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Anthrax is shown in Figure 1. Can be used with Daisen zinc 80% powder 600 times solution, or with 50% antibacterial powder 700 times solution or 25% carbendazim 500 times solution.
Tripping disease Incidence period: seedling stage.
Symptoms: As shown in Figure 2, at the beginning of the disease, the diseased seedlings were brown with water stains and the young leaves were dark green. In the later stage of the disease, the diseased seedlings appear to be boiled and scalded, and when the humidity is high, the surface of the diseased seedlings and the seedbed has white silk floc.
Control with 25% metalaxyl 1000 times solution or 70% dikesone powder 700 times solution.
Root black rot is controlled with 50% bacteriostatic 700 times solution or 50% methyl thiophanate powder 1000 times solution.
Insecticide control with 90% trichlorfon solid 500 times solution, 50% anti-carbohydrate powder 500 times solution.
Anti-algae control with copper oxide 15 g / seed bed, or copper sulfate 20 g / seed bed.
Pest control and algae control in the late floating seedling
The prevention and control of pests and diseases in flue-cured tobacco floating seedlings is mainly based on prevention, eliminating the source of disease and controlling the pathogenesis. After seriously doing all kinds of disinfection work before nursery, there will be no pests and diseases. If pests and diseases occur during the nursery process, the diseased plants should be removed in time, and other preventive agents should be sprayed with the control agents.
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