Choose healthy seeds first. In the case of planting, in the case of shopping, we try to find the kind that is healthier, looks round and has no disease. After planting such seeds, it will reduce the chances of some pests and diseases. Then after planting, strengthen their daily management methods.
Finally, drugs are still used to prevent it, but it must be noted that the drugs used should be changed frequently to prevent antibodies from being produced. Generally, in the early stage of garlic leaf blight, its leaves will gradually wither or become turbid. So if this situation is found, it can be treated with mancozeb wettable powder, an aqueous solution mixed with acetamiprid and chlorpheniramine. In the case of virus disease, the color of leaves will change slowly. Therefore, after testing, it can be prevented by using 500 times solution of virus infection or hydroxyl chain protein wettable powder.
During the picking period, it is necessary to do a good job of supervision. The temperature should be controlled at 6-8 degrees, the environmental humidity is 85%, and the stored holes should be steamed with12g sulfur powder for a whole day. In the process of picking, you can't pick when the underground temperature is high. 8 days before picking, spraying thiophanate-methyl suspension. If you want to improve the resistance of plants, you can spray a lot of immune system drugs from plant cells one week before picking. If the human immune system is strong, the reproduction of virus infection will be inhibited.
Garlic root rot is mainly caused by some underground pests, such as garlic maggots, grubs, cutworms and root mites. Preventive measures can be solved by seed dressing before sowing, and if there are preventive measures, the roots can be irrigated with phoxim. The sowing date should be as early as possible, from late August to early September, which can not only reach the suitable temperature for seed identification and germination (16-20℃), but also reach 5-7 leaves before the overwintering period, which can safely overwinter.
In the same soil layer, I suggest that it is best to carry out rotation planting, which can prevent the lack of fertilizer efficiency in the soil layer, and they can grow and develop faster when the soil organic matter is more comprehensive. It is more beneficial to their growth and development to add some fertilized organic fertilizer at ordinary times. Moreover, it is necessary to plant them effectively, control their relative density, and immediately dig ditches and drain pipes to reduce their temperature to ensure their healthy growth and development.