What are the main diseases during the seedling period of Sosuki fruit vegetables?
Bacterial damping-off and damping-off have always been the most threatening diseases in the fruiting period of tomato fruits, such as tomatoes, eggplants, and peppers. Failure to prevent and control them in time will cause severe death and affect yield and benefits.
First, the main symptoms
1. Fall-over disease is a fungal disease. From seed germination to seedling emergence of 3-4 true leaves during the period susceptible to disease, seedlings before the emergence of disease will lead to bad seedlings, seedlings after the emergence of the disease, the initial stage in the seedling stem base was watery lesions, after the rapid lesions The stalk is enlarged for 1 week, gradually reduced to a linear shape, softened and folded, and the young leaves remain green.
2. Blight, a fungal disease. Occurs in the middle and late stages of nursery. In the early stage of disease, an oval-shaped dark brown spot develops on the stem base of seedlings. The diseased seedlings are wilted during the day and return to normal at night. After that, the lesion gradually expands and the plant stands upright.
Second, control methods
1. Seed disinfection. Before sowing, the seeds were soaked in warm water of 55-60°C for 15 minutes, or they were soaked with agents such as 80% seed zinc, 50% thiram, and 50% carbendazim, which accounted for 0.3% of the seed weight.
2. Bed soil disinfection. If the seedbed continues to use the old bed, bed soil must be disinfected. If the damping-off disease is serious, 70% pentachloronitrobenzene can be mixed with 50% thiram or 80% dexamethasone, with 8 to 8 pounds of bed per square meter. 9 grams and 1 to 1.5 kilograms of fine dry soil mix well into poisonous soil; if the blight is serious, use 50% carbendazim or 50% thiophanates 5 grams and 1 kilogram fine dry soil to mix and make medicine soil. Before planting, soak 1 / 3 of the medicine on the bed, and sow 2/3 of the medicine soil over the seed.
3. Strengthen management. In the breeding period of Solanum edulis vegetables, it is vulnerable to adverse weather such as heavy rain, hot sun, etc., which results in thin and thin seedlings and decreased resistance to disease. It is necessary to strengthen management and protect against rain. Spraying 0.2% potassium dihydrogen phosphate, 0.1% calcium chloride, etc. at seedling stage can enhance disease resistance.
4. Spray control. Seedlings can be used at the beginning of the disease 72.2% Prokary water 400 times, 2 to 3 liters per square meter of spray liquid, 15% can also be used 15% Hymex Agent 450 times. When damping-off and damping-blight occur in a mixed manner, 72.2% Precloxone 800 times solution plus 50% thiram WP can be sprayed with 800 times, 2 to 3 liters per square meter, depending on the condition 7 to 10 days 1 time, continuous control 2 to 3 times.
First, the main symptoms
1. Fall-over disease is a fungal disease. From seed germination to seedling emergence of 3-4 true leaves during the period susceptible to disease, seedlings before the emergence of disease will lead to bad seedlings, seedlings after the emergence of the disease, the initial stage in the seedling stem base was watery lesions, after the rapid lesions The stalk is enlarged for 1 week, gradually reduced to a linear shape, softened and folded, and the young leaves remain green.
2. Blight, a fungal disease. Occurs in the middle and late stages of nursery. In the early stage of disease, an oval-shaped dark brown spot develops on the stem base of seedlings. The diseased seedlings are wilted during the day and return to normal at night. After that, the lesion gradually expands and the plant stands upright.
Second, control methods
1. Seed disinfection. Before sowing, the seeds were soaked in warm water of 55-60°C for 15 minutes, or they were soaked with agents such as 80% seed zinc, 50% thiram, and 50% carbendazim, which accounted for 0.3% of the seed weight.
2. Bed soil disinfection. If the seedbed continues to use the old bed, bed soil must be disinfected. If the damping-off disease is serious, 70% pentachloronitrobenzene can be mixed with 50% thiram or 80% dexamethasone, with 8 to 8 pounds of bed per square meter. 9 grams and 1 to 1.5 kilograms of fine dry soil mix well into poisonous soil; if the blight is serious, use 50% carbendazim or 50% thiophanates 5 grams and 1 kilogram fine dry soil to mix and make medicine soil. Before planting, soak 1 / 3 of the medicine on the bed, and sow 2/3 of the medicine soil over the seed.
3. Strengthen management. In the breeding period of Solanum edulis vegetables, it is vulnerable to adverse weather such as heavy rain, hot sun, etc., which results in thin and thin seedlings and decreased resistance to disease. It is necessary to strengthen management and protect against rain. Spraying 0.2% potassium dihydrogen phosphate, 0.1% calcium chloride, etc. at seedling stage can enhance disease resistance.
4. Spray control. Seedlings can be used at the beginning of the disease 72.2% Prokary water 400 times, 2 to 3 liters per square meter of spray liquid, 15% can also be used 15% Hymex Agent 450 times. When damping-off and damping-blight occur in a mixed manner, 72.2% Precloxone 800 times solution plus 50% thiram WP can be sprayed with 800 times, 2 to 3 liters per square meter, depending on the condition 7 to 10 days 1 time, continuous control 2 to 3 times.
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