Aphids are the spreaders of pepper virus disease. After the pepper seedlings are harmed by aphids, the growth is slow, and the growth is stagnant in severe cases. After the leaves are damaged, the leaves are curled and deformed, and the sucking spots form twilight spots. In addition, viral diseases are easy to occur in high temperature and dry weather, so attention should be paid to eliminating aphids in time.
Control method: 40% omethoate EC 1500 times solution can be used, mixed with 10% imidacloprid wettable powder 2000-3000 times liquid, or mixed with 50% sputum mist, anti-converse WP 2000-3000 times solution, Or add 2.5% methacrylate emulsion 2000-3000 times liquid and so on. Organic cultivation, biological control can be used urine washing agent (ie 500 grams of urea, 150 grams of washing powder, 50 kg of water) and other methods, to see the aphids spray, completely cure. Capsicum virus disease, also known as "flower leaf disease" or "lobular disease", the diseased plants are dwarfed, the internodes are shortened, and the leaves produce yellow vein-like mosaic leaves and yellow-brown lesions. The branches sometimes have clumps, branches and stems. The epidermis turns brown, causing early defoliation, falling flowers, falling fruit, severe death, diseased fruit, deformity, yellow ring and yellow-green spots on the surface. Viral disease is an important disease of pepper, which seriously affects the yield and commercial value of pepper.
Control methods: (1) Eliminate aphids to control viral diseases, aphids are the main vector of viral diseases.
(2) Soaking seeds. Seeds were soaked with 0.1% potassium permanganate or trisodium phosphate for 10 to 30 minutes before sowing and then germinated for sowing.
(3) Agricultural control. Strengthen field management, diligently cultivate, promote root development, avoid lack of water and water shortage, and enhance plant disease resistance. It can also be mixed with 0.1%-0.3% potassium dihydrogen phosphate by marine bio-organic fertilizer “Garden Philippine” mixed “Foliage” Carry out the top dressing.
(4) Chemical control. The first is to spray 0.1% zinc sulphate solution on the surface of the pepper. Spraying once every ten days can promote early flowering, increase the rate of fruit set, and have the effect of preventing disease and increasing production.
The second is to spray 1:1:200 times Bordeaux mixture or 0.1% potassium permanganate solution every seven days to control the occurrence of the disease.
(5) Comprehensive prevention and treatment. In the early stage of the disease, the pepper virus inhibitor virus A and the like are mixed with the pollution-free plant promoter Green Wind 95 or the plant activator, and the organic bio-fertilizer phenanthrene or potassium dihydrogen phosphate is used to prevent viral diseases. It will be better to prevent it once in 10 days.
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