Abstract
Abstract Difficulties in controlling the grapevine borer pest fig longicorn, Acalolepta vastator, were experienced. Variable results with azinphos‐methyl, chlorpyrifos and methidathion applied as seasonal sprays at 2‐weekly or monthly intervals, coupled with inconsistent grower spraying practices, provided unreliable control. Pest resurgence resulted in a range of new chemicals and usage strategies being tested to overcome the problem. After extensive trialling an effective strategy for control of A. vastator was developed. This involved a single application of insecticide at dormancy, and after vineyard pruning, at a much higher rate than that normally registered for crop use. Bifenthrin (Talstar 100 EC) at 1000 mL/100 L, fipronil (Regent 200 SC) at 100 mL/100 L and imidacloprid (Confidor 350 SC) at 200 mL/100 L controlled emerging adults and young. This strategy overcomes a number of problems experienced with the previous chemical application method for this pest.
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