How to prevent flower stalk rot
The stalk rot of seedlings is a disease caused by the fungus S. sclerotiorum. When the base of the seedling stems are burnt by high temperature in summer, the germs invade. If nurseries grow low, the incidence of seedlings increases significantly. The onset of the disease began 10-15 days after the end of the rainy season, after which the incidence increased gradually and the disease stopped in mid-September. The prevention and control methods are as follows: First, choose a nursery with a low groundwater level, a well-drained nursery, container seedlings, prepare soil with pathogen-free soil, and adhere to the rotation system. The second is to kill pathogens. Before the nursery, use dry leaves and hay to spread evenly on the seedbed, ignite and burn, or apply 25kg of lime powder or 15-20kg of ferrous sulfate powder per acre nursery. The third is to apply rotten fertilizer. Per-mu plant nursery cooked maturity of cattle cattle fecal 40-50 Tam. Basal ash is used as base fertilizer, 50-60 lbs per acre nursery, fertilizer effect is good, and the disease prevention effect is also good. The fourth is to improve the disease resistance of seedlings, timely cultivation, weeding, thinning, and topdressing. The seedlings were sprayed with 50-75 kg of Bordeaux mixture per acre nursery to form a protective film on the seedlings. After the onset, remove the diseased seedlings in time and sprinkle lime powder around the diseased seedlings.
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