi nições de epidemiologia que aparecem na literatura. Nenhuma é tão simples quanto à de Vanderplank (1963), para quem epidemiologia é apenas " a ciência da doença em populações " , e nenhuma é tão completa quanto à de Kranz (1974), para quem a epidemiologia é " o estudo de populações de patógenos em populações de hospedeiros e da doença(More)
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