What kind of pesticides are used in garlic white rot
Garlic is a common plant in life, almost every family will use it every day, and some like to grow some on the balcony, and during the planting of garlic, there will be white rot phenomenon, which pesticide is used for garlic white rot?
What pesticides are used for garlic white rot?
Garlic white rot can be controlled by carbendazim, thiophanate methyl, garlic leaf green and other pesticides. The specific method is to spray and control with 50% carbendazim wettable powder 500 times per mu or 50% thiophanate methyl wettable powder 600 times per mu. The rhizome can also be irrigated with 1000-1500 times liquid of 75% garlic leaf green wettable powder, sprinkled once every 7-10 days, and can be effectively prevented and treated twice continuously.
What are the symptoms of garlic white rot?
Garlic white rot is mainly harmful to leaves, leaf sheaths and bulbs. Leaf disease, the outer leaf tip yellowing, gradually developing to the leaf sheath, inner leaf, the whole plant yellowed and died in the later stage, often causing death in the field. Bulb disease, the epidermis of the disease showed water-immersed disease spots, long gray-white mycelium layer, the disease part showed white rot, and produced small black sclerotia, bulbs blackened and rotted. The underground part near the fibrous root occurs first, the disease part is moist, and then develops upward and produces a large number of white hyphae. Garlic white rot occurs seriously in winter and spring, with a disease rate of 10% to 20%, and serious fields as high as 35%.
Third, how to prevent and cure garlic white rot?
1. Seed treatment: garlic seeds are treated with 50% methyl thiophanate wettable powder or 50% carbendazim wettable powder before sowing. The specific method is: 0.5 kg of medicine is mixed with 3-5 kg of water, 50 kg of garlic seeds are mixed well, and the seeds are sown after drying.
2. Crop rotation: as the continuous cropping field is prone to disease, the continuous cropping field and non-garlic crop rotation for 3 or 4 times can effectively prevent and control the disease, and the control effect can reach more than 90%.
3. Field management: topdressing and raising seedlings in early spring, loosening the soil, draining and reducing waterlogging, promoting the growth of garlic, improving disease resistance, digging up and burning diseased plants in time, and strictly forbidding retting fertilizer to prevent bacteria from being brought back into the field.
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