Symptoms of capsicum virus disease: There are two main types, one is mosaic necrosis, the diseased leaves show obvious green and light green or yellow-green mosaic symptoms, and some varieties have necrotic spots, causing defoliation, falling flowers, Fruit drop, the whole plant died in severe cases; the other is leaf malformation and cluster shape, the leaves are chlorotic during the onset, mottled, mosaic, leaf shrinkage, unevenness, small, narrow, linear, stem section The time is shortened, sometimes the leaves are clustered, the plants are dwarfed, and the fruit realizes the dark green and light green interdigitated spots, the fruit is small, deformed, easy to fall, fruit, and fallen leaves.
Prevention and treatment method:
1. Select resistant varieties, strictly disinfect the seeds, implement rotation, do a good job in field management, and prevent and control aphids, which can significantly reduce the occurrence of viral diseases. Seed disinfection can be carried out by dry heat method and liquid soaking method. The dry heat method is to dry the seeds sufficiently to reduce the water content to below 8%, and then to be treated at 72 ° C for 72 hours to kill the virus. The drug disinfection method is generally carried out with 10% aqueous solution of trisodium phosphate, soaked for 20-30 minutes, and rinsed out.
2, chemical control, 2000 times Tianda Yufeng + 600 times Tianda-2116 or 83 anti-agent 100 times liquid spray before and after planting, or AV-2 virus passivation 500 times liquid every 10-15 days Once, even spray 3-5 times; can also be used 1:4:600 copper soap every 10-15 days, even spray 3-4 times, can basically inhibit the occurrence and spread of viral diseases.
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