First, the identification of common diseases
1, tripping disease commonly known as "small ankle" only occurs in the seedling stage. At first, the water-soaked lesions appeared at the base of the stem of the seedlings, and then gradually changed to yellow, and the diseased part collapsed into a line. After a small amount of seedlings are infected, the germs spread to the surrounding area, causing the seedlings to fall. When the seedbed is humid, the white mold is easily produced in the diseased part and the soil, and the diseased part is often stuck with soil.
2, the blight disease is also known as the dead seedling disease, the seedlings in the middle and late stages of the disease. The base of the damaged seedlings produces elliptical dark brown lesions, and the early diseased seedlings are wilting during the day and can be restored at night. When the condition is serious, the lesions gradually sag, causing the seedlings to die but not to fall. The diseased part has a concentric pattern and does not grow white cotton-like mildew, which is the main feature distinguishing from the disease.
3, the root sputum symptoms are not new roots after the young stems are unearthed, the leaves are light and yellow, the leaves are wilting, the leaves are dry and the roots are rusted and rotten, and the whole plant is easy to pull up.
4, late blight seedlings cotyledon disease appear water-immersed dark green lesions, the edge of the obvious mildew layer, the disease spread rapidly spread to the main stem, making the stem thin and dark brown, causing the whole plant wilting or folding, When the humidity is high, sparse white mold is produced on the surface of the diseased part.
Second, the comprehensive prevention and treatment of diseases
1. Set the seedbed reasonably. The seedbed should be built in a place with high terrain, ventilated sun and good drainage. The soil of the bed should be selected from the large field soil of the former eggplant. It is best to use the onion and garlic as the onion. If the old bed soil is used, it should be disinfected. Before the sowing, the bed soil should be fully turned and the organic fertilizer should be fully decomposed.
2. Strengthen seedbed management. Fruit and vegetable seedbeds should be kept warm to prevent cold wind or low temperature attack, and the bed temperature during the day should not be lower than 20 °C. In case of low temperature in the cloudy day, the soil can be dehumidified and warmed to promote root growth, and then turn fine after the yin, to strengthen ventilation. The diseased plants were found to be immediately removed and sprinkled with fine dry soil or ash.
3. Bed soil treatment. Seedlings are planted in the old seedbed, and the bed soil should be disinfected. The bed soil was loosened 15 days before sowing, and the 1 m2 seedbed was treated with formalin 120 ml and water 3-9 kg (the amount of water was determined according to the dry humidity of the seedbed). After the application, the film was covered with a film cover for 4-5 days, and then 10 days later. Wait until the liquid medicine is fully used for sowing; or use 10% carbendazim wettable powder 10g or 70% methyl thiophanate wettable powder 10g for 1m2 seedbed, add 1kg of fine dry soil and mix well, and cover the top cover when sowing (1/ 3 for paddy soil, 2/3 for cover soil); 1m2 seedbed with 70% dikesone powder 10g mixed with fine dry soil 1kg ditch or hole after planting.
4. Seed treatment before sowing. Soak seeds with warm water at 50 ° C -55 ° C for 10-15 minutes, or 0.3% potassium permanganate for 20-30 minutes, or use 50% carbendazim wettable powder, 65% mancozeb wettable powder for seed dressing, The dosage is 0.3% of the seed quality.
5, chemical control. The squatting disease can be controlled by 50% of the metalaxyl MnZn wettable powder 500 times solution or 72.2% Plex water agent 600 times liquid spray, and the blight can be used 70% methyl thiophanate WP 1000 times liquid or 5%. Jinggangmycin water agent 1500 times liquid prevention and control, when mixed with two diseases, 50% Fumei double wettable powder 800 times liquid plus 80% spray wettable powder 600 times liquid prevention. Spray once every 7-10 days, depending on the condition, you can prevent 2-3 times. If the humidity is too large, you can also use 20% of the seedlings WP WP 30g and mix the dry soil 4-5kg, and choose to spread it evenly on the seedbed at noon on sunny days. The effect is ideal. Late blight can be controlled with 58% Rydmir WP 500 times solution and 72% DuPont gram lot 600 times solution. Spray once every 7-10 days, depending on the condition, you can prevent 2-3 times.
Stainless Steel 0.30ml/rev Gear Pump
Metering and dosing pump,pressurisation pump,No pulse transmission pump
Suzhou Macxi Fluid Technology Co.,Ltd. , https://www.macxipump.com