Prevention and control of diseases and insect pests of Pinellia ternata
(1) Root rot: this disease is easy to occur in high temperature season and stagnant water in the field. After the disease, the underground tuber rotted, and the shoot immediately fell to death. The prevention and treatment therapy mainly pays attention to drainage, pulling out the diseased plants and treating the diseased holes or watering the roots with 5% lime water, or soaking the seeds with 0.5% Mel 2% lime water for 12 hours for 30 hours.
(2) virus disease: the specific manifestations are shrinking leaves and mosaics, which mostly occur in spring and summer. After the disease occurs, the diseased plants should be removed and burned and disinfected with lime.
(3) Red diamondback moth: the larvae are harmful to the leaves, which often occur after May. It can be sprayed with stomach poisons such as trichlorfon or killed artificially.
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Pest control: diseases and insect pests of Flos Lonicerae and their control
Anthracnose often occurs in summer, which can be perfused with 500-1000-fold dilution of diexamethasone powder. Rust, spray with 200 / 250 times of diazepam sodium (50kg / 100g washing powder can be added to 50kg liquid as stain). Insect pests include aphids, longicorn beetles, etc., aphids can be sprayed with 4000 times of imidacloprid, and longicorn beetles can be sprayed and killed. However, it should be noted that the use of toxic pesticides is strictly prohibited in the budding stage of Flos Lonicerae.
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Codonopsis pilosula pest: grub
It belongs to Coleoptera, Scarabidae. It is the larva of the beetle, which is mainly active in the soil and harms the root of Codonopsis pilosula. Grubs usually occur one generation a year, and larvae or adults survive the winter in the soil. When the temperature rises in the following spring, the grub gradually moves to the top of the soil. When the soil temperature is above 15 ℃, the grub feeds on the topsoil above 10cm. When the temperature rises and the soil is dry in summer, it goes down to the deep layer of the soil. In autumn, it returned to the topsoil layer, and after October, it dived into the soil layer below 30cm to spend the winter.
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