Use 30% formalin diluted 300 times to dip the onion seeds for 3 hours. After dipping, wash them with clean water. Dry them and sow them. After breeding with bulbs, soak bulbs in warm water of 45°C for 90 minutes. After cooling out, cool it in the cold water, dry it, and plant it. This can kill the purple spot pathogen that the onion seeds carry.
The onion seeds are mixed with 50% Ketan Dan wettable powder or 50% hexachlorobenzene powder or 50% thiram wettable powder (optionally one of the above medicines) according to the ratio of 1:4 drug and species. It can prevent smut pathogens carried on onion seeds.
With bulbs, the onion bulbs were soaked in warm water at 43.5°C for 2 hours. Immediately after immersion, they were cooled with cold water, allowed to air-dry, and then planted to prevent stem nematode pathogens.
The onion seeds were soaked in 300-fold 40% formalin for 3 hours. After immersion, they were washed with water and allowed to dry. The bulbs were then sown in warm water at 45°C for 1.5 hours. Cooling in cold water, drying and planting can effectively kill the anthracnose and black spot pathogens carried by onion seeds.
The onion seeds were soaked in 50% warm water for 25 minutes. After soaking, they were placed in cold water to cool, dried after sowing, and sown on bulbs. Bulbs were soaked in warm water at 45°C for 90 minutes. After immersion, they were cooled in cold water. After drying and planting, the onychomycosis pathogens carried on onions can be eliminated.
Before sowing, garlic rot, dry rot, and leaf dryness can be killed by using a 1% 50% thiophanate-methyl powder of garlic powder or a 1% 50% carbendazim WP. Diseases and other germs.
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