The cauliflower diamondback moth mainly harms crucifer crops. The larvae are 10-12 mm in length; the adults are 6-7 mm in length and 12-15 mm in wingspan. Two peak periods occur each year, which are April-May (Spring Peak) and August-August (Autumn Peak). Adults can migrate short distances, and are prone to occur at 20-30°C.
The larvae use 200 times Bt emulsion, or 5% CPT, and the hatching period of eggs uses 5% Ruijinte suspension agent 17ml-34ml per 667 square meters, add water 50L-75L, or 5% thioglycone EC 2000 times, or larvae were sprayed with 1.8% avermectin EC 3000x before 2nd instar. The above medicines should be rotated and used interchangeably. Never use a single pesticide for continuous use.
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