Abstract
AbstractThe phenology of Epithrix hirtipennis (Mels.), a new pest of tobacco in Greece, was studied in the Agrinio area in western Greece. Sampling started from the seedbed and continued, after transplanting, in two plots of which one was sprayed and the other remained untreated.Overwintering adults appeared from the seedbed and then continued feeding in the plots. Their populations decreased towards the end of May and beginning of June while a second peak, of the first generation adults, was observed at the end of June.Lower adult‐population densities were found in the treated plot than in the untreated plot but in both plots, the adult population fluctuated in a similar way. Significant differences were found in the number of holes caused by adult feeding and the percentage of damage between the two plots and, in one case, in the population density.Multiple regression analysis always showed a good relationship between the number of holes, population density and percentage of damage.
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