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Any wheat crops at the susceptible growth stage (GS 53-59, ears emerged) must be monitored closely over the next 7 to 10 days. DO NOT apply Dursban* WG unless ears are emerged and thresholds met or exceeded.

Action: Use Risk Assessment Charts to identify fields at high risk and consider the use of traps at the most susceptible sites. These are typically wheat fields where the pest was noted last year, especially if no treatment was carried out. The economic risk is highest in crops intended for seed or milling. This is reflected in the lower threshold of one midge per 6 ears. The threshold for feed wheat is one midge per 3 ears.

Be prepared to apply Dursban* WG at 0.6 kg/ha in 200 to 1000 litres of water per hectare (leaving an unsprayed headland of at least 12 metres) if thresholds are met or exceeded and crops are at the susceptible GS 53-59 (ears emerged) growth stage.