Potato acne is a major problem in production. Once it occurs, the yield and variety of potatoes are rapidly declining, which brings huge economic losses to farmers. Therefore, potato acne is seriously prevented, and it must be prevented from the beginning. Measures.
Potato scab is a bacterial disease; in the alkaline sandy loam soil, the tuber is prone to wounds when it grows; if the air humidity is low during the tuber growth period, the disease is severe.
Potato scab pathogens can be spoiled in the soil or overwinter on diseased potatoes, where the diseased potato is the primary source of primary infection. When flowering, the potato quickly enters the expansion stage of young fruit. The skin is young and easy to be invaded by the bacteria source. When it is swollen, it will form a lot of wounds when it is rubbed with the soil. Especially the sandy loam is more likely to scratch the potato pieces, and the bacteria will invade from the wound and then rapidly multiply. , spread, and then form a sore face.
Potato sore plague must be prepared in advance to prevent losses to a minimum; do not wait until the disease is remembered should be prevented in advance, the loss is heavy, regretful.
For the areas where we have not started planting potatoes, we have to do the precautions:
(1) When the bottom fertilizer is applied, the application of the O'Nonnemus microbial agent (which can be mixed with organic fertilizer, farmyard manure, and chemical fertilizer) is used at 50-60 kg per mu, which can be applied by acupoints, ditch, or spread. turn).
(2) When the next species is used, the planting ditch is sprayed with 150-300 times of the green clinking + 150-300 times of the ground force, and the liquid is sprayed at the seeding to achieve the function of disinfecting and repairing the wound;
(3) Seedling stage, use 150-300 times of green dry gram + 500 times of ground force + 600 times spray of Wofengsu;
(4) During the bud period (or 60 days after the next species), foliar spray can be carried out with 150-300 times of green lycopene + 1000 times of garlic oil + 600 times of von Fengsu, and drip irrigation or flushing can be carried out at the same time;
(5) 3. Drip irrigation or flushing when the number of flowering accounts for 1/3. Foliar spray can be carried out at the same time with green dry gram 150-300 times + 300-500 times + 60 times of Wofengsu, drip irrigation or flushing. If you wait until after the Xiehua, the potatoes will have entered the expansion period and grow to the size of the goose eggs. The bacteria have invaded and it is difficult to control in the later stage. The Chinese herbal preparation can directly kill the eubacteria hidden in the potato plant, and can transmit the active ingredient absorbed by the leaf surface to the root system, and can rejuvenate while sterilizing. The potatoes grow well, the skin is thick, the disease resistance is strong, and it is not easy to suffer from scab and other common diseases.
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