Incidence of currant borer moth, Synanthedon tipuliformis, in blackcurrants in Tasmania

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Abstract
The incidence of the currant borer moth, Synanthedon tipuliformis (Clerck), in blackcurrant plantations in southern Tasmania was assessed by a survey in 1973. On individual properties the mean larval density ranged from nil to 1.1 larvae m-1 of branch, but on most properties the larval density was considerably less than the overall mean of 0.21 larvae m-1. The survey suggested that the incidence of the moth was highest in a more inland district and in flat and north facing blocks; further, incidence increased with decreasing altitude.

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