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Classification and Control of Vegetable Diseases and Pests
Distinction between ticks and viral diseases Apes are generally parasitic on the back of vegetables. The leaves of the affected young leaves are rolled down, the leaves become smaller and darker, the texture becomes harder, thicker and brittle, and the plants grow poorly. When the virus disease damages, the young leaves of the affected young leaves generally roll upwards, showing malformation, pale leaves, and bright veins. Prevention and treatment: After confirming that the vegetables are damaged by fleas, 73% of Kezi EC can be used for 400-500 mg/L, 5% of stuck Ke EC 667-1000 mg/L, and 0.9% of BASF 250-Soluble Aqueous Agent 250~ 333 mg/L solution spray control. After confirming that it is a virus disease, it can use 20% of the virus A WP 1000 mg/L plus crust 3333 mg/L, 0.5% of the disease on the basis of pest control (such as aphids, whitefly, etc.) disease prevention. Emulsion 1000 mg/L plus Kang Debao Nutrients 1000~1667 mg/L Solution Spray Control. The differentiation of nematodes and blight and wilt disease between bacterial wilt, wilt disease, and nematodes can cause wilting of the damaged vegetable plants, but the former two are all infectious diseases. After the plants are victimized, the vascular bundle gradually turns brown, and the vegetative bundles are wilted at the early stage of the damage. , return to normal sooner or later, and continue to slump late. The disease stem was cut and placed in a transparent glass filled with clear water. If there was bacterial wilt that overflowed with mucus, it was blight if no mucus overflowed and the leaves of the lower part of the plant turned yellow. In the early stages of nematode infestation, the above-ground plants grew poorly. The leaves were smaller than those of normal plants, and the roots of the roots were reduced. Some nematodes could form "bead-like" nematodes on the root; some nematodes were found at the junction of the main and lateral roots. Cortical foraging caused damage to cortical tissue. Prevention and treatment: Severe diseases such as cucumbers, watermelons, etc., which occur with wilt disease, can be prevented by grafting with black-skinned squash and vegetable gourds. After the onset of bacterial wilt, we should use 77% of WP or 25% of WPWP 1667-2500 mg/L solution on the basis of reducing the humidity in the field and avoid flooding. 200 grams of medicine. Nematodes can be controlled with 10% line of defense (green collection).